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Sengupta S, Tubio CR, Pinto RS, Barbosa J, Silva MM, Gonçalves R, Kundu M, Lanceros-Mendez S, Costa CM. Ternary composites of poly(vinylidene fluoride-co-hexafluoropropylene) with silver nanowires and titanium dioxide nanoparticles as separator membranes for lithium-ion batteries. J Colloid Interface Sci 2024; 668:25-36. [PMID: 38669993 DOI: 10.1016/j.jcis.2024.04.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/12/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024]
Abstract
In the realm of polymer composites, there is growing interest in the use of more than one filler for achieving multifunctional properties. In this work, a composite separator membrane has been developed for lithium-ion battery application, by incorporating conductive silver nanowires (AgNWs) and titanium dioxide (TiO2) nanoparticles into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer matrix. The composite membranes were manufactured by solvent casting and thermally induced phase separation, with total filler content varying up to 10 wt%. The ternary composites composites present improved mechanical characteristics, ionic conductivity and lithium transfer number compared to the neat polymer matrix. On the other hand, the filler type and content within the composite has little bearing on the morphology, polymer phase, or thermal stability. Once applied as a separator in lithium-ion batteries, the highest discharge capacity value was obtained for the 5 wt% AgNWs/5 wt% TiO2/PVDF-HFP membrane at different C-rates, benefiting from the synergetic effect from both fillers. This work demonstrates that higher battery performance can be achieved for next-generation lithium-ion batteries by using separator membranes based on ternary composites.
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Affiliation(s)
- S Sengupta
- Electrochemial Energy Storage Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Chennai, India
| | - C R Tubio
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - R S Pinto
- Centre of Chemistry, University of Minho, 4710-057 Braga, Portugal; Centre of Physics Universities of Minho and Porto, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - J Barbosa
- Centre of Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - M M Silva
- Centre of Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - R Gonçalves
- Centre of Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - M Kundu
- Electrochemial Energy Storage Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Chennai, India; International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga, 4715-330 Braga, Portugal.
| | - S Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; Centre of Physics Universities of Minho and Porto, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho, Braga 4710-057, Portugal; Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - C M Costa
- Centre of Physics Universities of Minho and Porto, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho, Braga 4710-057, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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Cruz-Montecinos C, Moena-León M, Durán-Ovalle A, Lizama-Jofré A, Soto V, Oyarzún A, Tapia C, Freitas SR, Pinto RS, Núñez-Cortés R, Daffunchio C. 30-sit-to-stand power is a better tool than isometric knee extensor strength to detect motor impairment in people with haemophilic arthropathy. Haemophilia 2024. [PMID: 38712982 DOI: 10.1111/hae.15021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 05/08/2024]
Abstract
INTRODUCTION Regular assessment of motor impairments is crucial in people with haemophilic arthropathy (PwHA). This study aimed to determine if there are differences in 30-seconds sit-to-stand (30-STS) power and maximal voluntary isometric contraction (MVIC) of the knee extensors between PwHA and healthy control group (CG). The secondary aims were to investigate the correlation between 30-STS power and MVIC of knee extensors with clinical characteristics and to assess their effectiveness in identifying motor impairment in PwHA. METHODS A cross-sectional study was conducted by collecting data from PwHA (n = 17) and a sedentary CG (n = 15). MVIC (torque) and 30-STS power were normalised to body mass. Correlation analysis and simple linear regression adjusted for age were used to assess the association between tests and clinical variables. Using z-scores derived from the mean and standard deviation of the CG, we compared the MVIC and the 30-STS power in PwHA. RESULTS PwHA showed lower MVIC and 30-STS power compared to CG (p < .001; large effect size d > .8). Lower 30-STS power was associated with greater joint impairment and greater fear of movement, whereas MVIC showed no association with clinical variables. 30-STS power showed a lower z-score compared to MVIC (p < .001). In addition, 30-STS power detected 47% of PwHA with motor impairment compared to 0% for MVIC (p = .002). CONCLUSIONS Our results suggest that 30-STS power may be more effective than knee extensors MVIC in detecting motor impairment in PwHA. Consequently, lower limb skeletal muscle power, rather than maximum knee extensor strength, appears to be more affected in PwHA.
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Affiliation(s)
- Carlos Cruz-Montecinos
- Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
- Research, Innovation, and Development Section in Kinesiology, Kinesiology Unit, San José Hospital, Santiago, Chile
| | - María Moena-León
- School of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Antonio Durán-Ovalle
- School of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Aracelli Lizama-Jofré
- School of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Verónica Soto
- Haemophilia Unit, Roberto del Río Hospital, Santiago, Chile
| | - Andrés Oyarzún
- Orthopaedic Surgery Unit, Hospital San Jose, Santiago, Chile, San José Hospital, Santiago, Chile
| | - Claudio Tapia
- Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Sandro R Freitas
- Neuromuscular Research Lab, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Lisboa, Portugal
| | - Ronei S Pinto
- Strength Training Research Group (GPTF), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Rodrigo Núñez-Cortés
- Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Carla Daffunchio
- Department of Traumatology, Juan A. Fernàndez Hospital, CABA, Buenos Aires, Argentina
- Haemophilia Foundation, CABA, Buenos Aires, Argentina
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Freitas SR, Cruz-Montecinos C, Ratel S, Pinto RS. Powerpenia Should be Considered a Biomarker of Healthy Aging. Sports Med Open 2024; 10:27. [PMID: 38523229 PMCID: PMC10961295 DOI: 10.1186/s40798-024-00689-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/22/2024] [Indexed: 03/26/2024]
Abstract
To identify biomarkers that precede the decline of human function and independence during the lifespan, two important concepts have been introduced in recent decades: sarcopenia and dynapenia. While the former is originally focused on skeletal muscle loss, the latter is on maximal strength loss. Although the dynapenia concept implies the inclusion of skeletal muscle power, in practical terms, this has not been specifically addressed. For instance, only 2 out of 220 studies published between 2008 and 2023 have directly measured muscle power to classify individuals with dynapenia. As previous studies have shown a greater relevance of skeletal muscle power in healthy aging, we hereby propose the introduction of the term "powerpenia" to specifically reflect the loss of skeletal muscle power along lifespan, but also with disease and/or physical inactivity. Together with sarcopenia and dynapenia, we contend that powerpenia should be considered a biomarker of healthy aging.
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Affiliation(s)
- Sandro R Freitas
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Portugal.
| | - Carlos Cruz-Montecinos
- Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
- Section of Research, Innovation and Development in Kinesiology, Kinesiology Unit, San José Hospital, Santiago, Chile
| | - Sébastien Ratel
- AME2P, Clermont-Auvergne University, Clermont-Ferrand, 3533, EA, France
| | - Ronei S Pinto
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Ruas CV, Ratel S, Nosaka K, Castellano G, Pinto RS. Resistance training effects on pubertal children with a risk of developing pediatric dynapenia. Eur J Appl Physiol 2024:10.1007/s00421-024-05436-z. [PMID: 38421430 DOI: 10.1007/s00421-024-05436-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 02/04/2024] [Indexed: 03/02/2024]
Abstract
PURPOSE Many modern-day children are at risk of pediatric dynapenia (muscle weakness). We examined the effects of a 12-week resistance training (RT) program on neuromuscular function and body composition parameters in pubertal children with a risk of dynapenia. METHODS Twelve children (13.4 ± 0.9 y) with dynapenia performed a progressive RT program consisting of knee extension and flexion, bench press, abdominal crunch, back extension, lateral pull-down, elbow flexion, and upright row (1-2 sets of 10-15 repetitions/exercise) twice/week for 12 weeks. Outcome measures included one-repetition maximum (1-RM) strength, maximal voluntary isometric contraction (MVIC) torque, rate of torque development (RTD), electromyographic (EMG) activity, muscle thickness (MT), muscle quality (MQ) assessed by echo intensity (MQEI) of the knee extensors and specific tension of MVIC torque to thigh fat-free mass (MQST), and total and regional body and bone composition assessed by dual-energy X-ray absorptiometry. Changes in the measures before and after the 12-week RT and associations among the measures were analyzed by linear mixed models. RESULTS Significant (p < 0.05) increases in 1-RM (63.9 ± 4.5%), MVIC torque (16.3 ± 17.8%), MT (18.8 ± 5.5%) and MQ (MQEI: -25.9 ± 15.2%; MQST: 15.1 ± 18.8%;) were evident from pre- to post-training. Total fat-free mass (FFM) increased by 2.3 ± 3.2% from baseline (p = 0.01), but no changes (p > 0.05) in the other measures were observed. Significant (p < 0.05) associations between the changes in 1-RM and/or MVIC torque and the changes in quadriceps MT, MQEI, MQST and total body FFM were evident. CONCLUSIONS The 12-week RT was effective for improving neuromuscular and body composition parameters, and thereby reversed the risk of pediatric dynapenia.
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Affiliation(s)
- Cassio V Ruas
- School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia.
- Brazilian Institute of Neuroscience and Neurotechnology-Institute of Physics Gleb Wataghin, Universidade Estadual de Campinas, R. Sérgio Buarque de Holanda, 777, Campinas, São Paulo, 13083-859, Brazil.
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal Rio Grande do Sul, Porto Alegre, Brazil.
| | - Sébastien Ratel
- Université Clermont Auvergne, AME2P, 63000, Clermont-Ferrand, France
| | - Kazunori Nosaka
- School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
| | - Gabriela Castellano
- Brazilian Institute of Neuroscience and Neurotechnology-Institute of Physics Gleb Wataghin, Universidade Estadual de Campinas, R. Sérgio Buarque de Holanda, 777, Campinas, São Paulo, 13083-859, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal Rio Grande do Sul, Porto Alegre, Brazil
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Blazevich AJ, Mesquita RNO, Pinto RS, Pulverenti T, Ratel S. Reduction and recovery of self-sustained muscle activity after fatiguing plantar flexor contractions. Eur J Appl Physiol 2024:10.1007/s00421-023-05403-0. [PMID: 38340155 DOI: 10.1007/s00421-023-05403-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 12/11/2023] [Indexed: 02/12/2024]
Abstract
PURPOSE Persistent inward calcium and sodium currents (PICs) are crucial for initiation and maintenance of motoneuron firing, and thus muscular force. However, there is a lack of data describing the effects of fatiguing exercise on PIC activity in humans. We simultaneously applied tendon vibration and neuromuscular electrical stimulation (VibStim) before and after fatiguing exercise. VibStim induces self-sustained muscle activity that is proposed to result from PIC activation. METHODS Twelve men performed 5-s maximal isometric plantar flexor contractions (MVC) with 5-s rests until joint torque was reduced to 70%MVC. VibStim trials consisted of five 2-s trains of neuromuscular electrical stimulation (20 Hz, evoking 10% MVC) of triceps surae with simultaneous Achilles tendon vibration (115 Hz) without voluntary muscle activation. VibStim was applied before (PRE), immediately (POST), 5-min (POST-5), and 10-min (POST-10) after exercise completion. RESULTS Sustained torque (Tsust) and soleus electromyogram amplitudes (EMG) measured 3 s after VibStim were reduced (Tsust: -59.0%, p < 0.001; soleus EMG: -38.4%, p < 0.001) but largely recovered by POST-5, and changes in MVC and Tsust were correlated across the four time points (r = 0.69; p < 0.001). After normalisation to values obtained at the end of the vibration phase to control for changes in fibre-specific force and EMG signal characteristics, decreases in Tsust (-42.9%) and soleus EMG (-22.6%) remained significant and were each correlated with loss and recovery of MVC (r = 0.41 and 0.46, respectively). CONCLUSION The parallel changes observed in evoked self-sustained muscle activity and force generation capacity provide motivation for future examinations on the potential influence of fatigue-induced PIC changes on motoneuron output.
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Affiliation(s)
- Anthony J Blazevich
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Joondalup, Australia.
| | - Ricardo N O Mesquita
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Joondalup, Australia
- Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
- Neuroscience Research Australia, Sydney, Australia
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Timothy Pulverenti
- Department of Physical Therapy, College of Staten Island, Staten Island, NY, USA
| | - Sébastien Ratel
- UFR STAPS - Laboratoire AME2P, Université Clermont Auvergne, Campus Universitaire des Cézeaux, 3 Rue de la Chebarde, 63170, Clermont-Ferrand, France
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Radaelli R, Trajano GS, Freitas SR, Izquierdo M, Cadore EL, Pinto RS. Response to Comment on: "Power Training Prescription in Older Individuals: Is It Safe and Effective to Promote Neuromuscular Functional Improvements?". Sports Med 2023; 53:2283-2284. [PMID: 37707695 DOI: 10.1007/s40279-023-01917-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/18/2023] [Indexed: 09/15/2023]
Affiliation(s)
- Régis Radaelli
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz-Cooperativa de Ensino Superior, Monte da Caparica, Portugal.
- CIPER, Faculty of Human Kinetics, University of Lisboa, Cruz Quebrada Dafundo, Lisbon, Portugal.
| | - Gabriel S Trajano
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Sandro R Freitas
- Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada Dafundo, Lisbon, Portugal
| | - Mikel Izquierdo
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain
- CIBER of Frailty and Healthy Ageing (CIBERFES) Instituto de Salud Carlos III Madrid, Madrid, Spain
| | - Eduardo L Cadore
- Exercise Research Laboratory, Physical Education, Physiotherapy and Dance School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory, Physical Education, Physiotherapy and Dance School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Bandeira-Guimarães M, Blanco-Rambo E, Vieira AF, Sáez de Asteasu ML, Pinto RS, Izquierdo M, Cadore EL. Chronic Effects of Different Intensities of Power Training on Neuromuscular Parameters in Older People: A Systematic Review with Meta-analysis. Sports Med Open 2023; 9:98. [PMID: 37874417 PMCID: PMC10597949 DOI: 10.1186/s40798-023-00646-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 10/09/2023] [Indexed: 10/25/2023]
Abstract
BACKGROUND Power training (PT) has been shown to be an effective method for improving muscle function, including maximal strength, measured by one-repetition maximum (1RM), and power output in older adults. However, it is not clear how PT intensity, expressed as a percentage of 1RM, affects the magnitude of these changes. The aim of this systematic review (International prospective register of systematic reviews-PROSPERO-registration: CRD42022369874) was to summarize the evidence from randomized clinical trials (RCT) assessing the effects of low-intensity (≤ 49% of 1RM) and moderate-intensity (50-69% of 1RM) versus high-intensity (≥ 70% of 1RM) PT on maximal power output and maximal strength in older adults. METHODS We included RCTs that examined the effects of different intensities of power training on maximum strength and power output in older people. The search was performed using PubMed, LILACS, Embase, and Scopus. Methodological quality was assessed using the preferred reporting items for systematic reviews and meta-analyses (PRISMA 2020 statement checklist), and the quality of evidence was determined using the PEDro scale. Data were analyzed using standardized mean differences (SMD) with a 95% confidence interval (CI), and random effects models were used for calculations. A significance level of p ≤ 0.05 was accepted. RESULTS Three RCTs assessing 179 participants, all of high methodological quality, were included. There were no significant differences between different PT intensities in terms of power output gains for leg press [SMD = 0.130 (95% CI - 0.19, 0.45), p = 0.425] and knee extension exercises [SMD: 0.016 (95% CI - 0.362, 0.395), p = 0.932], as well as leg press 1RM increases [SMD: 0.296 (95% CI - 0.03, 0.62); p = 0.072]. However, high-intensity PT (70-80% of 1RM) was significantly more effective than low-intensity PT in increasing 1RM for knee extension exercise [SMD: 0.523 (95% CI 0.14, 1.91), p = 0.008]. CONCLUSIONS PT performed at low-to-moderate intensities induces similar power gains compared to high-intensity PT (70-80% of 1RM) in older adults. Nonetheless, the influence of PT intensity on lower-limb strength gains seems to be dependent on the assessed exercise. Cautious interpretation is warranted considering the inclusion of only three studies.
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Affiliation(s)
- Marcelo Bandeira-Guimarães
- Exercise Research Laboratory (LAPEX), School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, CEP 90690-200, Brazil
| | - Eduarda Blanco-Rambo
- Exercise Research Laboratory (LAPEX), School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, CEP 90690-200, Brazil
| | - Alexandra Ferreira Vieira
- Exercise Research Laboratory (LAPEX), School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, CEP 90690-200, Brazil
| | - Mikel L Sáez de Asteasu
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), IDISNA, Pamplona, Spain
| | - Ronei S Pinto
- Exercise Research Laboratory (LAPEX), School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, CEP 90690-200, Brazil
| | - Mikel Izquierdo
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), IDISNA, Pamplona, Spain
- CIBER of Frailty and Healthy Aging (CIBERFES), Institute of Health Carlos III, Madrid, Spain
| | - Eduardo Lusa Cadore
- Exercise Research Laboratory (LAPEX), School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, CEP 90690-200, Brazil.
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Loturco I, Grazioli R, Veeck F, Nakamura FY, Inácio M, Schons P, Preissler A, Pinto RS, Pereira LA, McGuigan MR, Cadore EL. Effects of a Short-Term Detraining Period on the Strength Deficit and Functional Performance of Highly Trained Soccer Players. J Strength Cond Res 2023; 37:2058-2063. [PMID: 37015015 DOI: 10.1519/jsc.0000000000004496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
ABSTRACT Loturco, I, Grazioli, R, Veeck, F, Nakamura, FY, Inácio, M, Schons, P, Preissler, A, Pinto, RS, Pereira, LA, McGuigan, MR, and Cadore, EL. Effects of a short-term detraining period on the strength deficit and functional performance of highly trained soccer players. J Strength Cond Res 37(10): 2058-2063, 2023-The aim of this study was to examine the effects of a 4-week detraining period on the neuromuscular performance of highly trained soccer players. Pre and post detraining, 18 adult soccer players (age: 27 ± 4.9 years; height: 180.2 ± 7.1 cm; body mass [BM]: 78.9 ± 7.6 kg) performed vertical jumps, 20-m linear sprints, curve sprint and change of direction speed tests, and a progressive loading test in the half-squat exercise with loads corresponding to 50, 100, and 150% of the players' BM to assess the peak-force (PF), mean power (MP), and strength-deficit (SDef). Pre and post differences in the variables of interest were analyzed using paired t -tests and effect sizes (ES). No significant changes were detected for vertical jumping height and sprint times. Higher PF at 50 and 100% BM and lower SDef were shown when comparing pre- and postassessments (ES = 0.66, 0.68, 0.55; p = 0.018, 0.016, and 0.046, respectively). The MP at 50 and 100% BM increased significantly after the detraining phase (ES = 0.56, 0.82; p = 0.049 and 0.007, respectively). The results indicate that these athletes were able to maintain and achieve satisfactory levels of performance after a short period of training cessation. Interestingly, some strength- and power-derived parameters improved significantly after short-term detraining, which may have important implications for training programs aimed at maximizing speed and power performance. It is recommended that coaches test their players not only at the beginning but also at the end of the season, to better evaluate variations in performance and thus create more efficient and tailored training strategies.
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Affiliation(s)
- Irineu Loturco
- NAR-Nucleus of High Performance in Sport, Sao Paulo, Brazil
- Department of Human Movement Sciences, Federal University of São Paulo, São Paulo, Brazil
- University of South Wales, Wales, United Kingdom
| | - Rafael Grazioli
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Filipe Veeck
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fabio Y Nakamura
- Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University Institute of Maia (ISMAI), Maia, Portugal
- Associate Graduate Program in Physical Education, Universidade de Pernambuco (UPE)/Universidade Federal da Paraíba (UFPB), João Pessoa, Brazil
| | - Martinho Inácio
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Pedro Schons
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Artur Preissler
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Lucas A Pereira
- NAR-Nucleus of High Performance in Sport, Sao Paulo, Brazil
- Department of Human Movement Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Michael R McGuigan
- Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; and
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Eduardo L Cadore
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Brusco CM, Pinto RS, Blazevich AJ. Biceps Femoris Fascicle Behavior during Submaximal and Maximal Slow Speed Contractions. Med Sci Sports Exerc 2023; 55:1857-1865. [PMID: 37202880 DOI: 10.1249/mss.0000000000003217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
PURPOSE The present study compared the effects of contraction intensity (submaximal vs maximal) and mode (concentric vs eccentric) on biceps femoris long head (BFlh) fascicle lengthening, rotation, and architectural gear ratio at long and short muscle lengths. METHODS Data were captured from 18 healthy adults (10 men and 8 women) without history of right hamstring strain injury. BFlh fascicle length ( Lf ), fascicle angle (FA), and muscle thickness (MT) were assessed in real time using two serially aligned ultrasound devices while submaximal and maximal concentric and eccentric isokinetic knee flexions were performed at 30°·s -1 . Ultrasound videos were exported and edited to create a single, synchronized video, and three fascicles were analyzed through the range of motion (10° to 80°). Changes (Δ) in Lf , FA, MT, and muscle gear at long (60° to 80° knee angle; 0° = full knee extension) and short (10° to 30°) muscle lengths and across the full knee flexion range were measured and compared. RESULTS Greater Δ Lf was observed at long muscle length ( P < 0.001) during both submaximal and maximal eccentric and concentric contractions. When the full length range was analyzed, a slightly greater ΔMT was observed in concentric contractions ( P = 0.03). No significant differences between submaximal and maximal contractions were observed for Δ Lf , ΔFA, or ΔMT. No changes were detected in the calculated muscle gear between muscle lengths, intensities, or conditions ( P > 0.05). CONCLUSIONS Although gear ratio ranged ~1.0 to 1.1 under most conditions, the increased fascicle lengthening observed at long muscle lengths might influence acute myofiber damage risk but also speculatively play a role in chronic hypertrophic responses to training.
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Affiliation(s)
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, BRAZIL
| | - Anthony J Blazevich
- Centre for Human Performance, School of Exercise and Health Sciences, Edith Cowan University, Joondalup, AUSTRALIA
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10
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Grazioli R, Inácio M, Lopez P, Freitas SR, Cunha GDS, Machado CLF, Veeck F, Baroni BM, Cadore EL, Pinto RS. Effects of eccentric-emphasized leg curl intervention on muscle strength imbalance markers in professional soccer players during pre-season. J Bodyw Mov Ther 2023; 35:28-32. [PMID: 37330782 DOI: 10.1016/j.jbmt.2023.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 06/28/2022] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND The effects of strength training on muscle strength imbalance are unclear in professional soccer players. As a result, this study examined the effects of an 8-week strength training program comprising eccentric-emphasized prone leg curl adjusted according to the individual strength imbalance status. METHODS Ten professional soccer players (26.0 ± 3.6 yrs) participated in the study. Players who had a ≥ 10% contralateral imbalance in knee flexors eccentric peak torque (n = 6) performed two additional repetitions per set in the low-strength limb (high-volume, HV) compared to the high-strength limb (low-volume, LV). Isokinetic concentric knee extension and concentric and eccentric knee flexion peak torque (PT) and derived contralateral imbalances and conventional and functional hamstring-to-quadriceps ratios (H:Q) were assessed at baseline and after 8 weeks. Differences at baseline were assessed using paired-sample T-tests, and a two-way (limb x time) repeated measures analysis of covariance (ANCOVA) for changes over time. RESULTS A significant improvement in the eccentric knee flexion PT was observed in both limbs after 8 weeks (P < 0.05), with greater effects observed in the HV limb (25.0 N m, 95% CI: 15.1-34.9 N m). Significant decreases were also observed in the contralateral imbalances from concentric knee extension and flexion and eccentric knee flexion PT (P < 0.05). Differences were not observed in concentric knee extension and flexion PT (P > 0.05). CONCLUSIONS A short-term eccentric-emphasized leg curl intervention adjusted by the initial knee flexors eccentric strength was an efficient method to improve knee flexors strength imbalance in professional soccer players.
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Affiliation(s)
- Rafael Grazioli
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil.
| | - Martinho Inácio
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Pedro Lopez
- Exercise Medicine Research Institute, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia; School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Sandro R Freitas
- Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, Cruz Quebrada, Dafundo, Lisboa, Portugal
| | - Giovani Dos Santos Cunha
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Carlos L F Machado
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Filipe Veeck
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | | | - Eduardo L Cadore
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
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11
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Henkin JS, Pinto RS, Machado CLF, Wilhelm EN. Chronic effect of resistance training on blood pressure in older adults with prehypertension and hypertension: A systematic review and meta-analysis. Exp Gerontol 2023; 177:112193. [PMID: 37121334 DOI: 10.1016/j.exger.2023.112193] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/02/2023]
Abstract
The chronic antihypertensive effect of resistance training (RT) has been widely recognized in mixed-aged populations. However, the specific effect of RT on blood pressure (BP) in older individuals (≥60 years) remains unknown. Therefore, this meta-analysis of randomized controlled trials explored the chronic effects of dynamic RT alone on BP in older people. The study followed the PRISMA statement, and the search was performed using MeSH terms "strength training", "blood pressure" and "aged" on MEDLINE (PubMed), SCOPUS, and Web of Science databases. From 1783 potential articles, 24 studies met all inclusion criteria resulting in 835 participants randomized into 26 RT interventions (n = 430) and 24 control groups (n = 405). Overall, BP reduction favoring RT was observed both in SBP (-6.88 [-10.02, -3.73] mmHg) and DBP (-3.37 [-4.71, -2.22] mmHg). Subgroup analysis revealed BP decreases in both participants with hypertension (SBP: -10.42 [-15.67, -5.17]; DBP: -3.99 [-5.76,-2.22] mmHg), and prehypertension (SBP: -4.87 [-7.76, -1.98]; DBP: -2.77 [-4.88, -0.66] mmHg). Improvement in BP was found in studies using traditional RT (free weights and machines) (SBP: -7.04 [-11.04, -3.05]; DBP: -2.60 [-3.72, -1.47] mmHg) and elastic band interventions (SBP: -2.79 [-3.72, -1.86]; DBP:-1.68 [-3.18, -0.18] mmHg). RT performed at moderate intensity (60-80 % 1RM) reduced SBP (-6.98, [-11.93, -2.03]mmHg) and DBP (-3.64 [-5.11, -2.18] mmHg). In conclusion, RT can reduce BP in older people at prehypertensive and hypertensive stage, with traditional RT performed with moderate loads leading to an effect estimate of approximately -7 mmHg for SBP and -4 mmHg for DBP.
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Affiliation(s)
- João S Henkin
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Carlos L F Machado
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Eurico N Wilhelm
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK.
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12
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Grazioli R, Loturco I, Lopez P, Setuain I, Goulart J, Veeck F, Inácio M, Izquierdo M, Pinto RS, Cadore EL. Effects of Moderate-to-Heavy Sled Training Using Different Magnitudes of Velocity Loss in Professional Soccer Players. J Strength Cond Res 2023; 37:629-635. [PMID: 33009351 DOI: 10.1519/jsc.0000000000003813] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Grazioli, R, Loturco, I, Lopez, P, Setuain, I, Goulart, J, Veeck, F, Inácio, M, Izquierdo, M, Pinto, RS, and Cadore, EL. Effects of moderate-to-heavy sled training using different magnitudes of velocity loss in professional soccer players. J Strength Cond Res 37(3): 629-635, 2023-This study investigated the effects of a 11-week moderate-to-heavy sled training intervention with different magnitudes of velocity loss on sprint and jump performance, mechanical muscle function, and body composition in professional soccer players. Seventeen players (age 25.8 ± 4.3 years; height 180.0 ± 8.6 cm; mass 77.7 ± 9.7 kg) were randomly allocated into 2 groups, based on different magnitudes of velocity loss: 10% of velocity decrease (G10, n = 8) and 20% of velocity decrease (G20, n = 9). The velocity-based sled training consisted of 20-m resisted sprints with a progressive loading increase from 45 to 65% of body-mass throughout the intervention. Pre-intervention and postintervention sprint and jump performance, hamstring and quadriceps peak torque and isometric rate of torque development, and lower-limb lean mass measured by dual X-ray absorptiometry were assessed and compared. Two-way repeated measures analysis of variance revealed a significant time-effect for decreases in 10- and 20-m sprint times ( p = 0.018 and p = 0.033, respectively), but without a time-group interaction. The G10 showed greater beneficial effects than G20 for both 10-m (-5.5 ± 3.3%, magnitude-based inference [MBI]: possibly vs. -1.7 ± 5.9%, MBI: possibly trivial) and 20-m (-2.5 ± 2.1%, MBI: possibly vs. -1.4 ± 3.7%, MBI: likely trivial) sprint times. Moreover, there was a significant time effect for countermovement jump height and quadriceps isometric peak torque, which decreased significantly after training ( p = 0.019 and p = 0.010, respectively), with no within-group effect of time vs. group interaction for these respective outcomes. The novel velocity-based sled model proposed here, especially under lower magnitudes of velocity loss, was able to significantly improve linear sprint performance in professional soccer players.
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Affiliation(s)
- Rafael Grazioli
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Irineu Loturco
- NAR-Nucleus of High Performance in Sport, São Paulo, Brazil.,Department of Human Movement Sciences, Federal University of São Paulo, São Paulo, Brazil.,University of South Wales, Pontypridd, Wales, United Kingdom
| | - Pedro Lopez
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.,Exercise Medicine Research Institute, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia ; and
| | - Igor Setuain
- Department of Health Sciences, Public University of Navarra, Tudela, Navarra, Spain
| | - Jean Goulart
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Filipe Veeck
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Martinho Inácio
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Mikel Izquierdo
- Department of Health Sciences, Public University of Navarra, Tudela, Navarra, Spain
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo L Cadore
- Exercise Research Laboratory, School of Physical Education, Physiotherapy, and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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13
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Henkin JS, Botton CE, Simon MS, Rocha GG, Silveira CB, Gehrke RS, Freitas GB, Trajano GS, Pinto RS, Pinto SS. Telehealth multicomponent exercise and health education in breast cancer patients undergoing primary treatment: rationale and methodological protocol for a randomized clinical trial (ABRACE: Telehealth). Trials 2023; 24:42. [PMID: 36658611 PMCID: PMC9851110 DOI: 10.1186/s13063-022-07015-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/14/2022] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Current guidelines emphasize cancer patients should increase their physical activity levels, encouraging physical exercise practice as a complementary therapy to mitigate adverse effects during treatment. Telehealth can be a feasible method to improve adherence and interventional support for breast cancer patients, of which most do not meet sufficient physical activity levels after diagnosis. The Adaptations to Breast Cancer and Exercise Using Telehealth (ABRACE: Telehealth) study aims to investigate the effects of a 12-week telehealth multicomponent training program plus a health education program (MTHE), compared to a health education program alone (HE), on physical and psychological outcomes in breast cancer patients undergoing treatment. METHODS This study is a randomized controlled trial. Women undergoing primary treatment (during or after chemotherapy) for breast cancer (stages I-III) will be randomly assigned to MTHE (twice a week) or HE (once a week). MTHE components are mobility, aerobic, balance, resistance, and flexibility home-based exercises, supervised by video call. The primary study outcome is cancer-related fatigue. The secondary outcomes are quality of life, symptoms of depression and anxiety, physical activity level, cancer-related cognitive impairment, and functional capacity. Other outcomes are adherence to interventions and a follow-up questionnaire evaluating the individual perception in motivation, lifestyle changes, and main barriers to participation. All outcomes will be remotely assessed before and after intervention. Our analysis will follow the intention-to-treat approach and per-protocol criteria, with additional sub-group analysis. DISCUSSION To our knowledge, this is the first randomized clinical trial in breast cancer patients using a face-to-face videoconference strategy to supervise physical exercise. Our hypothesis is of superiority for the effects of MTHE on primary and secondary outcomes compared to the effects of only the health education intervention. TRIAL REGISTRATION Adaptations to Breast Cancer and Exercise Using Telehealth (ABRACE: Telehealth), NCT04641377. Registered on 23 November 2021, https://clinicaltrials.gov/ct2/show/NCT04641377.
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Affiliation(s)
- João S. Henkin
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Cíntia E. Botton
- grid.414449.80000 0001 0125 3761Exercise Pathophysiology Research Laboratory, Hospital de Clínicas de Porto Alegre, Clinical Research Center, Porto Alegre, Rio Grande do Sul Brazil
| | - Mariana S. Simon
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Guilherme G. Rocha
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Caroline B. Silveira
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Ricardo S. Gehrke
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Gabriella B. Freitas
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Gabriel S. Trajano
- grid.1024.70000000089150953School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Australia
| | - Ronei S. Pinto
- grid.8532.c0000 0001 2200 7498Exercise Research Laboratory (LAPEX), Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Felizardo, 750 – Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul CEP: 90690-200 Brazil
| | - Stephanie S. Pinto
- grid.411221.50000 0001 2134 6519Neuromuscular Assessment Laboratory, Physical Education School, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul Brazil
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Brusco CM, Pinto RS, Blazevich AJ. Reliability and Comparison of Sonographic Methods for In Vivo Measurement of Human Biceps Femoris Long-Head Architecture. Med Sci Sports Exerc 2022; 54:2216-2226. [PMID: 35941523 DOI: 10.1249/mss.0000000000003015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Biceps femoris long-head fascicle length ( Lf ), fascicle angle (FA), and muscle thickness (MT) estimates obtained across 2 d from extended field-of-view (EFOV) sonographic images were compared with those measured from a collage of single ultrasound images (to visualize entire fascicles) as well as a range of geometric equations and extrapolation methods used on single images. Both test validity and intraday reliability were determined. METHODS Twenty healthy adults (10 men and 10 women) were tested on two occasions (day 1 and day 2), 7 d apart at the same time of day for test-retest measurements. Ultrasound imaging was performed using EFOV and static image acquisition sequences; in the latter, four single images were acquired in-series along the muscle. From these images, Lf was assessed using seven methods: EFOV, collage, manual linear extrapolation, and four different trigonometric equations (termed equations A, B, C, and D), and FA and MT were measured in EFOV, collage, and single images. RESULTS Lf , FA, and MT measured on days 1 and 2 were not different ( P > 0.05) for any method, reliabilities were very high (intraclass correlation coefficient, 0.91-0.98), and correlations were strong (≥0.84). Significant correlations ( P < 0.05; r = 0.67-0.98) were found between EFOV and the other measurement techniques for Lf , FA, and MT. The collage method had the highest reliability for Lf , and highest rank order and correlation with EFOV. CONCLUSIONS Although the six different techniques used to estimate Lf provided values similar to EFOV, higher between-subject measurement variability was observed with trigonometric equations, and the collage method described herein provided the most accurate and reliable results and is therefore recommended for biceps femoris long-head architectural analysis when EFOV is not available.
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Affiliation(s)
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, BRAZIL
| | - Anthony J Blazevich
- Centre for Exercise and Sports Science Research, School of Exercise and Health Sciences, Edith Cowan University, Joondalup, AUSTRALIA
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Formighieri C, Müller DC, Sáez de Asteasu ML, Mello A, Teodoro JL, Boeno F, Grazioli R, Cunha GDS, Pietta-Dias C, Izquierdo M, Pinto RS, Cadore EL. Interindividual variability of adaptations following either traditional strength or power training combined to endurance training in older men: A secondary analysis of a randomized clinical trial. Exp Gerontol 2022; 169:111984. [PMID: 36270544 DOI: 10.1016/j.exger.2022.111984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 09/08/2022] [Accepted: 10/13/2022] [Indexed: 12/15/2022]
Abstract
This study aimed to investigate the interindividual responses following two different concurrent training (CT) regimens in neuromuscular, cardiorespiratory and functional outcomes of older men. Thirty-five older men (65.8 ± 3.9 years) were randomly allocated into one of two CT groups: power training (PT) + high-intensity interval training (HIIT) (n = 17); or traditional strength training (TST) + HIIT (n = 18). Maximal dynamic strength (one-repetition maximum, 1RM), rate of force development at 100 milliseconds (RDF100), countermovement jump power (CMJ), quadriceps femoris muscle thickness (QF MT), functional tests (sit-to-stand, timed-up-and-go, and stair climbing), and peak oxygen consumption (VO2peak) were assessed pre-, post-8 and post-16 weeks of training. The Chi-squared test was used for assessing differences in the prevalence of responders (Rs), non-responders (NRs), and adverse responders (ARs). Similar prevalence of individual responses (Rs, NRs and ARs) between groups were observed after intervention in almost all outcomes: 1RM; power at CMJ; QF MT, and functional tests (P > 0.05). However, a significant difference in the distribution of Rs, NRs and ARs between groups was observed in the RFD100 after 16 weeks (p = 0.003), with PT + HIIT group presenting high prevalence of Rs than TST + HIIT (100 % vs. 50 %). The inclusion of explosive-type of contractions in a concurrent training regime induces greater responsiveness in the RFD100 in older men, while no differences compared to traditional strength training are observed in maximal strength, muscle size, VO2peak, and functional performance.
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Affiliation(s)
- Carolina Formighieri
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Diana C Müller
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Mikel L Sáez de Asteasu
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IDISNA, Pamplona, Navarra, Spain
| | - Alexandre Mello
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Juliana L Teodoro
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Francesco Boeno
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Rafael Grazioli
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Giovani Dos S Cunha
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Caroline Pietta-Dias
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Mikel Izquierdo
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IDISNA, Pamplona, Navarra, Spain; CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil
| | - Eduardo L Cadore
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Brazil.
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Grazioli R, Loturco I, Veeck F, Radaelli R, Teodoro JL, Garcia-tabar I, Inácio M, Pinto RS, Cadore EL. Relationship between neuromuscular profile and total volume of resisted sprint training in male professional soccer players. Sport Sci Health 2022. [DOI: 10.1007/s11332-022-00998-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Logeson ZS, MacLennan RJ, Abad GKB, Methven JM, Gradl MR, Pinto MD, Pinto RS, Stock MS. The impact of skeletal muscle disuse on distinct echo intensity bands: A retrospective analysis. PLoS One 2022; 17:e0262553. [PMID: 35015790 PMCID: PMC8752001 DOI: 10.1371/journal.pone.0262553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 12/28/2021] [Indexed: 11/18/2022] Open
Abstract
Echo intensity (EI) is a novel tool for assessing muscle quality. EI has traditionally been reported as the mean of the pixel histogram, with 0 and 255 arbitrary units (A.U.) representing excellent and poor muscle quality, respectively. Recent work conducted in youth and younger and older adults suggested that analyzing specific EI bands, rather than the mean, may provide unique insights into the effectiveness of exercise and rehabilitation interventions. As our previous work showed deterioration of muscle quality after knee joint immobilization, we sought to investigate whether the increase in EI following disuse was limited to specific EI bands. Thirteen females (age = 21 yrs) underwent two weeks of left knee immobilization and ambulated via crutches. B-mode ultrasonography was utilized to obtain images of the immobilized vastus lateralis. The percentage of the total number of pixels within bands of 0–50, 51–100, 101–150, 151–200, and 201–255 A.U. was examined before and after immobilization. We also sought to determine if further subdividing the histogram into 25 A.U. bands (i.e., 0–25, 26–50, etc.) would be a more sensitive methodological approach. Immobilization resulted in a decrease in the percentage of pixels within the 0–50 A.U. band (-3.11 ± 3.98%), but an increase in the 101–150 A.U. (2.94 ± 2.64%) and 151–200 A.U. (0.93 ± 1.42%) bands. Analyses of variance on the change scores indicated that these differences were large and significant (%EI0-50 vs. %EI101-150: p < .001, d = 1.243); %EI0-50 vs. %EI151-200: p = .043, d = 0.831). The effect size for the %EI51-100 versus %EI101-150 comparison was medium/large (d = 0.762), but not statistically significant (p = .085). Further analysis of the 25 A.U. bands indicated that the percentage of pixels within the 25–50 A.U. band decreased (-2.97 ± 3.64%), whereas the 101–125 (1.62 ± 1.47%) and 126–150 A.U. (1.18 ± 1.07%) bands increased. Comparison of the 50 A.U. and 25 A.U. band methods found that 25 A.U. bands offer little additional insight. Though studies are needed to ascertain the factors that may influence specific bands, changes in EI during muscle disuse are not homogeneous across the pixel histogram. We encourage investigators to think critically about the robustness of data obtained from EI histograms, rather than simply reporting the EImean value, in muscle quality research.
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Affiliation(s)
- Zachary S. Logeson
- Neuromuscular Plasticity Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida, United States of America
| | - Rob J. MacLennan
- Applied Neuromuscular Physiology Laboratory, Oklahoma State University, Stillwater, Oklahoma, United States of America
| | - Gerard-Kyle B. Abad
- Neuromuscular Plasticity Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida, United States of America
| | - Johnathon M. Methven
- Neuromuscular Plasticity Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida, United States of America
| | - Molly R. Gradl
- Neuromuscular Plasticity Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida, United States of America
| | - Matheus D. Pinto
- Centre for Exercise and Sport Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Ronei S. Pinto
- Exercise Research Laboratory, Physical Education, Physiotherapy and Dance School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Matt S. Stock
- Neuromuscular Plasticity Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida, United States of America
- * E-mail:
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Silva SRG, Azevedo PVM, Santos Júnior CJD, Costa JGD, Pavão JMSJ, Santos AFD, Ferreira-Júnior GC, Souza MA, Cavalcanti MGDS, Pereira MEO, Souza EC, Costa GA, Marinho CRM, Ilha AOG, Pinto RS, Matos-Rocha TJ. Environmental characteristics, nutritional and executive functions in children of 6 to 7 years. BRAZ J BIOL 2021; 83:e248778. [PMID: 34669798 DOI: 10.1590/1519-6984.248778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/29/2021] [Indexed: 11/21/2022] Open
Abstract
This study aimed to analyze the socio-environmental characteristics, executive and nutritional functions in children aged 6 to 7 years, from public schools in Alagoas, Brazil. A quantitative, cross-sectional and descriptive study was performed involving 64 children of the mentioned age group, from public schools located in Alagoas: Maceió, on the coast; Major Isidoro, in the hinterland and Palmeira dos Índios, in the country. Such analyzes were made through the application of neuropsychological tests and anthropometric assessment with children and food and socio-environmental surveys with their parents. As for the type of housing, 100% were made of masonry, with a bathroom present in 98.4%. All children reported with the habit of bathing in the river / lagoon, presented some pathology. There was no significant difference between cities in terms of the sociodemographic characteristics evaluated, with the same result occurring with the factors associated with the occurrence of diseases in children. The subtests of WISC-IV, were below the average in all municipalities, and the TAC and SCC were classified within the average. However, even though the ranking were divided between below average and average, it is possible to identify from the subtests of WISC-IV, that the general IQ showed a cognitive level below the average. There was also no significant difference in the anthropometric assessment (weight, height, BMI and IMCI) between the evaluated students. The average weight was 23.3 kg to 25 kg, the height between 1.23 m to 1.24 m, the BMI between 16.4 to 17; the IMCI from 2.8 to 3.0. Children were classified within the average. Regarding micronutrients (Ca, Fe, K, Mg and Na, and vitamins A, C, D, B1, B9 and B12) and calories, there was also no significant difference between the cities evaluated. The same occurred with macronutrients (proteins, carbohydrates and lipids). This study showed that in general there was no difference between the students of the three municipalities. Probably, even though they are all public schools and from different cities, children have similar social conditions.
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Affiliation(s)
- S R G Silva
- Centro Universitário CESMAC, Maceió, AL, Brasil
| | | | | | | | | | - A F Dos Santos
- Centro Universitário CESMAC, Maceió, AL, Brasil.,Universidade Estadual de Alagoas - UNEAL, Arapiraca, AL, Brasil
| | - G C Ferreira-Júnior
- Instituto Federal de Educação, Ciência e Tecnologia do Acre - IFAC, Xapuri, AC, Brasil
| | - M A Souza
- Centro Universitário CESMAC, Maceió, AL, Brasil
| | | | | | - E C Souza
- Centro Universitário CESMAC, Maceió, AL, Brasil
| | - G A Costa
- Centro Universitário CESMAC, Maceió, AL, Brasil
| | | | - A O G Ilha
- Universidade de São Paulo - USP, Faculdade de Medicina, Hospital das Clínicas - HCFMUSP, Laboratório de Lipides - LIM10, São Paulo, SP, Brasil
| | - R S Pinto
- Centro Universitário CESMAC, Maceió, AL, Brasil
| | - T J Matos-Rocha
- Centro Universitário CESMAC, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas - UNCISAL, Maceió, AL, Brasil
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Radaelli R, Brusco CM, Machado CLF, Martins D, Sakugawa RL, Diefenthaeler F, Pinto RS. Muscle function and muscle balance in lower limbs are not impaired in individuals with general joint hypermobility. Sport Sci Health 2021. [DOI: 10.1007/s11332-021-00824-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Pfeifer LO, Botton CE, Diefenthaeler F, Umpierre D, Pinto RS. Effects of a power training program in the functional capacity, on body balance and lower limb muscle strength of elderly with type 2 diabetes mellitus. J Sports Med Phys Fitness 2021; 61:1529-1537. [PMID: 33480514 DOI: 10.23736/s0022-4707.21.11880-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND The effects of interventions with muscle power training on balance and functionality in individuals with type 2 diabetes mellitus (T2DM) are still poorly investigated. We evaluated the efficacy of a twelve-week power training program in the functional capacity, balance and lower limb muscle power and strength of elderly with T2DM. METHODS Twenty-one subjects (14 women and seven men) were allocated into two groups. One of the groups (PTG) performed a power training program twice a week (N.=11; age 70.5±7.8 years old), and the other was an active control group (CG) that performed a weekly stretching session (N.=10; age 66±3.2 years old). Outcomes of interest were assessed at baseline and after 12 weeks, these included functional capacity, balance, muscle strength and power. RESULTS The PTG participants improved their dynamic balance (P=0.027) and decrease in the time to perform the gait speed test (P<0.001), evaluated by the short physical performance battery (SPPB). Also showed a statically significant change muscle power (P=0.034) and maximal dynamic knee extension strength (P=0.023), with increments of 24% and 34%, respectively, in comparison to the CG. Both groups showed significant changes in the performance of the five-times-sit-to-stand test (P<0.001) and the SPPB score (P=0.001). CONCLUSIONS The power training program was able to promote improvements in some functional parameters as on the body balance and functional capacity and muscle strength of the elderly with T2DM. The training method was effective and safe, with no adverse effects during sessions.
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Affiliation(s)
- Lucinéia O Pfeifer
- Exercise Pathophysiology Laboratory, Rio Grande do Sul Federal University, (Universidade Federal do Rio Grande do Sul, UFRGS), Porto Alegre, Brazil -
| | - Cíntia E Botton
- Exercise Pathophysiology Laboratory, Rio Grande do Sul Federal University, (Universidade Federal do Rio Grande do Sul, UFRGS), Porto Alegre, Brazil.,National Institute of Science and Technology for Health Technology Assessment (IATS), Porto Alegre, Brazil
| | | | - Daniel Umpierre
- Exercise Pathophysiology Laboratory, Rio Grande do Sul Federal University, (Universidade Federal do Rio Grande do Sul, UFRGS), Porto Alegre, Brazil.,National Institute of Science and Technology for Health Technology Assessment (IATS), Porto Alegre, Brazil
| | - Ronei S Pinto
- Exercise Research Laboratory (LAPEX), Rio Grande do Sul Federal University, (Universidade Federal do Rio Grande do Sul, UFRGS), Porto Alegre, Brazil
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21
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Grazioli R, Loturco I, Baroni BM, Oliveira GS, Saciura V, Vanoni E, Dias R, Veeck F, Pinto RS, Cadore EL. Coronavirus Disease-19 Quarantine Is More Detrimental Than Traditional Off-Season on Physical Conditioning of Professional Soccer Players. J Strength Cond Res 2020; 34:3316-3320. [DOI: 10.1519/jsc.0000000000003890] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Teodoro JL, Izquierdo M, da Silva LXN, Baroni BM, Grazioli R, Lopez P, Fritsch CG, Radaelli R, Saez de Asteasu ML, Bottaro M, Farinha JB, Pinto RS, Cadore EL. Effects of long-term concurrent training to failure or not in muscle power output, muscle quality and cardiometabolic risk factors in older men: A secondary analysis of a randomized clinical trial. Exp Gerontol 2020; 139:111023. [PMID: 32697957 DOI: 10.1016/j.exger.2020.111023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/25/2020] [Accepted: 07/12/2020] [Indexed: 12/13/2022]
Abstract
This study investigated the effects of concurrent training performed either with repetitions to failure or not to failure in muscle power, muscle quality (MQ), peak oxygen uptake (VO2peak), and visceral fat in older men. This is an ancillary analysis of a randomized controlled trial. 36 older men (mean age ± SD; 67.1 ± 5.1 years) were randomized into three groups: one performing repetitions to failure (RFG, n = 13), another performing repetitions not to failure and 50% of the repetitions of the RFG (NFG, n = 12), and third performing repetitions not to failure with equal training volume of the RFG (ENFG, n = 11). The training was performed twice a week for 20 weeks at intensities ranging from 65 to 80% of maximal strength. In each session, the individuals started with strengthening exercises and then performed aerobic exercise (i.e., walking) on a treadmill. The primary endpoint was change from baseline to post-20 wk of absolute and relative muscle power output during squat and countermovement jump, ultrasound measurements for MQ using quadriceps echo intensity, and visceral fat thickness, as well as their VO2peak through a maximal incremental test on a treadmill. All training groups improved similarly and significantly jump height (ranging from 9 to 16%) and all their muscle power outcomes (mean change ranging from 2 to 7%) (P < .001). In addition, all groups significantly decreased visceral fat thickness (ranging from -11 to -21%) (P < .001), and significantly increased VO2peak (ranging from 4 to 8%) (P < .01), with no differences between groups. No changes were observed in the MQ outcomes. Concurrent training performed using repetitions to failure or not to failure promoted similar gains in the muscle power output, aerobic capacity, and visceral fat in healthy older men.
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Affiliation(s)
- Juliana L Teodoro
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mikel Izquierdo
- Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain
| | - Larissa X N da Silva
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bruno M Baroni
- Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Rafael Grazioli
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Pedro Lopez
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carolina G Fritsch
- Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Régis Radaelli
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mikel L Saez de Asteasu
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain
| | - Martim Bottaro
- College of Physical Education, University of Brasilia, Brasília, DF, Brazil
| | - Juliano Boufleur Farinha
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ronei S Pinto
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduardo L Cadore
- School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Rabello R, Pompeo KD, de Almeida Paz I, Lanferdini FJ, Pinto RS, Vaz MA. Echo Intensity Reliability From Two Ultrasound Systems. Journal of Diagnostic Medical Sonography 2020. [DOI: 10.1177/8756479320929030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Objective: Echo intensity measurements are highly influenced by ultrasound system and parameters used for measurement, making comparisons of results obtained from different ultrasound machines difficult. Therefore, it is necessary to understand how reliability changes when using different ultrasound systems and parameters. Materials and Methods: ALOKA SSD4000 and GE LOGIQ P6 systems were used to compare rectus femoris echo intensity in 16 healthy young subjects (eight women) using different depths (D), gains (G), and frequencies (F). The following settings were adopted: ALOKA1 (D6/G30/F7.5), ALOKA2 (D6/G45/F7.5), ALOKA3 (D6/G30/F10), LOGIQ1 (D6/G50/F15), LOGIQ2 (D6/G0/F15), LOGIQ3 (D6/G0/F10), and LOGIQ4 (D6/G30/F10). Intraclass correlation coefficient, standard error of the measure, minimum difference, and Bland-Altman tests were performed to calculate reliability and agreement between systems’ settings. Results: ALOKA1 × LOGIQ1, ALOKA1 × LOGIQ4, and ALOKA3 × LOGIQ1 showed moderate to high ICCs and agreement on the Bland-Altman test. Conclusion: Echo intensity varies between systems and parameters, but reliability can be increased by adjusting the ultrasound settings.
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Affiliation(s)
- Rodrigo Rabello
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança (ESEFID), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Klauber D. Pompeo
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança (ESEFID), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Isabel de Almeida Paz
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança (ESEFID), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Fabio J. Lanferdini
- Laboratório de Biomecânica (BIOMEC), Centro de Desportos (CDS), Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brasil
| | - Ronei S. Pinto
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança (ESEFID), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Marco A. Vaz
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança (ESEFID), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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24
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Lopez P, Galvão DA, Taaffe DR, Newton RU, Souza G, Trajano GS, Pinto RS. Resistance training in breast cancer patients undergoing primary treatment: a systematic review and meta-regression of exercise dosage. Breast Cancer 2020; 28:16-24. [PMID: 32815096 DOI: 10.1007/s12282-020-01147-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Exercise is recognised as an adjunct therapy for breast cancer patients; however, little is known about the resistance training dose-response. We conducted a systematic review and meta-regression to examine the resistance training dose-response (i.e., volume and intensity) in breast cancer patients undergoing primary treatment. METHODS Searches in MEDLINE, CINAHL, and SPORTDiscus were conducted for studies published up to November 2019. Experimental studies that evaluated resistance-based exercise interventions in women with breast cancer undergoing primary treatment were included. Information about resistance training components, average change and change per week, as well as standardised mean difference were extracted, and used for meta-regression analysis. Outcome measures were upper and lower body muscle strength and body composition. RESULTS 10 trials were included in the systematic review and 4 trials in the dose-response analysis. Resistance training weekly prescribed volume was inversely associated with increases in upper and lower body muscle strength (r2 = 98.1-100%; p = 0.009), although there was no relationship between resistance training intensity and strength gains. There was insufficient data for the dose-response analysis of body mass index, percent body fat, and lean mass. CONCLUSION Low volume resistance training might be a suitable exercise recommendation for breast cancer patients undergoing primary treatment producing superior benefits for muscle strength compared to higher volume training, regardless of the training intensity. Low volume resistance training may provide a conservative and appropriate approach for breast cancer patients, allowing gradual progression and modification throughout the exercise program.
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Affiliation(s)
- Pedro Lopez
- Exercise Medicine Research Institute, Edith Cowan University, 270 Joondalup Drive, Perth, Western Australia, 6027, Australia. .,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia.
| | - Daniel A Galvão
- Exercise Medicine Research Institute, Edith Cowan University, 270 Joondalup Drive, Perth, Western Australia, 6027, Australia.,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia
| | - Dennis R Taaffe
- Exercise Medicine Research Institute, Edith Cowan University, 270 Joondalup Drive, Perth, Western Australia, 6027, Australia.,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia
| | - Robert U Newton
- Exercise Medicine Research Institute, Edith Cowan University, 270 Joondalup Drive, Perth, Western Australia, 6027, Australia.,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia.,School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Giovani Souza
- Exercise Research Laboratory, Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Gabriel S Trajano
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Ronei S Pinto
- Exercise Research Laboratory, Physical Education, Physiotherapy, and Dance School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Pinto RS, Machado UF, Passarelli M. Advanced glycation end products as biomarkers for cardiovascular disease: browning clarifying atherogenesis. Biomark Med 2020; 14:611-614. [DOI: 10.2217/bmm-2020-0060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- RS Pinto
- Laboratório de Lípides (LIM 10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Centro Universitário CESMAC, Alagoas, Brazil
| | - UF Machado
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas da Universidade de São Paulo, São Paulo, Brazil
| | - M Passarelli
- Laboratório de Lípides (LIM 10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
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Lima LCR, Nosaka K, Chen TC, Pinto RS, Greco CC, Denadai BS. Decreased running economy is not associated with decreased force production capacity following downhill running in untrained, young men. Eur J Sport Sci 2020; 21:84-92. [PMID: 32090683 DOI: 10.1080/17461391.2020.1727570] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The present study investigated the relationships between changes in running economy (RE) and indirect muscle damage markers following downhill running (DHR) to test the hypothesis that decreased RE after DHR would be associated with decreases in muscle function. Forty-five young men ran downhill (-15%) for 30 min at the velocity corresponding to 70% of their peak oxygen uptake (VO2peak). Oxygen uptake (VO2) and other parameters possibly associated with RE (blood lactate concentration, perceived exertion, stride length and frequency) were measured during 5-minute level running at the velocity corresponding to 80%VO2peak before, immediately after and 1-3 days after DHR. Knee extensor maximal voluntary contraction torque (MVC), rate of torque development, vertical jump performance, muscle soreness and serum creatine kinase activity were assessed at the same time points. The values of the dependent variables were compared among time points by one-way ANOVAs followed by Bonferroni post-hoc tests when appropriate. Pearson's correlation tests were used to examine relationships between changes in VO2 (RE parameter) and changes in muscle damage parameters. VO2 during the level run increased (p < 0.05) immediately after DHR (18.3 ± 4.6%) and sustained until 2 days post-DHR (11.7 ± 4.2%). MVC decreased (p < 0.05) immediately (-21.8 ± 6.1%) to 3 days (-13.6 ± 5.9%) post-DHR, and muscle soreness developed 1-3 days post-DHR. The magnitude of changes in VO2 did not significantly (p < 0.05) correlate with the changes in muscle damage makers (r = -0.02-0.13) nor stride length (r = -0.05) and frequency (r = -0.05). The absence of correlation between the changes in VO2 and MVC suggests that strength loss was not a key factor affecting RE.
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Affiliation(s)
- Leonardo C R Lima
- Human Performance Laboratory, São Paulo State University, Rio Claro, Brazil
| | - Kazunori Nosaka
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Trevor C Chen
- Department of Physical Education, National Taiwan Normal University, Taipei City, Taiwan
| | - Ronei S Pinto
- School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Camila C Greco
- Human Performance Laboratory, São Paulo State University, Rio Claro, Brazil
| | - Benedito S Denadai
- Human Performance Laboratory, São Paulo State University, Rio Claro, Brazil
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Grazioli R, Lopez P, Machado CLF, Farinha JB, Fagundes AO, Voser R, Reischak-Oliveira Á, Setuain I, Izquierdo M, Pinto RS, Cadore EL. Moderate volume of sprint bouts does not induce muscle damage in well-trained athletes. J Bodyw Mov Ther 2020; 24:206-211. [PMID: 31987546 DOI: 10.1016/j.jbmt.2019.05.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 05/15/2019] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Understanding the recovery in response to different sprint protocols is important for optimizing neuromuscular gains and organizing training sessions in sports. The current study aimed to investigate acute neuromuscular changes following a moderate volume of sprint protocols with and without change-of-direction. METHODS 26 well-trained male collegiate athletes from different sports were randomly allocated into straight-line group (SLG) or change-of-direction group (CODG). The protocols were 1 × 15 repetitions of 20-meter sprints in line (SLG) or with two changes in each repetition (CODG). Knee extension maximal and explosive strength, jump performance, serum creatine kinase, and quadriceps and hamstrings echo intensity were collected pre-, post- 0, 24, 48, and 72 h post-exercise. RESULTS There were no significant changes in any of the variables at any time point after the exercise protocols in comparison with pre-exercise values (p > 0.05). CONCLUSIONS The present study suggests that sprint training with moderate volume with or without change of direction does not induce neuromuscular or physiological changes during 72 h post-exercise. This information is especially important for sports staff in order to optimize training prescription and frequency.
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Affiliation(s)
- Rafael Grazioli
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Pedro Lopez
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carlos L F Machado
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Juliano B Farinha
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Alex O Fagundes
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rogério Voser
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Álvaro Reischak-Oliveira
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Igor Setuain
- Department of Health Sciences, Public University of Navarra, Tudela, Navarra, Spain
| | - Mikel Izquierdo
- Department of Health Sciences, Public University of Navarra, Tudela, Navarra, Spain
| | - Ronei S Pinto
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduardo L Cadore
- Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Ruas CV, Pinto RS, Haff GG, Lima CD, Brown LE. Effects of Different Combinations of Concentric and Eccentric Resistance Training Programs on Traditional and Alternative Hamstrings-to-Quadriceps Ratios. Sports (Basel) 2019; 7:E221. [PMID: 31614760 PMCID: PMC6835643 DOI: 10.3390/sports7100221] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 11/17/2022] Open
Abstract
Resistance training is often recommended for combined increases in traditional and alternative hamstrings-to-quadriceps (H:Q) ratios in order to reduce knee strength imbalance and associated hamstrings and knee ligament injury risk. The aim of this study was to investigate the effect of different concentric and eccentric resistance training programs on traditional and alternative H:Q ratios. Forty male volunteers were assigned to one of 4 groups: concentric quadriceps and concentric hamstrings (CON/CON, n = 10), eccentric quadriceps and eccentric hamstrings (ECC/ECC, n = 10), concentric quadriceps and eccentric hamstrings (CON/ECC, n = 10), or no training (control (CNTRL), n = 10). Traditional conventional (CR) and functional (FR), alternative rate of torque development (RTD), muscle size (MS), and muscle activation (MA) H:Q ratios were measured before and after six weeks of unilateral nondominant knee extension-flexion resistance training performed on an isokinetic dynamometer. The ECC/ECC training significantly increased FR (pre = 0.75 ± 0.11; post = 0.85 ± 0.15), whereas the lack of training (CNTRL) decreased the RTD H:Q ratio (pre = 1.10 ± 0.67; post = 0.73 ± 0.33). There were no differences between groups for the other traditional and alternative ratios following resistance training protocols. These findings suggest eccentric exercise for quadriceps and hamstrings as the most beneficial training program for inducing increases in the traditional FR. However, different resistance training strategies may be needed to also elicit increases in the alternative RTD, MS, and MA H:Q ratios for fully restoring muscle balance and reducing potential hamstrings and knee ligament injury risk.
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Affiliation(s)
- Cassio V Ruas
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup 6027, Australia.
- Exercise Research Laboratory, School of Physical Education, Physioteraphy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Porto Alegre 90690-200, Brazil.
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physioteraphy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Porto Alegre 90690-200, Brazil.
| | - Guy G Haff
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup 6027, Australia.
| | - Camila D Lima
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup 6027, Australia.
| | - Lee E Brown
- Center for Sport Performance and Human Performance Lab, Department of Kinesiology, California State University, Fullerton, 800 N State College Blvd, Fullerton, CA 92831, USA.
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Teodoro JL, da Silva LXN, Fritsch CG, Baroni BM, Grazioli R, Boeno FP, Lopez P, Gentil P, Bottaro M, Pinto RS, Izquierdo M, Cadore EL. Concurrent training performed with and without repetitions to failure in older men: A randomized clinical trial. Scand J Med Sci Sports 2019; 29:1141-1152. [DOI: 10.1111/sms.13451] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/29/2019] [Accepted: 04/24/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Juliana L. Teodoro
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Larissa X. Neves da Silva
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Carolina G. Fritsch
- Graduate Program in Rehabilitation Sciences Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil
| | - Bruno M. Baroni
- Graduate Program in Rehabilitation Sciences Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil
| | - Rafael Grazioli
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Francesco P. Boeno
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Pedro Lopez
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Paulo Gentil
- College of Physical Education and Dance Universidade Federal de Goiás Goiania Brazil
| | - Martim Bottaro
- Faculdade de Educação Física Universidade de Brasília Brasilia Brazil
| | - Ronei S. Pinto
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Mikel Izquierdo
- Department of Health Sciences Public University of Navarre Pamplona Spain
| | - Eduardo L. Cadore
- School of Physical Education, Physiotherapy and Dance Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
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Ruas CV, Pinto RS, Haff GG, Lima CD, Pinto MD, Brown LE. Alternative Methods of Determining Hamstrings-to-Quadriceps Ratios: a Comprehensive Review. Sports Med Open 2019; 5:11. [PMID: 30911856 PMCID: PMC6434009 DOI: 10.1186/s40798-019-0185-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/12/2019] [Indexed: 11/16/2022]
Abstract
The hamstrings-to-quadriceps muscle strength ratio calculated by peak torque has been used as an important tool to detect muscle imbalance, monitor knee joint stability, describe muscle strength properties and functionality, and for lower extremity injury prevention and rehabilitation. However, this ratio does not consider other neuromuscular variables that can also influence the antagonist to agonist muscle relationship, such as torque produced at multiple angles of range of motion, explosive strength, muscle size, muscle fatigue, or muscle activation. The aim of this study was to comprehensively review alternative methods of determining the hamstrings-to-quadriceps ratio. These include ratios calculated by angle-specific torque, rate of torque development, muscle size, fatigue index, and muscle activation (measured by electromyography). Collectively, the literature demonstrates that utilizing alternative methods of determining the hamstrings-to-quadriceps ratio can be functionally relevant for a better understanding of the neuromuscular mechanisms underpinning the interaction of strength between hamstrings and quadriceps. However, there is insufficient evidence to recommend any of the alternative methods as sensitive clinical tools for predicting injury risk and monitoring knee joint integrity. Future longitudinal studies, along with injury incidence, are needed to further investigate all alternative methods of determining the hamstrings-to-quadriceps ratio. These have potential to offer insight into how athletes and the general population should be trained for performance enhancement and injury reduction, and may be used along with traditional methods for a thorough assessment of an individual’s H:Q muscle balance.
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Affiliation(s)
- Cassio V Ruas
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA, Australia.
| | - Ronei S Pinto
- Exercise Research Laboratory, School of Physical Education, Physioteraphy and Dance, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, Porto Alegre, RS, Brazil
| | - G Gregory Haff
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA, Australia
| | - Camila D Lima
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA, Australia
| | - Matheus D Pinto
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA, Australia
| | - Lee E Brown
- Center for Sport Performance and Human Performance Lab, Department of Kinesiology, California State University, 800 N State College Blvd, Fullerton, CA, USA
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Fritsch CG, Dornelles MP, Teodoro JL, da Silva LXN, Vaz MA, Pinto RS, Cadore EL, Baroni BM. Effects of photobiomodulation therapy associated with resistance training in elderly men: a randomized double-blinded placebo-controlled trial. Eur J Appl Physiol 2018; 119:279-289. [DOI: 10.1007/s00421-018-4023-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 10/17/2018] [Indexed: 12/25/2022]
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Radaelli R, Brusco CM, Lopez P, Rech A, Machado CL, Grazioli R, Müller DC, Cadore EL, Pinto RS. Higher muscle power training volume is not determinant for the magnitude of neuromuscular improvements in elderly women. Exp Gerontol 2018; 110:15-22. [DOI: 10.1016/j.exger.2018.04.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/18/2018] [Accepted: 04/20/2018] [Indexed: 11/28/2022]
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Ruas CV, Brown LE, Lima CD, Costa PB, Pinto RS. Effect of Three Different Muscle Action Training Protocols on Knee Strength Ratios and Performance. J Strength Cond Res 2018; 32:2154-2165. [DOI: 10.1519/jsc.0000000000002134] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ruas CV, Brown LE, Lima CD, Gregory Haff G, Pinto RS. Different Muscle Action Training Protocols on Quadriceps-Hamstrings Neuromuscular Adaptations. Int J Sports Med 2018; 39:355-365. [PMID: 29564846 DOI: 10.1055/s-0044-100391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The aim of this study was to compare three specific concentric and eccentric muscle action training protocols on quadriceps-hamstrings neuromuscular adaptations. Forty male volunteers performed 6 weeks of training (two sessions/week) of their dominant and non-dominant legs on an isokinetic dynamometer. They were randomly assigned to one of four groups; concentric quadriceps and concentric hamstrings (CON/CON, n=10), eccentric quadriceps and eccentric hamstrings (ECC/ECC, n=10), concentric quadriceps and eccentric hamstrings (CON/ECC, n=10), or no training (CTRL, n=10). Intensity of training was increased every week by decreasing the angular velocity for concentric and increasing it for eccentric groups in 30°/s increments. Volume of training was increased by adding one set every week. Dominant leg quadriceps and hamstrings muscle thickness, muscle quality, muscle activation, muscle coactivation, and electromechanical delay were tested before and after training. Results revealed that all training groups similarly increased MT of quadriceps and hamstrings compared to control (p<0.05). However, CON/ECC and ECC/ECC training elicited a greater magnitude of change. There were no significant differences between groups for all other neuromuscular variables (p>0.05). These findings suggest that different short-term muscle action isokinetic training protocols elicit similar muscle size increases in hamstrings and quadriceps, but not for other neuromuscular variables. Nevertheless, effect sizes indicate that CON/ECC and ECC/ECC may elicit the greatest magnitude of change in muscle hypertrophy.
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Affiliation(s)
- Cassio V Ruas
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.,Exercise Research Laboratory, Department of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Lee E Brown
- Department of Kinesiology, California State University Fullerton, Fullerton, United States
| | - Camila D Lima
- School of Human Kinetics and Recreation, Memorial University of Newfoundland Saint John's, Canada
| | - G Gregory Haff
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Ronei S Pinto
- Exercise Research Laboratory, Department of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Baroni BM, Pompermayer MG, Cini A, Peruzzolo AS, Radaelli R, Brusco CM, Pinto RS. Full Range of Motion Induces Greater Muscle Damage Than Partial Range of Motion in Elbow Flexion Exercise With Free Weights. J Strength Cond Res 2018; 31:2223-2230. [PMID: 27398917 DOI: 10.1519/jsc.0000000000001562] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Baroni, BM, Pompermayer, MG, Cini, A, Peruzzolo, AS, Radaelli, R, Brusco, CM, and Pinto, RS. Full range of motion induces greater muscle damage than partial range of motion in elbow flexion exercise with free weights. J Strength Cond Res 31(8): 2223-2230, 2017-Load and range of motion (ROM) applied in resistance training (RT) affect the muscle damage magnitude and the recovery time-course. Because exercises performed with partial ROM allow a higher load compared with those with full ROM, this study investigated the acute effect of a traditional RT exercise using full ROM or partial ROM on muscle damage markers. Fourteen healthy men performed 4 sets of 10 concentric-eccentric repetitions of unilateral elbow flexion on the Scott bench. Arms were randomly assigned to partial-ROM (50-100°) and full-ROM (0-130°) conditions, and load was determined as 80% of 1 repetition maximum (1RM) in the full- and partial-ROM tests. Muscle damage markers were assessed preexercise, immediately, and 24, 48, and 72 hours after exercise. Primary outcomes were peak torque, muscle soreness during palpation and elbow extension, arm circumference, and joint ROM. The load lifted in the partial-ROM condition (1RM = 19.1 ± 3.0 kg) was 40 ± 18% higher compared with the full-ROM condition (1RM = 13.7 ± 2.2 kg). Seventy-two hours after exercise, the full-ROM condition led to significant higher soreness sensation during elbow extension (1.3-4.1 cm vs. 1.0-1.9 cm) and smaller ROM values (97.5-106.1° vs. 103.6-115.7°). Peak torque, soreness from palpation, and arm circumference were statistically similar between conditions, although mean values in all time points of these outcomes have suggested more expressive muscle damage for the full-ROM condition. In conclusion, elbow flexion exercise with full ROM seems to induce greater muscle damage than partial-ROM exercises, even though higher absolute load was achieved with partial ROM.
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Affiliation(s)
- Bruno M Baroni
- 1Strength Training Research Group, Exercise Research Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and 2Graduate Program in Rehabilitation Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
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Brusco CM, Blazevich AJ, Radaelli R, Botton CE, Cadore EL, Baroni BM, Trajano GS, Pinto RS. The effects of flexibility training on exercise-induced muscle damage in young men with limited hamstrings flexibility. Scand J Med Sci Sports 2018; 28:1671-1680. [PMID: 29396987 DOI: 10.1111/sms.13068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2018] [Indexed: 11/30/2022]
Abstract
Adaptations to 6 weeks of supervised hamstring stretching training and its potential impact on symptoms of eccentric exercise-induced muscle damage (EIMD) were studied in 10 young, untrained men with limited hamstrings flexibility. Participants performed unilateral flexibility training (experimental leg; EL) on an isokinetic dynamometer, while the contralateral limb acted as control (CL). Hip range of motion (ROM), passive, isometric, and concentric torques, active optimum angle, and biceps femoris and semitendinosus muscle thickness and ultrasound echo intensity were assessed both before and after the training. Additionally, muscle soreness was assessed before and after an acute eccentric exercise bout in both legs (EL and CL) at post-training only. Hip ROM increased (P < .001) only in EL after the training (EL = 10.6° vs CL = 1.6°), but no changes (P > .05) in other criterion measurements were observed. After a bout of eccentric exercise at the end of the program, isometric and dynamic peak torques and muscle soreness ratings were significantly altered at all time points equally in EL and CL. Also, active optimum angle was reduced immediately, 48 and 72 hours post-exercise, and hip ROM was reduced at 48 and 72 hours equally in EL and CL. Finally, biceps femoris muscle thickness was significantly increased at all time points, and semitendinosus thickness and echo intensity significantly increased at 72 hours, with no significant differences between legs. The stretching training protocol significantly increased hip ROM; however, it did not induce a protective effect on EIMD in men with tight hamstrings.
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Affiliation(s)
- C M Brusco
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - A J Blazevich
- Centre for Exercise and Sports Science Research, School of Exercise and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - R Radaelli
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - C E Botton
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - E L Cadore
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - B M Baroni
- Graduate Program in Rehabilitation Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - G S Trajano
- School of Exercise& Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - R S Pinto
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Cadore EL, Pinto RS, Teodoro JL, da Silva LXN, Menger E, Alberton CL, Cunha G, Schumann M, Bottaro M, ZamboM-Ferraresi F, Izquierdo M. Cardiorespiratory Adaptations in Elderly Men Following Different Concurrent Training Regimes. J Nutr Health Aging 2018; 22:483-490. [PMID: 29582887 DOI: 10.1007/s12603-017-0958-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND This study aimed to investigate the effects of different intra-session exercise orders during concurrent training (CT) on endurance performance in elderly men, as well as to verify its influence on individual responses in endurance performance. DESIGN Twenty-five healthy elderly men (64.7 ± 4.1 years) were placed into two groups: strength training prior to endurance training (SE, n=13), and one in the reverse order (ES, n=12). CT was performed three times a week during 12 weeks. Before and after training, peak oxygen uptake (VO2peak), maximal workload (Wmax), absolute and relative cycling economy at 25, 50, 75 and 100 W (i.e., average VO2 at different stages) were assessed. RESULTS Similar increases in VO2peak were observed in the SE and ES groups (SE: 8.1 ± 9.9%; ES: 9.3 ± 9.8%; P<0.001), as well as in Wmax (SE: 19.9 ± 19.3%; ES: 24.1 ± 24.0%; P<0.001). Moreover, significant reductions were observed in the absolute VO2 at 100 W (P<0.05) in the SE and ES groups. No difference between groups was observed. In the ES group, one subject did not respond positively in terms of both VO2max and Wmax, whereas 4 subjects did not respond positively in terms of both VO2max and Wmax in SE group. CONCLUSIONS CT improved maximal and submaximal endurance performance in elderly men, independent of intra-session exercise order. However, it seems that the ES order elicited more individual responsiveness in terms of maximal endurance performance than SE order.
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Affiliation(s)
- E L Cadore
- Mikel Izquierdo, PhD, Department of Health Sciences, Public University of Navarra (Navarra) Spain, Campus of Tudela, Av. de Tarazona s/n. 31500 Tudela (Navarra) Spain, Tel.: + 34 948 417876, E-mail:
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Ruas CV, Brown LE, Lima CD, Costa PB, Wong MA, Pinto RS. Effect of Three Different Muscle Action Training Protocols on Hamstrings-to-Quadriceps Muscle Size Ratio. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000517169.83107.28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Ruas CV, Pinto RS, Lima CD, Costa PB, Brown LE. Test-Retest Reliability of Muscle Thickness, Echo-Intensity and Cross Sectional Area of Quadriceps and Hamstrings Muscle Groups Using B-mode Ultrasound. ACTA ACUST UNITED AC 2017. [DOI: 10.7575/aiac.ijkss.v.5n.1p.35] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Ultrasound muscle images have been extensively used as tools for investigating, diagnosing and monitoring thigh muscles. However, there is a lack of information examining ultrasound reliability of quadriceps and hamstrings images for research and clinical use. Objectives: To determine the reliability of muscle thickness (MT), echo intensity (EI) and cross sectional area (CSA) of quadriceps and hamstrings muscle groups. Methods: Single transverse images of the rectus femoris (RF), vastus intermedius (VI), vastus medialis (VM), vastus lateralis (VL), biceps femoris long head (BFlh), semitendinosus (ST), and semimembranosus (SM) muscles were scanned in the right and left legs of ten healthy collegiate men (age 23.4 ± 2.2 yrs, mass 71.7 ± 11.7 kg, height 1.73 ± 0.06 m) between two sessions with one day interval. Intraclass correlation coefficients (ICCs), standard error of measurement (SEM), and minimum difference to be considered “real” (MD) were measured for MT, EI, and CSA. Results: A range of 0.97-0.99, 0.83-0.88, and 0.86-0.97 (ICC); 0.72-1.38, 2.73-3.41, and 0.36-1.04 (SEM); and 2.01-3.82, 7.56-9.46, and 0.99-2.89 (MD) were found for quadriceps muscles, and 0.93-0.99, 0.74-0.90, and 0.89-0.96 (ICC); 0.73-1.94, 3.29-4.98, and 0.69-1.08 (SEM); and 2.03-5.38, 9.13-13.81, and 1.91-2.98 (MD) were found for hamstrings muscles. Conclusions: These results suggest that ultrasound imaging of both quadriceps and hamstrings muscle architecture is a reliable technique for assessing thigh musculoskeletal tissue. The anatomical sites, as well as ultrasound adjustments, images, and results utilized here may assist future researchers and clinicians as reference tools when measuring quadriceps and hamstrings musculature.
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Lima CD, Brown LE, Wong MA, Leyva WD, Pinto RS, Cadore EL, Ruas CV. Acute Effects of Static vs. Ballistic Stretching on Strength and Muscular Fatigue Between Ballet Dancers and Resistance-Trained Women. J Strength Cond Res 2016; 30:3220-3227. [PMID: 27548798 DOI: 10.1519/jsc.0000000000001606] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lima, CD, Brown, LE, Wong, MA, Leyva, WD, Pinto, RS, Cadore, EL, and Ruas, CV. Acute effects of static vs. ballistic stretching on strength and muscular fatigue between ballet dancers and resistance-trained women. J Strength Cond Res 30(11): 3220-3227, 2016-Stretching is used to increase joint range of motion, but the acute effects can decrease muscle strength. However, this may depend on the population or mode of stretching. The purpose of this study was to compare the acute effects of static vs. ballistic stretching on strength and muscular fatigue between ballet dancers and resistance-trained women. Fifteen resistance-trained women (age 23.8 ± 1.80 years, mass 67.47 ± 7.77 kg, height 168.30 ± 5.53 cm) and 12 ballet dancers (age 22.8 ± 3.04 years, mass 58.67 ± 5.65 kg, height 168.00 ± 7.69 cm) performed 5 days of testing. The first day was control (no stretching), whereas the other 4 days were static or ballistic stretching in a counterbalanced order. Range of motion, strength, and fatigue tests were also performed. Both groups demonstrated a significant decrease in hamstrings strength after static (102.71 ± 2.67 N·m) and ballistic stretching (99.49 ± 2.61 N·m) compared with control (113.059 ± 3.25 N·m), with no changes in quadriceps strength. For fatigue, only ballet dancers demonstrated a decrease from control (71.79 ± 4.88%) to ballistic (65.65 ± 8.19%), but no difference with static (65.01 ± 12.29%). These findings suggest that stretching decreases hamstrings strength similarly in ballet dancers and resistance-trained women, with no differences between modes of stretching. However, ballistic stretching only decreased muscular fatigue in ballet dancers, but not in resistance-trained women. Therefore, no stretching should be performed before strength performance. However, ballistic stretching may decrease acute muscular fatigue in ballet dancers.
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Affiliation(s)
- Camila D Lima
- 1School of Physical Education, Federal University of Rio Grand do Sul, Porto Alegre, Brazil; and 2Human Performance Laboratory, Center for Sport Performance, Department of Kinesiology, California State University, Fullerton, California
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Botton CE, Radaelli R, Wilhelm EN, Rech A, Brown LE, Pinto RS. Neuromuscular Adaptations to Unilateral vs. Bilateral Strength Training in Women. J Strength Cond Res 2016; 30:1924-32. [DOI: 10.1519/jsc.0000000000001125] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Brentano MA, Umpierre D, Santos LP, Lopes AL, Radaelli R, Pinto RS, Kruel LFM. Muscle Damage and Muscle Activity Induced by Strength Training Super-Sets in Physically Active Men. J Strength Cond Res 2016; 31:1847-1858. [PMID: 27243916 DOI: 10.1519/jsc.0000000000001511] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Brentano, MA, Umpierre, D, Santos, LP, Lopes, AL, Radaelli, R, Pinto, RS, and Kruel, LFM. Muscle damage and muscle activity induced by strength training super-sets in physically active men. J Strength Cond Res 31(7): 1847-1858, 2017-In strength training, muscle activity is often analyzed by surface electromyography (EMG) and muscle damage through indirect markers, such as plasma concentrations of creatine kinase (CK) after exercise. However, there is little information about the influence of the strength exercises order on these parameters. The purpose of this study is to analyze the effect of strength exercises order (super-sets) in muscle activity and indirect markers of muscle damage. Twenty men were randomly assigned to one of the strength training sessions (TS). Each TS (5 sets × 8-10 repetition maximum) consisted of 2 exercises for the knee extensor muscles and 2 exercises for the horizontal shoulder flexors performed in a different order: exercises for the same muscle group grouped (grouped exercises [GE]: n = 10; 26.6 ± 3.4 years; 17.4 ± 3.4 body fat) or separated (separated exercises [SE]: n = 10; 24.9 ± 2.6 years; 15.4 ± 5.9 body fat). Muscle activity was analyzed by surface EMG (vastus lateralis [VL], vastus medialis [VM], rectus femoris [RF], pectoralis major [PM], and anterior deltoid [AD]), and the main indirect marker of muscle damage was the CK, evaluated immediately before and after the first 5 days of each TS. There was a higher EMG activity of GE in the RF (GE: 88.4% × SE: 73.6%) and AD (GE: 176.4% × SE: 100.0%), in addition to greater concentration of CK (GE: 632.4% × SE: 330.5%) after exercise. Our findings suggest that, in physically active men, implementing super-sets with GE promotes greater muscle effort and muscle damage, wherein 5 days are not enough to recover the trained muscle groups.
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Affiliation(s)
- Michel A Brentano
- 1Occupational Health, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Brazil, Porto Alegre, Brazil; 2Exercise Pathophysiology Research Laboratory, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; 3Program in Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; 4Faculdade SOGIPA, Porto Alegre, Brazil; and 5Exercise Research Laboratory, Physical Education School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Lima CD, Brown LE, Pinto RS, Ruas CV, Wong MA, Leyva WD. Acute Effects of Static vs. Ballistic Stretching on Strength Between Ballet Dancers and Resistance Trained Women. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487797.98633.db] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ruas CV, Brown LE, Lima CD, Mesquita AR, Pinto RS. Effect of Two Different Isokinetic Training Protocols on Functional Hamstrings-to-Quadriceps Ratios. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486418.80965.88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ruas CV, Minozzo F, Pinto MD, Brown LE, Pinto RS. Lower-extremity strength ratios of professional soccer players according to field position. J Strength Cond Res 2015; 29:1220-6. [PMID: 25436632 DOI: 10.1519/jsc.0000000000000766] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Previous investigators have proposed that knee strength, hamstrings to quadriceps, and side-to-side asymmetries may vary according to soccer field positions. However, different results have been found in these variables, and a generalization of this topic could lead to data misinterpretation by coaches and soccer clubs. Thus, the aim of this study was to measure knee strength and asymmetry in soccer players across different field positions. One hundred and two male professional soccer players performed maximal concentric and eccentric isokinetic knee actions on the preferred and nonpreferred legs at a velocity of 60° · s. Players were divided into their field positions for analysis: goalkeepers, side backs, central backs, central defender midfielders, central attacking midfielders, and forwards. Results demonstrated that only goalkeepers (GK) differed from most other field positions on players' characteristics, and concentric peak torque across muscles. Although all players presented functional ratios of the preferred (0.79 ± 0.14) and nonpreferred (0.75 ± 0.13) legs below accepted normative values, there were no differences between positions for conventional or functional strength ratios or side-to-side asymmetry. The same comparisons were made only between field players, without inclusion of the GK, and no differences were found between positions. Therefore, the hamstrings to quadriceps and side-to-side asymmetries found here may reflect knee strength functional balance required for soccer skills performance and game demands across field positions. These results also suggest that isokinetic strength profiles should be considered differently in GK compared with other field positions due to their specific physiological and training characteristics.
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Affiliation(s)
- Cassio V Ruas
- 1Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and 2Department of Kinesiology, California State University, Fullerton, California
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Carteri RBK, Schaun MI, Lopes AL, Teixeira BC, Macedo RCO, Pinto RS, Homem De Bittencourt PI, Reischak-Oliveira Á. Lipid peroxidation and total glutathione after different intensities of resistance exercise in trained men. J Sports Med Phys Fitness 2015; 55:735-741. [PMID: 26360964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
AIM Since studies on resistance exercise and oxidative stress markers show contradictory results, it is not clear whether different intensities of exercise are the determinant of changes in such markers. The objective of this study was to investigate the acute effects of different intensities of resistance exercise on lipid peroxidation and total glutathione in previously resistance trained men. METHODS Eight male subjects with at least 2 years of resistance training experience performed two different resistance exercise protocols: low-intensity (LI), 60% of one repetition maximum (1RM) and high-intensity (HI), 85% of 1RM. Both protocols involved seven exercises and subjects performed one set of each exercise. Blood samples were obtained before and immediately after exercise for lipid peroxidation and total glutathione analysis. RESULTS The results indicated a significant difference in total workload (load multiplied by repetitions performed) between the LI and HI protocols (P<0.05) and no differences on lipid peroxidation and total glutathione after both LI and HI protocols. CONCLUSION This study suggests that resistance exercise protocols composed of a single set of seven exercises, regardless of the intensity or total workload do not induce to oxidative stress, suggesting that volume is the main variable to induce oxidative stress in previously resistance trained individuals.
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Affiliation(s)
- R B K Carteri
- Exercise Research Laboratory (Lapex), School of Physical Education (ESEF), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil -
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Ruas CV, Pinto RS, Cadore EL, Brown LE. Analysis Of Side-to-side Asymmetry Assessment Of The Shoulder Rotators By Angle Specificity. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000477366.05577.a8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Alberton CL, Ferrari R, Cadore EL, Pinto SS, Pinto RS, Kruel LFM. Effects Of Different Intensities Of Aerobic Exercise During Concurrent Training On Cardiorespiratory Adaptations In Women. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000478182.77219.b7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Radaelli R, Fleck SJ, Leite T, Leite RD, Pinto RS, Fernandes L, Simão R. Dose-Response of 1, 3, and 5 Sets of Resistance Exercise on Strength, Local Muscular Endurance, and Hypertrophy. J Strength Cond Res 2015; 29:1349-58. [DOI: 10.1519/jsc.0000000000000758] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ruas CV, Pinto MD, Brown LE, Minozzo F, Mil-Homens P, Pinto RS. The association between conventional and dynamic control knee strength ratios in elite soccer players. ISOKINET EXERC SCI 2015. [DOI: 10.3233/ies-140557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Cassio V. Ruas
- Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Matheus D. Pinto
- Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Lee E. Brown
- Department of Kinesiology, California State University, Fullerton, CA, USA
| | - Felipe Minozzo
- Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Pedro Mil-Homens
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal
| | - Ronei S. Pinto
- Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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