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Kassiano W, Costa B, Kunevaliki G, Soares D, Stavinski N, Francsuel J, Carneiro MAS, Tricoli I, Nunes JP, Ribeiro AS, Cyrino ES. Muscle Swelling of the Triceps Surae in Response to Straight-Leg and Bent-Leg Calf Raise Exercises in Young Women. J Strength Cond Res 2023; 37:e438-e443. [PMID: 37015022 DOI: 10.1519/jsc.0000000000004491] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
ABSTRACT Kassiano, W, Costa, B, Kunevaliki, G, Soares, D, Stavinski, N, Francsuel, J, Carneiro, MAS, Tricoli, I, Nunes, JP, Ribeiro, AS, and Cyrino, ES. Muscle swelling of the triceps surae in response to straight-leg and bent-leg calf raise exercises in young women. J Strength Cond Res 37(7): e438-e443, 2023-Triceps surae muscle swelling in response to different resistance exercises remains to be determined. This study compared the effects of straight-leg (STRA-leg) calf raise vs. bent-leg (BENT-leg) calf raise exercises on triceps surae muscle swelling. Seventeen young women (23.7 ± 4.0 years; 67.4 ± 16.0 kg; and 163.5 ± 7.2 cm) performed 2 resistance training sessions; in one, they performed the STRA-leg calf raise, and in another, they performed the BENT-leg calf raise. A randomized, cross-over, and counterbalanced design was adopted for this investigation. The subjects performed 4 sets of 20 repetitions maximum until concentric muscular failure. The muscle thickness of the gastrocnemius medial (GM), gastrocnemius lateral (GL), and soleus (SOL) was taken through B-mode ultrasound before and immediately after the calf raise exercises. STRA-leg calf raise elicited greater increases in muscle thickness of GM (+8.8% vs. -0.9%, p < 0.001) and GL (+14.5% vs. +7.0%, p < 0.001) than BENT-leg calf raise. Conversely, BENT-leg calf raise elicited greater increases in SOL muscle thickness than STRA-leg calf raise (+15.4% vs. +7.7%, p < 0.001). From a practical perspective, the STRA-leg calf raise should be preferred if the aim is stimulating the 3 muscles that comprise the triceps surae, whereas the BENT-leg calf raise should be prioritized if the target muscle is the SOL.
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Affiliation(s)
- Witalo Kassiano
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Bruna Costa
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Gabriel Kunevaliki
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Danrlei Soares
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Natã Stavinski
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Jarlisson Francsuel
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Marcelo A S Carneiro
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - Ian Tricoli
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | - João Pedro Nunes
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
| | | | - Edilson S Cyrino
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, State University of Londrina, Londrina, Brazil; and
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Malyško-Ptašinskė V, Staigvila G, Novickij V. Invasive and non-invasive electrodes for successful drug and gene delivery in electroporation-based treatments. Front Bioeng Biotechnol 2023; 10:1094968. [PMID: 36727038 PMCID: PMC9885012 DOI: 10.3389/fbioe.2022.1094968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/28/2022] [Indexed: 01/17/2023] Open
Abstract
Electroporation is an effective physical method for irreversible or reversible permeabilization of plasma membranes of biological cells and is typically used for tissue ablation or targeted drug/DNA delivery into living cells. In the context of cancer treatment, full recovery from an electroporation-based procedure is frequently dependent on the spatial distribution/homogeneity of the electric field in the tissue; therefore, the structure of electrodes/applicators plays an important role. This review focuses on the analysis of electrodes and in silico models used for electroporation in cancer treatment and gene therapy. We have reviewed various invasive and non-invasive electrodes; analyzed the spatial electric field distribution using finite element method analysis; evaluated parametric compatibility, and the pros and cons of application; and summarized options for improvement. Additionally, this review highlights the importance of tissue bioimpedance for accurate treatment planning using numerical modeling and the effects of pulse frequency on tissue conductivity and relative permittivity values.
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Affiliation(s)
| | - Gediminas Staigvila
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Vitalij Novickij
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
- Department of Immunology, State Research Institute Centre of Innovative Medicine, Vilnius, Lithuania
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3
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Muscle Glycogen Assessment and Relationship with Body Hydration Status: A Narrative Review. Nutrients 2022; 15:nu15010155. [PMID: 36615811 PMCID: PMC9823884 DOI: 10.3390/nu15010155] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/25/2022] [Accepted: 12/26/2022] [Indexed: 12/30/2022] Open
Abstract
Muscle glycogen is a crucial energy source for exercise, and assessment of muscle glycogen storage contributes to the adequate manipulation of muscle glycogen levels in athletes before and after training and competition. Muscle biopsy is the traditional and gold standard method for measuring muscle glycogen; alternatively, 13C magnetic resonance spectroscopy (MRS) has been developed as a reliable and non-invasive method. Furthermore, outcomes of ultrasound and bioimpedance methods have been reported to change in association with muscle glycogen conditions. The physiological mechanisms underlying this activity are assumed to involve a change in water content bound to glycogen; however, the relationship between body water and stored muscle glycogen is inconclusive. In this review, we discuss currently available muscle glycogen assessment methods, focusing on 13C MRS. In addition, we consider the involvement of muscle glycogen in changes in body water content and discuss the feasibility of ultrasound and bioimpedance outcomes as indicators of muscle glycogen levels. In relation to changes in body water content associated with muscle glycogen, this review broadens the discussion on changes in body weight and body components other than body water, including fat, during carbohydrate loading. From these discussions, we highlight practical issues regarding muscle glycogen assessment and manipulation in the sports field.
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Hirono T, Ikezoe T, Taniguchi M, Tanaka H, Saeki J, Yagi M, Umehara J, Ichihashi N. Relationship Between Muscle Swelling and Hypertrophy Induced by Resistance Training. J Strength Cond Res 2022; 36:359-364. [PMID: 31904714 DOI: 10.1519/jsc.0000000000003478] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Hirono, T, Ikezoe, T, Taniguchi, M, Tanaka, H, Saeki, J, Yagi, M, Umehara, J, and Ichihashi, N. Relationship between muscle swelling and hypertrophy induced by resistance training. J Strength Cond Res 36(2): 359-364, 2022-Muscle swelling immediately after resistance exercise may be induced by metabolic stress. The accumulation of metabolic stress is considered to promote muscle hypertrophy after several weeks of resistance training (RT). The purpose of this study was to determine the relationship between muscle swelling immediately after the first session of RT and muscle hypertrophy after a 6-week RT using ultrasonography. Twenty-two untrained young men performed knee extension resistance exercise consisting of 3 sets with 8 repetitions at a load of 80% of one repetition maximum for 6 weeks (3 d·wk-1). Muscle thickness of the quadriceps femoris was measured using ultrasonography device at 3 anatomical sites (proximal, medial, and distal sites) of the middle, lateral, and medial part of the anterior thigh. The sum of the muscle thickness at 9 measurement sites was used for analysis. Acute change in muscle thickness immediately after the first session of RT was used as an indicator of muscle swelling. Chronic change in muscle thickness after the 6-week RT was used as an indicator of muscle hypertrophy. A significant increase in muscle thickness was observed immediately after the first session of RT (8.3 ± 3.2%, p < 0.001). After the 6-week RT, muscle thickness increased significantly (2.9 ± 2.6%, p < 0.001). A significant positive correlation was found between muscle swelling and muscle hypertrophy (ρ = 0.443, p = 0.039). This study suggests that the greater the muscle swelling immediately after the first session of RT, the greater the muscle hypertrophy after RT.
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Affiliation(s)
- Tetsuya Hirono
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Tome Ikezoe
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masashi Taniguchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroki Tanaka
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Rehabilitation Unit, Kyoto University Hospital, Kyoto, Japan ; and
| | - Junya Saeki
- Japan Society for the Promotion of Science, Tokyo, Japan.,Faculty of Sport Sciences, Waseda University, Saitama, Japan
| | - Masahide Yagi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Jun Umehara
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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5
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Willwacher S, Sleboda DA, Mählich D, Brüggemann GP, Roberts TJ, Bratke G. The time course of calf muscle fluid volume during prolonged running. Physiol Rep 2021; 8:e14414. [PMID: 32378332 PMCID: PMC7202985 DOI: 10.14814/phy2.14414] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/16/2020] [Indexed: 01/30/2023] Open
Abstract
Muscle fluid is essential for the biochemistry and the biomechanics of muscle contraction. Here, we provide evidence that muscle fluid volumes undergo significant changes during 75 min of moderate intensity (2.7 ± 0.4 m/s) running. Using MRI measurements at baseline and after 2.5, 5, 10, 15, 45 and 75 min, we found that the volumes of calf muscles (quantified through average cross‐sectional area) in 18 young recreational runners increase (up to 9% in the gastrocnemii) at the beginning and decrease (below baseline levels) at later stages of running. However, the intensity of changes varied between analyzed muscles. We speculate that these changes are induced by muscle activity and dehydration‐related changes in osmotic pressure gradients between intramuscular and extramuscular spaces. These findings highlight the complex nature of muscle fluid shifts during prolonged running exercise.
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Affiliation(s)
- Steffen Willwacher
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany.,School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - David A Sleboda
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, USA
| | - Daniela Mählich
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Gert-Peter Brüggemann
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Thomas J Roberts
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, USA
| | - Grischa Bratke
- Department of Diagnostic and Interventional Radiology, University of Cologne, Cologne, Germany
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6
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Mandić M, Forsgren MF, Romu T, Widholm P, Sundblad P, Gustafsson T, Rullman E. Interval-induced metabolic perturbation determines tissue fluid shifts into skeletal muscle. Physiol Rep 2021; 9:e14841. [PMID: 33904652 PMCID: PMC8077120 DOI: 10.14814/phy2.14841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/26/2021] [Accepted: 03/08/2021] [Indexed: 12/23/2022] Open
Abstract
Intense interval exercise has proven to be as effective as traditional endurance exercise in improving maximal oxygen uptake. Shared by these two exercise regimes is an acute reduction in plasma volume, which is a suggested stimulus behind exercise-induced increases in blood volume and maximal oxygen uptake. This study aimed to link exercise-induced metabolic perturbation with volume shifts into skeletal muscle tissue. Ten healthy subjects (mean age 33 ± 8 years, 5 males and 5 females) performed three 30 s all-out sprints on a cycle ergometer. Upon cessation of exercise magnetic resonance imaging, 31 Phosphorus magnetic resonance spectroscopy and blood samples were used to measure changes in muscle volume, intramuscular energy metabolites and plasma volume. Compared to pre-exercise, muscle volume increased from 1147.1 ± 35.6 ml to 1283.3 ± 11.0 ml 8 min post-exercise. At 30 min post-exercise, muscle volume was still higher than pre-exercise (1147.1 ± 35.6 vs. 1222.2 ± 6.8 ml). Plasma volume decreased by 16 ± 3% immediately post-exercise and recovered back to - 5 ± 6% after 30 min. Principal component analysis of exercise performance, muscle and plasma volume changes as well as changes in intramuscular energy metabolites showed generally strong correlations between metabolic and physiological variables. The strongest predictor for the volume shifts of muscle and plasma was the magnitude of glucose-6-phosphate accumulation post-exercise. Interval training leads to large metabolic and hemodynamic perturbations with accumulation of glucose-6-phosphate as a possible key event in the fluid flux between the vascular compartment and muscle tissue.
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Affiliation(s)
- Mirko Mandić
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Mikael F Forsgren
- AMRA Medical AB, Linköping, Sweden.,Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | | | - Per Widholm
- AMRA Medical AB, Linköping, Sweden.,Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.,Department of Radiology, and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Patrik Sundblad
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas Gustafsson
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Eric Rullman
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
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7
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Anand G, Yu Y, Lowe A, Kalra A. Bioimpedance analysis as a tool for hemodynamic monitoring: overview, methods and challenges. Physiol Meas 2021; 42. [PMID: 33607637 DOI: 10.1088/1361-6579/abe80e] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/19/2021] [Indexed: 12/14/2022]
Abstract
Recent advances in hemodynamic monitoring have seen the advent of non-invasive methods which offer ease of application and improve patient comfort. Bioimpedance Analysis or BIA is one of the currently employed non-invasive techniques for hemodynamic monitoring. Impedance Cardiography (ICG), one of the implementations of BIA, is widely used as a non-invasive procedure for estimating hemodynamic parameters such as stroke volume (SV) and cardiac output (CO). Even though BIA is not a new diagnostic technique, it has failed to gain consensus as a reliable measure of hemodynamic parameters. Several devices have emerged for estimating CO using ICG which are based on evolving methodologies and techniques to calculate SV. However, the calculations are generally dependent on the electrode configurations (whole body, segmental or localised) as well as the accuracy of different techniques in tracking blood flow changes. Blood volume changes, concentration of red blood cells, pulsatile velocity profile and ambient temperature contribute to the overall conductivity of blood and hence its impedance response during flow. There is a growing interest in investigating limbs for localised BIA to estimate hemodynamic parameters such as pulse wave velocity. As such, this paper summarises the current state of hemodynamic monitoring through BIA in terms of different configurations and devices in the market. The conductivity of blood flow has been emphasized with contributions from both volume and velocity changes during flow. Recommendations for using BIA in hemodynamic monitoring have been mentioned highlighting the suitable range of frequencies (1 kHz-1 MHz) as well as safety considerations for a BIA setup. Finally, current challenges in using BIA such as geometry assumption and inaccuracies have been discussed while mentioning potential advantages of a multi-frequency analysis to cover all the major contributors to blood's impedance response during flow.
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Affiliation(s)
- Gautam Anand
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
| | - Yang Yu
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
| | - Andrew Lowe
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
| | - Anubha Kalra
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
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Psycho-Electrophysiological Benefits of Forest Therapies Focused on Qigong and Walking with Elderly Individuals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18063004. [PMID: 33804164 PMCID: PMC7999348 DOI: 10.3390/ijerph18063004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/28/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022]
Abstract
We developed two distinct forest therapy programs (FTPs) and compared their effects on dementia prevention and related health problems for older adults. One was focused on Qigong practice in the forest (QP) and the other involved active walking in the forest (WP). Both FTPs consisted of twelve 2-h sessions over six weeks and were conducted in an urban forest. We obtained data from 25, 18, and 26 participants aged 65 years or above for the QP, WP, and control groups, respectively. Neuropsychological scores via cognition (MoCA), geriatric depression (GDS) and quality of life (EQ-5D), and electrophysiological variables (electroencephalography, bioimpedance, and heart rate variability) were measured. We analyzed the intervention effects with a generalized linear model. Compared to the control group, the WP group showed benefits in terms of neurocognition (increases in the MoCA score, and alpha and beta band power values in the electroencephalogram), sympathetic nervous activity, and bioimpedance in the lower body. On the other hand, the QP group showed alleviated depression and an increased bioimpedance phase angle in the upper body. In conclusion, both active walking and Qigong in the forest were shown to have distinctive neuropsychological and electrophysiological benefits, and both had beneficial effects in terms of preventing dementia and relieving related health problems for elderly individuals.
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9
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Reimann E, Abram K, Kõks S, Kingo K, Fazeli A. Identification of an optimal method for extracting RNA from human skin biopsy, using domestic pig as a model system. Sci Rep 2019; 9:20111. [PMID: 31882887 PMCID: PMC6934780 DOI: 10.1038/s41598-019-56579-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 12/13/2019] [Indexed: 11/22/2022] Open
Abstract
To evaluate skin tissue gene expression patterns correctly, extracting sufficient quantities of good quality RNA is essential. However, RNA extraction from skin tissue is challenging, as the hyaluronic acid-collagen matrix is extremely difficult to homogenize. Although there are multiple ways to extract RNA from skin, there are no comparative studies that identify the most critical steps, e.g. sample collection, storage and homogenization. We analysed the various steps involved in RNA extraction (i.e. biopsy collection as dry biopsy or into nucleotide stabilizing reagents, different storage conditions, enzymatic digestion, stator-rotor and bead motion-based homogenizing combined with column-based RNA purification). We hypothesised that domestic pig skin is applicable as a model for human skin studies. Altogether twenty different workflows were tested on pig skin and the four most promising workflows were tested on human skin samples. The optimal strategy for extracting human skin RNA was to collect, store and homogenize the sample in RLT lysis buffer from the RNeasy Fibrous Tissue Kit combined with beta-mercaptoethanol. Both stator-rotor and bead motion-based homogenizing were found to result in high quality and quantity of extracted RNA. Our results confirmed that domestic pig skin can be successfully used as a model for human skin RNA studies.
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Affiliation(s)
- Ene Reimann
- Department of Pathophysiology, University of Tartu, Tartu, Estonia.
| | - Kristi Abram
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Clinic of Dermatology, Tartu University Hospital, Tartu, Estonia
| | - Sulev Kõks
- Centre for Comparative Genomics, Murdoch University, Perth, 6150, Australia.,The Perron Institute for Neurological and Translational Science, Perth, 6009, Australia
| | - Külli Kingo
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Clinic of Dermatology, Tartu University Hospital, Tartu, Estonia
| | - Alireza Fazeli
- Department of Pathophysiology, University of Tartu, Tartu, Estonia.,Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, The Medical School, University of Sheffield, Sheffield, United Kingdom
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10
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Yi J, Ku B, Kim SG, Khil T, Lim Y, Shin M, Jeon S, Kim J, Kang B, Shin J, Kim K, Jeong AY, Park JH, Choi J, Cha W, Shin C, Shin W, Kim JU. Traditional Korean Medicine-Based Forest Therapy Programs Providing Electrophysiological Benefits for Elderly Individuals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E4325. [PMID: 31698811 PMCID: PMC6888007 DOI: 10.3390/ijerph16224325] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/25/2019] [Accepted: 10/29/2019] [Indexed: 02/01/2023]
Abstract
We aimed to develop forest therapy programs (FTPs) to prevent dementia and related health problems in the elderly population, with the assumption that health benefits are FTP-type specific and depend on the participant's psychophysiological traits. For this purpose, we developed two distinct FTPs, namely, a guided-breathing meditation program (BP) and a walking program (WP); we adopted the approach of Sasang constitutional (SC) medicine, which categorizes individuals into one of three SC types (SC1, SC2, or SC3) for medical care. The FTPs ran 11 sessions over 11 weeks. We recruited 29/31/28 participants who were 65 years of age or older for the BP/WP/control groups, respectively; obtained electrophysiological measurements via electroencephalogram (EEG), heart rate variability (HRV), and bioimpedance; and analyzed the intervention effects with analysis of covariance. Compared with the control, the BP and WP resulted in benefits for neural activity and parasympathetic nervous activity (PNA), respectively, and both FTPs yielded distinct beneficial effects on bioimpedance. Constitution-specific effects were also present. The SC1- and SC2-type participants gained positive effects in neural activity from the BP and WP, respectively. The SC3-type participants showed improvements in PNA from the WP. In conclusion, for older individuals, both programs conferred health benefits that would help prevent dementia, and the benefits were program-specific and constitution-specific.
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Affiliation(s)
- Jiyune Yi
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Boncho Ku
- Korea Institute of Oriental Medicine, Daejeon 34054, Korea
| | - Seul Gee Kim
- Korea Institute of Oriental Medicine, Daejeon 34054, Korea
| | - Taegyu Khil
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Youngsuwn Lim
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Minja Shin
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Sookja Jeon
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Jingun Kim
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Byunghoon Kang
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Jongyeon Shin
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Kahye Kim
- Korea Institute of Oriental Medicine, Daejeon 34054, Korea
| | - Ah Young Jeong
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | | | - Jungmi Choi
- Human Anti-Aging Standards Research Institute, Uiryeong, Gyungnam 52151, Korea
| | - Wonseok Cha
- Human Anti-Aging Standards Research Institute, Uiryeong, Gyungnam 52151, Korea
| | - Changseob Shin
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Wonsop Shin
- Department of Forest Therapy, Graduate School of Chungbuk National University, Chungju, Chungbuk 28644, Korea; (J.Y.); (B.K.)
| | - Jaeuk U. Kim
- Korea Institute of Oriental Medicine, Daejeon 34054, Korea
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11
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Paglietti A. Limit to steady-state aerobic power of skeletal muscles. J Biol Phys 2018; 44:619-646. [PMID: 30280281 DOI: 10.1007/s10867-018-9510-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 08/30/2018] [Indexed: 11/24/2022] Open
Abstract
Like any other kind of cell, muscle cells produce energy by oxidizing the fuel substrate that they absorb together with the needed oxygen from the surroundings. Oxidation occurs entirely within the cell. It means that the reactants and products of reaction must at some time be dissolved in the cell's cytosol. If a cell operates at steady state, its cytosol composition remains constant. Therefore, the cytosol in a muscle that produces work at steady state must contain a constant amount of fuel, oxygen, and product of reaction dissolved in it. The greater the power produced, the higher the concentration of these solutes. There is a limit, however, to the maximum amount of solutes that the cytosol can contain without damaging the cell. General thermodynamic arguments, which are reviewed in this paper, help relate this limit to the dehydration and overhydration limits of the cell. The present analysis shows that the same limits entail a limit to the maximum power that a muscle can produce at steady state. This limit depends on the composition of the fuel mixture used by the muscle. The analysis also determines the number of fuel carbon atoms that must be oxidized in parallel within a cell to produce a given power. It may well happen that a muscle cannot reach the maximum attainable power because it cannot activate all the parallel oxidation paths that are needed to produce it. This may be due to a series of reasons ranging from health issues to a lack of training. The paper shows how the methods of indirect calorimetry can provide all the experimental data needed to determine the actual number of parallel oxidation paths that at steady state must be active in a muscle in a given exercise. A diagram relating muscle power to the number of parallel oxidation paths and fuel composition is finally presented. It provides a means to assess the power capacity of animal muscles and can be applied to evaluate their fitness, stamina, margins for improvement, and athletic potential.
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Affiliation(s)
- A Paglietti
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123, Cagliari, Italy.
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Shiose K, Yamada Y, Motonaga K, Takahashi H. Muscle glycogen depletion does not alter segmental extracellular and intracellular water distribution measured using bioimpedance spectroscopy. J Appl Physiol (1985) 2018; 124:1420-1425. [PMID: 29420149 DOI: 10.1152/japplphysiol.00666.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Although each gram of glycogen is well known to bind 2.7-4.0 g of water, no studies have been conducted on the effect of muscle glycogen depletion on body water distribution. We investigated changes in extracellular and intracellular water (ECW and ICW) distribution in each body segment in muscle glycogen-depletion and glycogen-recovery condition using segmental bioimpedance spectroscopy technique (BIS). Twelve male subjects consumed 7.0 g/kg body mass of indigestible (glycogen-depleted group) or digestible (glycogen-recovered group) carbohydrate for 24 h after a glycogen-depletion cycling exercise. Muscle glycogen content using 13C-magnetic resonance spectroscopy, blood hydration status, body composition, and ECW and ICW content of the arm, trunk, and leg using BIS were measured. Muscle glycogen content at the thigh muscles decreased immediately after exercise (glycogen-depleted group, 71.6 ± 12.1 to 25.5 ± 10.1 mmol/kg wet wt; glycogen-recovered group, 76.2 ± 16.4 to 28.1 ± 16.8 mmol/kg wet wt) and recovered in the glycogen-recovered group (72.7 ± 21.2 mmol/kg wet wt) but not in the glycogen-depleted group (33.2 ± 12.6 mmol/kg wet wt) 24 h postexercise. Fat-free mass decreased in the glycogen-depleted group ( P < 0.05) but not in the glycogen-recovered group 24 h postexercise. However, no changes were observed in ECW and ICW content at the leg in both groups. Our results suggested that glycogen depletion per se does not alter body water distribution as estimated via BIS. This information is valuable in assessing body composition using BIS in athletes who show variable glycogen status during training and recovery. NEW & NOTEWORTHY Segmental bioimpedance spectroscopy analysis reveals the effect of muscle glycogen depletion on body segmental water distribution in controlled conditions. Despite the significant difference in the muscle glycogen levels at the leg, no difference was observed in body resistance and the corresponding water content of the extracellular and intracellular compartments.
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Affiliation(s)
- Keisuke Shiose
- Faculty of Sports and Health Science, Fukuoka University , Fukuoka , Japan.,Fukuoka University Institute for Physical Activity , Fukuoka , Japan.,Japan Institute of Sports Sciences , Tokyo , Japan
| | - Yosuke Yamada
- Fukuoka University Institute for Physical Activity , Fukuoka , Japan.,National Institutes of Biomedical Innovation, Health, and Nutrition, Tokyo , Japan
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Shiose K, Yamada Y, Motonaga K, Takahashi H. Circadian variation of extracellular and intracellular resistance of the leg, arm, and trunk in healthy humans: a segmental bioimpedance spectroscopy study. Biomed Phys Eng Express 2017. [DOI: 10.1088/2057-1976/aa87c0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Maughan RJ, Watson P, Shirreffs SM. Implications of active lifestyles and environmental factors for water needs and consequences of failure to meet those needs. Nutr Rev 2015; 73 Suppl 2:130-40. [DOI: 10.1093/nutrit/nuv051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Metcalfe RS, Koumanov F, Ruffino JS, Stokes KA, Holman GD, Thompson D, Vollaard NBJ. Physiological and molecular responses to an acute bout of reduced-exertion high-intensity interval training (REHIT). Eur J Appl Physiol 2015; 115:2321-34. [PMID: 26156806 DOI: 10.1007/s00421-015-3217-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 07/01/2015] [Indexed: 12/15/2022]
Abstract
PURPOSE We have previously shown that 6 weeks of reduced-exertion high-intensity interval training (REHIT) improves VO2max in sedentary men and women and insulin sensitivity in men. Here, we present two studies examining the acute physiological and molecular responses to REHIT. METHODS In Study 1, five men and six women (age: 26 ± 7 year, BMI: 23 ± 3 kg m(-2), VO2max: 51 ± 11 ml kg(-1) min(-1)) performed a single 10-min REHIT cycling session (60 W and two 20-s 'all-out' sprints), with vastus lateralis biopsies taken before and 0, 30, and 180 min post-exercise for analysis of glycogen content, phosphorylation of AMPK, p38 MAPK and ACC, and gene expression of PGC1α and GLUT4. In Study 2, eight men (21 ± 2 year; 25 ± 4 kg·m(-2); 39 ± 10 ml kg(-1) min(-1)) performed three trials (REHIT, 30-min cycling at 50 % of VO2max, and a resting control condition) in a randomised cross-over design. Expired air, venous blood samples, and subjective measures of appetite and fatigue were collected before and 0, 15, 30, and 90 min post-exercise. RESULTS Acutely, REHIT was associated with a decrease in muscle glycogen, increased ACC phosphorylation, and activation of PGC1α. When compared to aerobic exercise, changes in VO2, RER, plasma volume, and plasma lactate and ghrelin were significantly more pronounced with REHIT, whereas plasma glucose, NEFAs, PYY, and measures of appetite were unaffected. CONCLUSIONS Collectively, these data demonstrate that REHIT is associated with a pronounced disturbance of physiological homeostasis and associated activation of signalling pathways, which together may help explain previously observed adaptations once considered exclusive to aerobic exercise.
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Affiliation(s)
- R S Metcalfe
- Department for Health, University of Bath, Bath, BA2 7AY, UK
- Sport and Exercise Sciences Research Institute, School of Sport, University of Ulster, Derry, UK
| | - F Koumanov
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - J S Ruffino
- Department for Health, University of Bath, Bath, BA2 7AY, UK
| | - K A Stokes
- Department for Health, University of Bath, Bath, BA2 7AY, UK
| | - G D Holman
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - D Thompson
- Department for Health, University of Bath, Bath, BA2 7AY, UK
| | - N B J Vollaard
- Department for Health, University of Bath, Bath, BA2 7AY, UK.
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Behringer M, Montag J, Franz A, McCourt ML, Mester J, Nosaka KK. Exhaustive exercise--a near death experience for skeletal muscle cells? Med Hypotheses 2014; 83:758-65. [PMID: 25459151 DOI: 10.1016/j.mehy.2014.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 09/02/2014] [Accepted: 10/05/2014] [Indexed: 12/26/2022]
Abstract
In sports medicine, muscle enzymes in the blood are frequently used as an indicator of muscle damage. It is commonly assumed that mechanical stress disrupts plasma membrane to an extent that allows large molecules, such as enzymes, to leak into the extracellular space. However, this does not appear to fully explain changes in muscle enzyme activity in the blood after exercise. Apart from this mechanically induced membrane damage, we hypothesize that, under critical metabolic conditions, ATP consuming enzymes like creatine kinase (CK) are "volitionally" expulsed by muscle cells in order to prevent cell death. This would put themselves into a situation comparable to that of CK deficient muscle fibers, which have been shown in animal experiments to be virtually infatigable at the expense of muscle strength. Additionally we expand on this hypothesis with the idea that membrane blebbing is a way for the muscle fibers to store CK in fringe areas of the muscle fiber or to expulse CK from the cytosol by detaching the blebs from the plasma membrane. The blebbing has been shown to occur in heart muscle cells under ischaemic conditions and has been speculated to be an alternative pathway for the expulsion of troponin. The blebbing has also been seen skeletal muscle cells when intracellular calcium concentration increases. Cytoskeletal damage, induced by reactive oxygen species (ROS) or by calcium activated proteases in concert with increasing intracellular pressure, seems to provoke this type of membrane reaction. If these hypotheses are confirmed by future investigations, our current understanding of CK as a blood muscle damage marker will be fundamentally affected.
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Affiliation(s)
- Michael Behringer
- Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany.
| | - Johannes Montag
- Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany
| | - Alexander Franz
- Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany
| | - Molly L McCourt
- Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany
| | - Joachim Mester
- Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany
| | - Kazunori Ken Nosaka
- School of Exercise and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
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Brancaccio P, Limongelli FM, Paolillo I, D'Aponte A, Donnarumma V, Rastrelli L. Supplementation of Acqua Lete® (Bicarbonate Calcic Mineral Water) improves hydration status in athletes after short term anaerobic exercise. J Int Soc Sports Nutr 2012; 9:35. [PMID: 22835267 PMCID: PMC3423013 DOI: 10.1186/1550-2783-9-35] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 07/26/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Experimental studies suggest that mineral waters with high concentrations of calcium and bicarbonate can impact acid-base balance. The purpose of this study was to test the effect on acid-base balance and specific urine gravity, of a bicarbonate calcic mineral water (Acqua Lete®) compared to a minimally mineralized water. METHODS 88 amateur male athletes underwent two experimental trials with a modified Wingate test: the first was carried out without hydration (Control Test, Test C, n = 88); the second was carried out after one week of controlled hydration (Test with hydration, Test H, n = 88), with 1.5 L/day of a very low mineral content water (Group A, n = 44) or 1.5 L/day of Acqua Lete® (Group B, n = 44). Measure of body temperature, bioimpedance analysis, muscular ultrasound, and urinalysis were taken before (t0), immediately after (t1), 5' (t2), and 30' (t3) after exercise. RESULTS Hydration results in a decreased core temperature; muscular ultrasound showed increased muscle thickness after exercise related to content of body water. Regarding urinalysis, in test H, we found in both groups after exercise a significant decrease of specific urine gravity with significantly lower levels in Group B. We also found a significant increase of pH in the same Group B. CONCLUSIONS In conclusion all the athletes hydrated with Acqua Lete® showed a positive impact on hydration status after anaerobic exercise with significant decrease of specific urine gravity and a positive effect on pH.
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Affiliation(s)
- Paola Brancaccio
- Dipartimento di Scienze Farmaceutiche e Biomediche, University of Salerno, Via Ponte Don Melillo, Fisciano, Salerno, 84084, Italy.
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Neves EB, Pino AV, de Almeida RMVR, de Souza MN. Knee bioelectric impedance assessment in healthy/with osteoarthritis subjects. Physiol Meas 2009; 31:207-19. [DOI: 10.1088/0967-3334/31/2/007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pickering JD, White E, Duke AM, Steele DS. DHPR activation underlies SR Ca2+ release induced by osmotic stress in isolated rat skeletal muscle fibers. ACTA ACUST UNITED AC 2009; 133:511-24. [PMID: 19398777 PMCID: PMC2712967 DOI: 10.1085/jgp.200910191] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Changes in skeletal muscle volume induce localized sarcoplasmic reticulum (SR) Ca(2+) release (LCR) events, which are sustained for many minutes, suggesting a possible signaling role in plasticity or pathology. However, the mechanism by which cell volume influences SR Ca(2+) release is uncertain. In the present study, rat flexor digitorum brevis fibers were superfused with isoosmotic Tyrode's solution before exposure to either hyperosmotic (404 mOsm) or hypoosmotic (254 mOsm) solutions, and the effects on cell volume, membrane potential (E(m)), and intracellular Ca(2+) ([Ca(2+)](i)) were determined. To allow comparison with previous studies, solutions were made hyperosmotic by the addition of sugars or divalent cations, or they were made hypoosmotic by reducing [NaCl](o). All hyperosmotic solutions induced a sustained decrease in cell volume, which was accompanied by membrane depolarization (by 14-18 mV; n = 40) and SR Ca(2+) release. However, sugar solutions caused a global increase in [Ca(2+)](i), whereas solutions made hyperosmotic by the addition of divalent cations only induced LCR. Decreasing osmolarity induced an increase in cell volume and a negative shift in E(m) (by 15.04 +/- 1.85 mV; n = 8), whereas [Ca(2+)](i) was unaffected. However, on return to the isoosmotic solution, restoration of cell volume and E(m) was associated with LCR. Both global and localized SR Ca(2+) release were abolished by the dihydropyridine receptor inhibitor nifedipine by sustained depolarization of the sarcolemmal or by the addition of the ryanodine receptor 1 inhibitor tetracaine. Inhibitors of the Na-K-2Cl (NKCC) cotransporter markedly inhibited the depolarization associated with hyperosmotic shrinkage and the associated SR Ca(2+) release. These findings suggest (1) that the depolarization that accompanies a decrease in cell volume is the primary event leading to SR Ca(2+) release, and (2) that volume-dependent regulation of the NKCC cotransporter contributes to the observed changes in E(m). The differing effects of the osmotic agents can be explained by the screening of fixed charges by divalent ions.
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Affiliation(s)
- James D Pickering
- Institute of Membrane and Systems Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, England, UK
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Alvarenga RL, Souza MN. Estimation of the lactate threshold using bioelectrical impedance spectroscopy: a new noninvasive method. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2007; 2007:3052-5. [PMID: 18002638 DOI: 10.1109/iembs.2007.4352972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Bioelectrical Impedance Spectroscopy (BIS) is a noninvasive technology with potential application to study exercise physiology as body composition and estimation of maximal oxygen uptake. The aim of the study was to compare the power at lactate threshold (WLT) obtained using blood lactate concentration (BLC) with the power at lactate threshold from BIS (WBT). Fifty physical education students, 35 men and 15 women (age: 24.1 +/- 5.5 years; height: 168.6 +/- 24.6 cm; weight: 70.1 +/- 9.8 kg), undergoing incremental cycle ergometer test (ICET) have participated of the study. Significant correlations (p<0.05) for Pearson coefficient were found between the two methods (r = 0.96) and standard error of estimate (SEE)=5.6 W. The mean value showed 66.7+/- 20.3 W and 66.7+/- 21.1 W between the invasive technique (WLT) and noninvasive technique (WBT), respectively. The results of this study suggest that BIS, when applied with the ICET, is a valid method to estimate the power at LT.
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Affiliation(s)
- R L Alvarenga
- Biomedical Engineering Program - COPPE, Physical Education School, Federal University of Rio de Janeiro, RJ - Brazil.
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