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Harris TS, Smith AL, Boardley I. Morality- and Norm-Based Subgroups of Disability-Sport Athletes Differ on Their Anticipated Guilt and Intentions Toward Doping. Adapt Phys Activ Q 2024; 41:229-246. [PMID: 37793651 DOI: 10.1123/apaq.2023-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/07/2023] [Accepted: 08/22/2023] [Indexed: 10/06/2023] Open
Abstract
The purpose of this study was to examine whether subgroups of disability-sport athletes exist on morality- and norm-based doping cognitions and whether these groups differ in anticipated guilt or doping intentions. A survey was completed by 186 athletes (Mage = 37.5 years, 78.0% male, 45.1% wheelchair basketball) assessing norms, doping moral disengagement, anticipated guilt, and intentions to dope. Cluster analysis revealed four distinct subgroups of athletes, including one potentially high-risk subgroup characterized by relatively high scores on doping moral disengagement, subjective norms, and descriptive norms. One-way analysis of variance revealed significantly lower anticipated guilt in two athlete subgroups characterized by relatively higher doping moral disengagement than the other two subgroups. Moreover, the potentially high-risk group had a greater proportion of athletes showing some presence of intention to dope. This study suggests there is a small subgroup of disability-sport athletes at elevated risk of doping who might benefit from targeted antidoping interventions.
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Affiliation(s)
- Tyler S Harris
- Department of Kinesiology, Michigan State University, East Lansing, MI, USA
| | | | - Ian Boardley
- University of Birmingham, Birmingham, United Kingdom
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Chacon C, Nwachukwu CV, Shahsavani N, Cowley KC, Chopek JW. Lumbar V3 interneurons provide direct excitatory synaptic input onto thoracic sympathetic preganglionic neurons, linking locomotor, and autonomic spinal systems. Front Neural Circuits 2023; 17:1235181. [PMID: 37701071 PMCID: PMC10493276 DOI: 10.3389/fncir.2023.1235181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/10/2023] [Indexed: 09/14/2023] Open
Abstract
Although sympathetic autonomic systems are activated in parallel with locomotion, the neural mechanisms mediating this coordination are incompletely understood. Sympathetic preganglionic neurons (SPNs), primarily located in the intermediate laminae of thoracic and upper lumbar segments (T1-L2), increase activation of tissues and organs that provide homeostatic and metabolic support during movement and exercise. Recent evidence suggests integration between locomotor and autonomic nuclei occurs within the brainstem, initiating both descending locomotor and sympathetic activation commands. However, both locomotor and sympathetic autonomic spinal systems can be activated independent of supraspinal input, in part due to a distributed network involving propriospinal neurons. Whether an intraspinal mechanism exists to coordinate activation of these systems is unknown. We hypothesized that ascending spinal neurons located in the lumbar region provide synaptic input to thoracic SPNs. Here, we demonstrate that synaptic contacts from locomotor-related V3 interneurons (INs) are present in all thoracic laminae. Injection of an anterograde tracer into lumbar segments demonstrated that 8-20% of glutamatergic input onto SPNs originated from lumbar V3 INs and displayed a somatotopographical organization of synaptic input. Whole cell patch clamp recording in SPNs demonstrated prolonged depolarizations or action potentials in response to optical activation of either lumbar V3 INs in spinal cord preparations or in response to optical activation of V3 terminals in thoracic slice preparations. This work demonstrates a direct intraspinal connection between lumbar locomotor and thoracic sympathetic networks and suggests communication between motor and autonomic systems may be a general function of the spinal cord.
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Araneda OF, Rosales-Antequera C, Contreras-Briceño F, Tuesta M, Rossi-Serrano R, Magalhães J, Viscor G. Systemic and Pulmonary Inflammation/Oxidative Damage: Implications of General and Respiratory Muscle Training in Chronic Spinal-Cord-Injured Patients. BIOLOGY 2023; 12:828. [PMID: 37372113 DOI: 10.3390/biology12060828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
Chronic spinal cord injury affects several respiratory-function-related parameters, such as a decrease in respiratory volumes associated with weakness and a tendency to fibrosis of the perithoracic muscles, a predominance of vagal over sympathetic action inducing airway obstructions, and a difficulty in mobilizing secretions. Altogether, these changes result in both restrictive and obstructive patterns. Moreover, low pulmonary ventilation and reduced cardiovascular system functionality (low venous return and right stroke volume) will hinder adequate alveolar recruitment and low O2 diffusion, leading to a drop in peak physical performance. In addition to the functional effects described above, systemic and localized effects on this organ chronically increase oxidative damage and tissue inflammation. This narrative review describes both the deleterious effects of chronic spinal cord injury on the functional effects of the respiratory system as well as the role of oxidative damage/inflammation in this clinical context. In addition, the evidence for the effect of general and respiratory muscular training on the skeletal muscle as a possible preventive and treatment strategy for both functional effects and underlying tissue mechanisms is summarized.
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Affiliation(s)
- Oscar F Araneda
- Integrative Laboratory of Biomechanics and Physiology of Effort (LIBFE), Kinesiology School, Faculty of Medicine, Universidad de los Andes, Monseñor Álvaro del Portillo, Las Condes, Santiago 12455, Chile
| | - Cristián Rosales-Antequera
- Physical Medicine and Rehabilitation Unit, Clínica Universidad de los Andes, Santiago 8320000, Chile
- Physiology Section, Department of Cell Biology, Physiology, and Immunology, Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Felipe Contreras-Briceño
- Laboratory of Exercise Physiology, Department of Health Science, Faculty of Medicine, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna #4860, Santiago 7820436, Chile
- Millennium Institute for Intelligent Healthcare Engineering, Av. Vicuña Mackenna #4860, Santiago 7820436, Chile
| | - Marcelo Tuesta
- Exercise and Rehabilitation Sciences Institute, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago 7591538, Chile
| | - Rafael Rossi-Serrano
- Physical Medicine and Rehabilitation Unit, Clínica Universidad de los Andes, Santiago 8320000, Chile
| | - José Magalhães
- Laboratory of Metabolism and Exercise (LaMetEx), Research Centre in Physical Activity, Health and Leisure (CIAFEL), Laboratory for Integrative and Translational Research in Population Health (ITR), Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Ginés Viscor
- Physiology Section, Department of Cell Biology, Physiology, and Immunology, Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
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Martín-Manjarrés S, Leal-Martín J, Granados C, Mata E, Gil-Agudo Á, Rodríguez-Gómez I, Ara I. Fat Oxidation during Exercise in People with Spinal Cord Injury, and Protocols Used: A Systematic Review. Healthcare (Basel) 2022; 10:healthcare10122402. [PMID: 36553926 PMCID: PMC9778437 DOI: 10.3390/healthcare10122402] [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: 10/18/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND The aim of this study was to summarize evidence on energy metabolism through peak fat oxidation (PFO) and maximum fat oxidation (Fatmax), as well as to analyze the protocols used in people with spinal cord injury (SCI) and to examine the main factors related to fat oxidation ability (i.e., age, sex, level of physical activity, and level and degree of injury). METHODS Studies to determine PFO and Fatmax using indirect calorimetry with an arm exercise protocol for SCI patients were included after a systematic search. Other endpoints included study design, sample size, control group, demographic data, level of injury, physical condition, protocol, outcomes measured, and statistical findings. RESULTS Eight studies (n = 560) were included. The mean value of VO2peak was 1.86 L∙min-1 (range 0.75-2.60 L∙min-1) (lowest value in the tetraplegic subjects). The PFO ranged between 0.06 and 0.30 g∙min-1 (lowest rates: the non-trained subjects with cervical SCI; highest: the tetraplegic subjects). Two types of exercise protocol were found: arm cycle ergometer, and wheelchair propulsion with a computerized ergometer. Five studies used an incremental protocol (2-3 min/stage, different load increments); the rest performed tests of 20 min/stage at three intensities. CONCLUSION There are few existing studies measuring fat oxidation in SCI, many of which used small and heterogeneous samples. PFO was lower in SCI subjects when compared with non-injured people performing lower-limb exercise; however, comparing upper-limb exercise, people with SCI showed higher values.
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Affiliation(s)
- Soraya Martín-Manjarrés
- Hospital Nacional de Parapléjicos, SESCAM, 45004 Toledo, Spain
- GENUD-Toledo Research Group, Universidad de Castilla-La Mancha, 45071 Toledo, Spain
| | - Javier Leal-Martín
- GENUD-Toledo Research Group, Universidad de Castilla-La Mancha, 45071 Toledo, Spain
- CIBER on Frailty and Healthy Aging, Instituto de Salud Carlos III (CIBERFES, ISCIII), 28029 Madrid, Spain
| | - Cristina Granados
- Departamento de Educación Física y Deporte, Facultad de Educación y Deporte, Universidad del País Vasco (UPV/EHU), 01007 Vitoria, Spain
| | - Esmeralda Mata
- Facultad Ciencias del Deporte, Universidad de Castilla-La Mancha, 45071 Toledo, Spain
| | - Ángel Gil-Agudo
- Departamento de Medicina Física y Rehabilitación, Hospital Nacional de Parapléjicos, SESCAM, 45004 Toledo, Spain
| | - Irene Rodríguez-Gómez
- GENUD-Toledo Research Group, Universidad de Castilla-La Mancha, 45071 Toledo, Spain
- CIBER on Frailty and Healthy Aging, Instituto de Salud Carlos III (CIBERFES, ISCIII), 28029 Madrid, Spain
- Correspondence: ; Tel.: +34-925-268-800 (ext. 96808)
| | - Ignacio Ara
- GENUD-Toledo Research Group, Universidad de Castilla-La Mancha, 45071 Toledo, Spain
- CIBER on Frailty and Healthy Aging, Instituto de Salud Carlos III (CIBERFES, ISCIII), 28029 Madrid, Spain
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Validity of a Wheelchair Rugby Field Test to Simulate Physiological and Thermoregulatory Match Outcomes. Sports (Basel) 2022; 10:sports10100144. [PMID: 36287757 PMCID: PMC9609776 DOI: 10.3390/sports10100144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/21/2022] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
The purpose of the study was to verify the criterion-validity (concurrent) of an existing and reliable, submaximal wheelchair Rugby (WCR) field test by examining the correlations of selected measures of physical performance between the field test and real games. Therefore, ten WCR athletes were observed during two WCR real games and during completing the field test two times. Total distance, mean and peak velocity, playing time, number of sprints, sprints per minute, mean and maximal heart rate, body core temperature (Tc), sweat rate, body weight loss, rate of perceived exertion and thermal sensation were measured. Values were correlated with the data observed by completing the field test two times separated by seven days. The results showed significant correlations between games and field tests for sweat rate (r = 0.740, p < 0.001), body weight loss (r = 0.732, p < 0.001) and the increase of Tc (r = 0.611, p = 0.009). All other correlations were not significant. For perceptual responses Bland−Altman analysis showed data within the limits of agreement. Descriptive statistics showed similarity for mean velocity and total distance between tests and games. In conclusion the study provides the first indications that the submaximal field test seems comparable with the game outcomes in terms of increase in Tc, covered distance, mean velocity and perceptual responses. Nevertheless, more research and additional validation are required.
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EVALUATION OF PHYSICAL ACTIVITY LEVELS, SLEEP QUALITY AND NUTRITIONAL HABITS OF PARAATHLETES DURING THE PANDEMIC PROCESS. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2022. [DOI: 10.30621/jbachs.1161671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Background: Cancellation or postponement of sports organizations due to the Covid 19 pandemic has caused great stress for athletes. There are limited studies on how physical activity levels, nutritional habits and sleep quality are affected, especially in physically disabled athletes(paraathletes) during the pandemic process.
Purpose: the aim of the research is to examine the physical activity, nutritional habits and sleep quality levels of paraathletes during the pandemic process.
Method: Eighty- seven male paraathletes were included in the study. The personal data form required to determine the characteristics within the study subject International Physical Activity Questionnaire Short Form (IPAQ Short Form), the Pittsburg Sleep Quality Index Questionnaire were used in a way consistent with the study. In addition to these sections, changes in participants' nutritional habits were questioned.
Results: Total MET values of paraathletes were determined as 3233 ± 1421. The sleep quality index total score averages of the participants were 5.83 ± 0.80 points, indicating the level of 'poor sleep quality'. Food consumption of the participants It was found that 56% of them increased their food consumption, 28% did not change, and 18% decreased.
Conclusion: The results of the study showed that physical activity, nutrition and sleep processes, which have an important place in the life cycle of paraathletes, were adversely affected during the pandemic process.
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Psychosocial aspects of sports medicine in pediatric athletes: Current concepts in the 21 st century. Dis Mon 2022:101482. [PMID: 36100481 DOI: 10.1016/j.disamonth.2022.101482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Behavioral aspects of organized sports activity for pediatric athletes are considered in a world consumed with winning at all costs. In the first part of this treatise, we deal with a number of themes faced by our children in their sports play. These concepts include the lure of sports, sports attrition, the mental health of pediatric athletes (i.e., effects of stress, anxiety, depression, suicide in athletes, ADHD and stimulants, coping with injuries, drug use, and eating disorders), violence in sports (i.e., concepts of the abused athlete including sexual abuse), dealing with supervisors (i.e., coaches, parents), peers, the talented athlete, early sports specialization and sports clubs. In the second part of this discussion, we cover ergolytic agents consumed by young athletes in attempts to win at all costs. Sports doping agents covered include anabolic steroids (anabolic-androgenic steroids or AAS), androstenedione, dehydroepiandrostenedione (DHEA), human growth hormone (hGH; also its human recombinant homologue: rhGH), clenbuterol, creatine, gamma hydroxybutyrate (GHB), amphetamines, caffeine and ephedrine. Also considered are blood doping that includes erythropoietin (EPO) and concepts of gene doping. In the last section of this discussion, we look at disabled pediatric athletes that include such concepts as athletes with spinal cord injuries (SCIs), myelomeningocele, cerebral palsy, wheelchair athletes, and amputee athletes; also covered are pediatric athletes with visual impairment, deafness, and those with intellectual disability including Down syndrome. In addition, concepts of autonomic dysreflexia, boosting and atlantoaxial instability are emphasized. We conclude that clinicians and society should protect our precious pediatric athletes who face many challenges in their involvement with organized sports in a world obsessed with winning. There is much we can do to help our young athletes find benefit from sports play while avoiding or blunting negative consequences of organized sport activities.
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Fluid Balance and Thermoregulatory Responses during Wheelchair Basketball Games in Hot vs. Temperate Conditions. Nutrients 2022; 14:nu14142930. [PMID: 35889887 PMCID: PMC9319276 DOI: 10.3390/nu14142930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/13/2022] [Accepted: 07/15/2022] [Indexed: 02/06/2023] Open
Abstract
The impaired vaso- and sudomotor functions limit sweat capacity in individuals with a spinal cord injury (SCI) and might increase the risk for heat-related illness and decreased performance, especially in hot conditions (HOT). This study investigated the differences in fluid balance and thermal responses between wheelchair basketball (WCB) games in HOT and temperate conditions (TMP). Eleven male WCB athletes (39.8 y, 82.8 kg) with SCI (lesion level C5-L4) participated, five in HOT (31 °C) and eight in TMP games (21 °C). Fluid balance, sweat rate, body core temperature, distance, velocity and thermal sensation were assessed. The relative change in body mass was higher in the HOT group (median: −0.35%, interquartile-range: 0.15%, p = 0.02) compared to TMP (+0.11%, 0.35%) group. The sweat rate was significantly higher in the HOT group (0.93 L/h, 0.58 L/h, p = 0.02) compared to the TMP groups (0.48 L/h, 0.19 L/h). Body core temperature increased significantly higher in the TMP group (1.05 °C, 0.15 °C, p = 0.01) compared to the HOT group (0.8 °C, 0.4 °C). The mean velocity (HOT: 1.12 m/s, 0.11 m/s, TMP: 1.07 m/s, 0.08 m/s, p = 0.54) did not differ between the games. The WCB game in HOT leads to significantly higher sweat rate and loss in body mass compared to TMP. Even relative body mass loss was less than 2%. Athletes thus have to be supported with enough fluid, especially during games in HOT.
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Jacinto M, Monteiro D, Matos R, Antunes R. Gold Medals, Silver Medals, Bronze Medals, and Total Medals: An Analysis of Summer Paralympic Games from 1992 to 2016. Healthcare (Basel) 2022; 10:healthcare10071289. [PMID: 35885815 PMCID: PMC9319078 DOI: 10.3390/healthcare10071289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 11/18/2022] Open
Abstract
The Paralympic Games (PG) are considered one of the biggest events in the world, with increasing coverage by media and participation. The present study aimed to investigate the variation in the number of gold, silver, bronze, and totals medals in the Summer PG from 1992 to 2016. Data related to the results were extracted from the International Paralympic Committee to an SPSS database. Descriptive statistics and Friedman’s two-way analysis of variance by ranks were used to check the differences across medals in seven editions of the Summer PG, with the correspondent effect sizes. There was a peak in the maximum number of any type of medal between the 1996 and 2000 Summer PG and a decrease until 2008. After that, the number of any kind of medals has been increasing again. There were also significant differences with intermediate to large effect sizes when comparing more distant PG with more recent events. Several external factors can influence performance indicators (e.g., the number of medals) in a negative or positive way. An increase in the number of participants and a greater and better investment by the countries may explain part of our results. The preparation of an athlete must be based on a multidisciplinary team, and future organizing countries must take into account reports of previous events.
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Affiliation(s)
- Miguel Jacinto
- Faculty of Sport Sciences and Physical Education, University of Coimbra, 3004-531 Coimbra, Portugal;
- Life Quality Research Centre (CIEQV), 2411-901 Leiria, Portugal; (D.M.); (R.M.)
| | - Diogo Monteiro
- Life Quality Research Centre (CIEQV), 2411-901 Leiria, Portugal; (D.M.); (R.M.)
- ESECS—Polytechnic of Leiria, 2411-901 Leiria, Portugal
- Research Center in Sport Sciences, Health Sciences and Human Development (CIDESD), 5001-801 Vila Real, Portugal
| | - Rui Matos
- Life Quality Research Centre (CIEQV), 2411-901 Leiria, Portugal; (D.M.); (R.M.)
- ESECS—Polytechnic of Leiria, 2411-901 Leiria, Portugal
| | - Raul Antunes
- Life Quality Research Centre (CIEQV), 2411-901 Leiria, Portugal; (D.M.); (R.M.)
- ESECS—Polytechnic of Leiria, 2411-901 Leiria, Portugal
- Center for Innovative Care and Health Technology (ciTechCare), Polytechnic of Leiria, 2411-901 Leiria, Portugal
- Correspondence: ; Tel.: +351-244-829-400
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Effects of trunk muscle activation on trunk stability, arm power, blood pressure and performance in wheelchair rugby players with a spinal cord injury. J Spinal Cord Med 2022; 45:605-613. [PMID: 33166206 PMCID: PMC9246102 DOI: 10.1080/10790268.2020.1830249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective: In wheelchair rugby (WR) athletes with tetraplegia, wheelchair performance may be impaired due to (partial) loss of innervation of upper extremity and trunk muscles, and low blood pressure (BP). The objective was to assess the effects of electrical stimulation (ES)-induced co-contraction of trunk muscles on trunk stability, arm force/power, BP, and WR performance.Design: Cross-sectional study.Setting: Rehabilitation research laboratory and WR court.Participants: Eleven WR athletes with tetraplegia.Interventions: ES was applied to the rectus abdominis, obliquus externus abdominis and erector spinae muscles. For every test, the ES condition was compared to the non-ES condition.Outcome measures: Stability was assessed with reaching tasks, arm force/power with an isokinetic test on a dynamometer, BP during an ES protocol and WR skill performance with the USA Wheelchair Rugby Skill Assessment.Results: Overall reaching distance (ES 14.6 ± 7.5 cm, non-ES 13.4 ± 8.2 cm), and BP showed a significant increase with ES. Arm force (ES 154 ± 106 N, non-ES 148 ± 102 N) and power (ES 37 ± 26 W, non-ES 36 ± 25 W), and WR skills were not significantly improved.Conclusion: ES-induced trunk muscle activation positively affects trunk stability and BP, but not arm force/power. No effects were found in WR skill performance, probably due to abdominal strapping. More research is needed to assess different ES (training) protocols and longitudinal effects.
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Effect of Manual Wheelchair Type on Mobility Performance, Cardiorespiratory Responses, and Perceived Exertion. Rehabil Res Pract 2022; 2022:5554571. [PMID: 35726217 PMCID: PMC9206577 DOI: 10.1155/2022/5554571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/08/2022] [Accepted: 04/16/2022] [Indexed: 11/24/2022] Open
Abstract
This study is aimed at comparing the design and configuration of the most commonly used manual wheelchair models through cardiorespiratory responses, perceived exertion, and mobility performance using two different manual wheelchairs, during mobility tasks. A within-group 2 × 3 × 2 controlled experiment was designed with three independent and four dependent variables. The independent variables included wheelchairs, with the levels active wheelchair with a rigid frame and passive wheelchair with foldable frame; conditions with the levels straight line, slalom, and agility; and speed with levels comfortable and fast. Dependent variables included oxygen uptake (VO2), distance travelled, speed, and perceived exertion. Results show that the active wheelchair yielded more beneficial characteristics although only the effect of wheelchair type on VO2 efficiency (oxygen uptake per meter travelled) was statistically significant with a large effect size (F(1, 14) = 118.298, p < 0.001, η2 = 0.541). The better VO2 efficiency was achieved with the active wheelchair under all tested conditions. The effect of wheelchair type on Borg scores was also statistically significant, although with a small effect size (F(1, 14) = 10.340, p = 0.006, η2 = 0.119); thus, active wheelchair use had lower Borg scores under all trials and was considered less exhausting than the passive wheelchair. In summary, use of the active wheelchair resulted in the users expending less energy per meter travelled and at the same time experiencing less fatigue. This may benefit overall wheelchair mobility and possibly reduce health complications.
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Handcycling Training in Men with Spinal Cord Injury Increases Tolerance to High Intensity Exercise. J Hum Kinet 2022; 82:233-241. [PMID: 36196357 PMCID: PMC9465718 DOI: 10.2478/hukin-2022-0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Individuals with spinal cord injury are characterised by reduced physical capacity as compared to able-bodied persons, and are at risk of developing cardiovascular disease. The study aimed to evaluate the differences in physiological responses to an exercise test in handcycling-trained vs. able-bodied-trained and non-trained men. Eight males with spinal cord injury who were trained in handcycling, eighteen able-bodied males who were trained in powerlifting, and fourteen physically active non-athletes performed a graded arm crank ergometer test. The following physiological indices were measured before and during the test: heart rate, oxygen uptake, and blood lactate concentrations. Aerobic capacity was significantly higher in athletes with spinal cord injury compared to able-bodied athletes (p<0.01) and the control group (p<0.01). The heart rate achieved by handcycling-trained athletes was significantly lower as compared to powerlifters (p<0.01), however, the oxygen pulse was significantly higher (p<0.05). Handcycling-trained athletes reached significantly higher peak power (Pmax) during the graded arm exercise in comparison with powerlifters, and significantly higher post exercise blood lactate concentration (p<0.05). The lactate threshold was observed at a significantly higher P in individuals with spinal cord injury compared to able-bodied-trained (p<0.05) and non-trained men (p<0.001). Athletes with spinal cord injury were found to have excellent aerobic capacity and better physiological adaptation to the maximal graded exercise test as compared to able-bodied-trained men. These findings emphasize the importance of regular physical exercise and its potential therapeutic role in the prevention of cardiovascular disease in patients with spinal cord injury.
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The ability of heart rate or perceived exertion to predict oxygen uptake varies across exercise modes in persons with tetraplegia. Spinal Cord 2021; 59:1247-1255. [PMID: 34462547 DOI: 10.1038/s41393-021-00670-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 05/14/2021] [Accepted: 07/02/2021] [Indexed: 11/08/2022]
Abstract
STUDY DESIGN Descriptive study. OBJECTIVES To examine grouped and intra-individual relationships between 1) exercise intensity and heart rate (EI-HR); 2) EI and oxygen uptake (EI-VO2); 3) VO2 and HR (VO2-HR); and 4) perceived exertion and VO2 (PE-VO2) in persons with tetraplegia (C4/5-C8) during different modes of exercise. SETTING Community in Winnipeg, Canada. METHODS Participants exercised at 3 graded intensities during arm ergometry (ERG), wheeling indoors on cement (MWC), or hand-cycling outdoors (HC). EI (Watts, km/hr) and VO2, HR and PE were recorded. RESULTS 22 persons completed ERG, 14/22 also completed MWC and 5/22 completed ERG, MWC and HC. Regression analysis of grouped data showed a significant relationship between EI-VO2 but not for EI-HR or HR-VO2. Intra-individual analyses showed a strong correlation (r or ρ > 0.7) for VO2-HR for 16/22 during ERG. In the participants completing multiple exercise modes, a strong VO2-HR relationship was present in 12/14 in ERG, but in only 6/14 in MWC. The 5 persons exercising with all 3 modes had a strong HR-VO2 relationship in 5/5 for ERG, 2/5 in MWC and 1/5 in HC. A strong relationship for PE-VO2 was observed in a higher proportion of participants (versus HR-VO2) during MWC (9/14) and HC (2/4). CONCLUSION Within the same individual, the HR-VO2 relationship varies across modes, despite exercising over similar ranges of steady-state VO2. HR appears less able to predict VO2 compared to PE. Based on these new findings, systematic investigation of the HR-VO2 relationship across modes of exercise in tetraplegia is warranted.
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Aerobic fitness is a potential crucial factor in protecting paralympic athletes with locomotor impairments from atherosclerotic cardiovascular risk. SPORT SCIENCES FOR HEALTH 2021. [DOI: 10.1007/s11332-020-00698-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract
Purpose
To test the hypothesis that aerobic fitness is inversely related to the risk of atherosclerotic cardiovascular disease (ACVD) in athletes with locomotor impairments deriving from health conditions, such as spinal cord injury (SCI), lower limb amputation, cerebral palsy, poliomyelitis, and other health conditions different from the previous ones.
Methods
A total of 68 male athletes who competed in either summer or winter Paralympic games were divided in two health conditions groups (35 with SCI, mean age 37.2 ± 8.0 years, and 33 with different health conditions, mean age 37.8 ± 9.9 years) and in four sport type groups (skill, power, intermittent—mixed metabolism—and endurance). They were evaluated through anthropometric and blood pressure measurements, laboratory blood tests, and graded cardiopulmonary maximal arm cranking exercise test, with oxygen uptake peak (VO2peak) measurement. Cardiovascular risk profile was assessed in each athlete.
Results
The prevalence of ACVD-risk factors in the overall population was 20.6% for hypertension; 47% and 55.9% for high values of total and LDL cholesterol, respectively; 22.1% for reduce glucose tolerance; and 8.8% for obesity. No difference was found between athletes with and without SCI, while the prevalence of obesity was significantly higher in those practicing skill sports (22.7%, p = 0.035), which was the sport type group with Paralympic athletes with the lowest VO2peak (22.5 ± 5.70 ml kg−1 min−1). VO2peak was lower in athletes with SCI than those with different health conditions (28.6 ± 10.0 vs 33.6 ± 8.9 ml kg−1 min−1p = 0.03), and in those with 3–4 risk factors (19.09 ± 5.34 ml kg−1 min−1) than those with 2 risk factors (27.1 ± 5.50 ml kg−1 min−1), 1 risk factor (31.6 ± 8.55 ml kg−1 min−1), or none (36.4 ± 8.76 ml kg−1 min−1) (p < 0.001).
Conclusions
The present study suggests that having higher VO2peak seems to offer greater protection against ACVD in individuals with a locomotor impairment. Prescribing physical exercise at an intensity similar to that of endurance and intermittent sports should become a fundamental tool to promote health among people with a locomotor impairment.
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15
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Flueck JL, Parnell JA. Protein Considerations for Athletes With a Spinal Cord Injury. Front Nutr 2021; 8:652441. [PMID: 33928111 PMCID: PMC8076503 DOI: 10.3389/fnut.2021.652441] [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: 01/12/2021] [Accepted: 03/05/2021] [Indexed: 11/24/2022] Open
Abstract
Athlete participation in the Paralympic games is steadily increasing; prompting research focused on the unique needs of this population. While the Paralympic Games includes a diversity of athletes, athletes with a spinal cord injury (PARA-SCI) represent a subgroup that requires specialized recommendations. Nutritional guidelines designed to optimize performance, in the context of the neurological impairments, are required. This narrative review summarizes the current literature regarding the importance of dietary protein for optimal health and performance. Factors with the potential to affect protein needs in PARA-SCI including loss of active muscle mass, reduced energy expenditure, and secondary complications are examined in detail. Furthermore, we analyze protein intakes in PARA-SCI from the available research to provide context around current practices and trends. In conclusion, we make the case that protein recommendations for able-bodied athletes may not be directly transferable to PARA-SCI. Consequently, PARA-SCI need their own guidelines to maximize performance and ensure long-term health.
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Affiliation(s)
| | - Jill A Parnell
- Department of Health and Physical Education, Mount Royal University, Calgary, AB, Canada
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16
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De Lira CA, Andrade MS, Oliveira HR, Vancini RL. Brazilian Paralympic athletes arouse pride, but reveal important social problems in Brazil. J Sports Med Phys Fitness 2020; 60:1410-1411. [PMID: 33153257 DOI: 10.23736/s0022-4707.20.11283-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Claudio A De Lira
- Exercise and Human Physiology Division, Human Movement Assessment Laboratory, Faculty of Physical Education and Dance, Federal University of Goiás, Goiânia, Brazil -
| | - Marília S Andrade
- Departament of Phisiology, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Hudson R Oliveira
- Center of Physical Education and Sports, Federal University of Espiritu Santo, Vitoria, Brazil
| | - Rodrigo L Vancini
- Center of Physical Education and Sports, Federal University of Espiritu Santo, Vitoria, Brazil
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17
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Personalized Tests in Paralympic Athletes: Aerobic and Anaerobic Performance Profile of Elite Wheelchair Rugby Players. J Pers Med 2020; 10:jpm10030118. [PMID: 32916810 PMCID: PMC7563775 DOI: 10.3390/jpm10030118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/26/2020] [Accepted: 09/01/2020] [Indexed: 11/24/2022] Open
Abstract
In Paralympic sports, the goal of functional classifications is to minimize the impact of impairment on the outcome of the competition. The present cross-sectional study aimed to investigate aerobic and anaerobic personalized tests in Paralympic athletes and to correlate them with the classification of the international wheelchair rugby federation (IWRF). Sixteen elite players of the Italian wheelchair rugby team volunteered for the study. Aerobic (incremental test to exhaustion) and anaerobic (Wingate 30s all-out test, 5 and 10-meter sprint test, shuttle test, isometric test) sport-performance measurements were correlated singularly or grouped (Z scores) with the classification point. Moreover, a multivariate permutation-based ranking analysis investigated possible differences in the overall level of performance among the adjacent classified groups of players, considering the scores of each test. A statistically significant correlation between the performance parameters and the IWRF functional classification considering both aerobic and anaerobic personalized tests was detected (0.58 ≤ r ≤ 0.88; 0.0260 ≤ p ≤ 0.0001). The multivariate permutation-based ranking analysis showed differences only for the low-pointers versus mid-pointers (p = 0.0195) and high-pointers (p = 0.0075). Although single performance parameters correlated with athletes’ classification point, results of the multivariate permutation-based ranking analysis seem to suggest considering only the most significant anaerobic and sport-specific performance parameters among athletes. These should be combined with the physical assessment and the qualitative observation, which are already part of the classification process to improve its effectiveness.
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18
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Perret C, Van Biesen D, Strupler M, Pit-Grosheide P, Vanlandewijck Y. Effect of Sildenafil Citrate on Exercise Capacity in Athletes With Spinal Cord Injury. Int J Sports Physiol Perform 2020; 15:971-975. [PMID: 32176866 DOI: 10.1123/ijspp.2019-0421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 10/16/2019] [Accepted: 10/16/2019] [Indexed: 10/27/2023]
Abstract
PURPOSE Ingestion of sildenafil citrate has performance-enhancing effects at high altitudes above 3800 m in able-bodied individuals. It is unknown whether it can improve the performance of athletes with spinal cord injury (SCI) at moderate altitudes (<2200 m), relevant to Paralympic competitions. As most men with SCI suffer from erectile dysfunction of neurologic origin and use sildenafil on a regular basis, it seems important to study the impact of sildenafil on exercise capacity. The outcome of this study is also relevant to the antidoping community. METHODS Twenty-seven healthy male wheelchair athletes with a motor-complete SCI participated in this prospective double-blind, randomized, placebo-controlled study. The participants performed arm cranking exercise to exhaustion at sea level and moderate altitude (2200 m) after ingestion of 50 mg sildenafil citrate or a placebo. Peak power output, peak oxygen uptake, peak heart rate, rating of perceived exertion, oxygen saturation, and lactate concentrations at exhaustion were measured. RESULTS Friedman analysis showed that peak power output at sea level was significantly higher (P = .004) under placebo treatment (median [minimum; maximum]: 120 W [35; 170]) compared with sildenafil (115 W [40; 165]). Blood oxygen saturation under sildenafil treatment at sea level (98% [81; 100]) was significantly higher (P = .006) compared with sildenafil treatment at moderate altitude (94% [85; 100]). All other parameters revealed no impact of sildenafil or altitude. CONCLUSIONS In this study, the ingestion of sildenafil citrate in athletes with SCI demonstrated no positive effects on peak arm-cranking-exercise capacity compared with placebo either at sea level or at moderate altitude.
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Suresh S, Duerstock BS. Automated Detection of Symptomatic Autonomic Dysreflexia Through Multimodal Sensing. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2020; 8:2800108. [PMID: 32082953 PMCID: PMC7028437 DOI: 10.1109/jtehm.2019.2955947] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/08/2019] [Accepted: 11/17/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Autonomic Dysreflexia (AD) is a potentially life-threatening syndrome which occurs in individuals with higher level spinal cord injuries (SCI). AD is caused by triggers which can lead to rapid escalation of pathophysiological responses and if the trigger is not removed, AD can be fatal. There is currently no objective, non-invasive and accurate monitoring system available to automatically detect the onset of AD symptoms in real time in a non-clinical setting. Technology or Method: We developed a user-independent method of symptomatic AD detection in real time with a wearable physiological telemetry system (PTS) and a machine learning model using data from eleven participants with SCI. RESULTS The PTS could detect onset of AD symptoms with an average accuracy of 94.10% and a false negative rate of 4.89%. CONCLUSIONS The PTS can detect the onset of the symptoms AD with high sensitivity and specificity to assist people with SCIs in preventing the occurrence of AD. It would enable persons with high level SCIs to be more independent and pursue vocational activities while granting continuous medical oversight. Clinical Impact: The PTS could serve as a supplementary tool to current solutions to detect the onset of AD and prepare individuals who are newly injured to be better prepared for AD episodes. Moreover, it could be translated into a system to encourage individuals to practice better healthcare management to prevent future occurrences.
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Affiliation(s)
- Shruthi Suresh
- Weldon School of Biomedical EngineeringPurdue UniversityWest LafayetteIN47907USA
| | - Bradley S. Duerstock
- Weldon School of Biomedical EngineeringPurdue UniversityWest LafayetteIN47907USA
- School of Industrial EngineeringPurdue UniversityWest LafayetteIN47907USA
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20
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Bernardi M, Guerra E, Rodio A, Dante D, Castellano V, Peluso I, Schena F, Bhambhani Y. Assessment of Exercise Stroke Volume and Its Prediction From Oxygen Pulse in Paralympic Athletes With Locomotor Impairments: Cardiac Long-Term Adaptations Are Possible. Front Physiol 2020; 10:1451. [PMID: 32218739 PMCID: PMC7079670 DOI: 10.3389/fphys.2019.01451] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 11/08/2019] [Indexed: 12/17/2022] Open
Abstract
The determinants of cardiac output (CO) during exercise, i.e., stroke volume (SV) and heart rate (HR), could differ in Paralympic athletes (PAthl) with spinal cord injury (SCI) with respect to PAthl with locomotor impairments caused by different health conditions (HCs). The purposes of the present study were the comparisons of two groups of PAthl, one with SCI and the other with either amputation (AMP) or post poliomyelitis syndrome (PM), assessing the (1) peak cardiorespiratory responses and determinants (SV and HR) of CO during maximal and submaximal arm cranking exercise (ACE), respectively; (2) correlations between peak oxygen uptake (VO2peak) and the highest SV obtained during submaximal exercise; and (3) correlations between oxygen pulse (O2 pulse, ratio between VO2 and HR) and both SV and O2 arterio-venous difference [(a-v)O2diff]. Each athlete (19 PAthl with SCI, 9 with AMP, and 5 with PM) completed a continuous incremental cardiopulmonary ACE test to volitional fatigue to assess peak responses. In a different session, CO was indirectly measured through carbon dioxide (CO2) rebreathing method at sub-maximal exercise intensities approximating 30, 50, and 70% of the VO2peak. There were no significant differences between the PAthl groups in age, anthropometry, and VO2peak. However, peak HR was significantly lower, and peak O2 pulse was significantly higher in PAthl with AMP/PM compared to those with SCI. During sub-maximal exercise, PAthl with AMP/PM displayed significantly higher SV values (154.8 ± 17.60 ml) than PAthl with SCI (117.1 ± 24.66 ml). SV correlated significantly with VO2peak in both PAthl with SCI (R 2 = 0.796) and AMP/PM (R 2 = 0.824). O2 pulse correlated significantly with SV in both PAthl with SCI (R 2 = 0.888) and AMP/PM (R 2 = 0.932) and in the overall sample (R 2 = 0.896). No significant correlations were observed between O2 pulse and (a-v)O2diff. It was concluded that in PAthl with different HCs: (1) significant differences, as a consequence of the different HC, exist in the determinants of CO at maximal and submaximal ACE; (2) SV is a significant determinant of VO2peak, suggesting cardiac adaptations possible also in PAthl with SCI; and (3) SV can be predicted from O2 pulse measurements during submaximal exercise in both groups of PAthl.
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Affiliation(s)
- Marco Bernardi
- Department of Physiology and Pharmacology, Faculty of Pharmacy and Medicine, Sapienza University of Rome, Rome, Italy.,Italian Paralympic Committee, Rome, Italy
| | - Emanuele Guerra
- Sports Medicine Service, Local Health Unit of Modena, Modena, Italy
| | - Angelo Rodio
- Department of Human, Social and Health Sciences, University of Cassino, Cassino, Italy
| | - Donatella Dante
- Department of Physiology and Pharmacology, Faculty of Pharmacy and Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Ilaria Peluso
- Research Centre for Food and Nutrition, Council for Agricultural Research and Economics (CREA-AN), Rome, Italy
| | - Federico Schena
- Department of Neuroscience, Biomedicine, and Movement Sciences, University of Verona, Verona, Italy
| | - Yagesh Bhambhani
- Department of Occupational Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
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21
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Stangier C, Abel T, Zeller S, Quittmann OJ, Perret C, Strüder HK. Comparison of Different Blood Lactate Threshold Concepts for Constant Load Performance Prediction in Spinal Cord Injured Handcyclists. Front Physiol 2019; 10:1054. [PMID: 31611803 PMCID: PMC6777042 DOI: 10.3389/fphys.2019.01054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 08/02/2019] [Indexed: 11/20/2022] Open
Abstract
Background Endurance capacity is one of the main performance determinants in handcycling. There are two exercise test procedures primarily applied to determine endurance capacity, to verify training adaptations and predict race performance. This study aims to evaluate the agreement of these applied concepts in handcycling. Methods In a repeated measures cross-over design, 11 highly trained male spinal cord injured (Th12 to L1) handcyclists (age: 40 ± 9 years, height: 183 ± 8 cm, body mass: 73.2 ± 8.5 kg) performed a graded exercise test (GXT) and a lactate minimum test (LMT) to determine lactate threshold at 4 mmol L–1 (LT4 mmol L−1) and lactate minimum (LM), respectively. The agreement of both lactate thresholds concepts for constant load performance prediction (change of ≤ 1 mmol L–1 during the last 20 min) was evaluated within constant load tests (CLT; 30 min) at a power output (PO) corresponding to LT4 mmol L–1 and LM. Oxygen uptake (V.O2), respiratory exchange ratio (RER), heart rate (HR) and blood lactate (La) were measured during all tests. Results Power output at the corresponding thresholds (LT4 mmol L−1: 149 ± 34 W vs. LM: 137 ± 18 W) revealed no significant difference (p = 0.06). During the CLT at LT4 mmol⋅L−1 and LM, V.O2, and RPE were not significantly different. However, LA, RER, and HR were significantly higher (p ≤ 0.02) during CLT at LT4 mmol L−1. Bland–Altman plots indicate a wide range of dispersion for all parameters between both lactate threshold concepts. Evaluations of LT4 mmol L−1 and LM did not meet the criteria for constant load performance within the CLT for 33 and 17% of the athletes, respectively. Discussion Both exercise tests and the corresponding lactate threshold concept revealed appropriate estimates to predict a steady state performance for the majority of participants. However, as PO determination at LT4 mmol L−1 and LM exceeds the criteria for constant load performance (increase of ≥ 1 mmol L–1) for 33 and 17% respectively the current results indicate the common criteria for constant load performance (change of ± 1 mmol L–1) might not be sufficiently precise for elite athletes in handcycling. Consequently, exercise test results of elite athletes should be analyzed individually and verified by means of several CLT.
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Affiliation(s)
- Carolin Stangier
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - Thomas Abel
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany.,European Research Group in Disability Sport, Cologne, Germany
| | - Sebastian Zeller
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - Oliver Jan Quittmann
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - Claudio Perret
- European Research Group in Disability Sport, Cologne, Germany.,Institute of Sports Medicine, Swiss Paraplegic Centre, Nottwil, Switzerland
| | - Heiko K Strüder
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
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22
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Vancini RL, Gomes AA, de Paula-Oliveira H, de Lira C, Rufo-Tavares W, Andrade MS, Sarro KJ, Sampaio MM, Viana RB, Nikolaidis PT, Rosemann T, Knechtle B. Quality of Life, Depression, Anxiety Symptoms and Mood State of Wheelchair Athletes and Non-athletes: A Preliminary Study. Front Psychol 2019; 10:1848. [PMID: 31456720 PMCID: PMC6700361 DOI: 10.3389/fpsyg.2019.01848] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/26/2019] [Indexed: 11/17/2022] Open
Abstract
The present study aims to compare quality of life, depression, anxiety symptoms, and profile of mood state of wheelchair athletes and non-athletes. Thirty-nine basketball and rugby wheelchair athletes (n = 23, nine women, age 36.0 ± 10.0 years; body mass 66.2 ± 13.8 kg; height 170.0 ± 8.5 cm) and non-athletes (n = 16, 4 women, 39.0 ± 14.2 years; body mass 79.6 ± 17.2 kg; height 170.0 ± 6.4 cm) were recruited. Quality of life, anxiety and depressive symptoms and mood disorders were evaluated by the Medical Outcomes Short-Form Health Survey (SF-36), State-Trait Anxiety Inventory, Beck Depression Inventory and Profile of Mood State questionnaire, respectively. Comparison between groups (non-athletes vs. athletes) was performed using Student’s t-test for independent samples. No differences (p > 0.05) were found between non-athletes vs. athletes regards to quality of life, depressive and anxiety symptoms and profile of mood state. Overall, non-athletes and athletes presented medium anxiety symptoms and mild to moderate depressive symptoms. In conclusion, the wheelchair athletes and non-athletes presented similar quality of life, depressive and anxiety symptoms, and profile of mood state.
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Affiliation(s)
- Rodrigo Luiz Vancini
- Centro de Educação Física e Desportos, Laboratório de Força e Condicionamento, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Andressa Amato Gomes
- Centro de Educação Física e Desportos, Laboratório de Força e Condicionamento, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Hudson de Paula-Oliveira
- Centro de Educação Física e Desportos, Laboratório de Força e Condicionamento, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Claudio de Lira
- Setor de Fisiologia Humana e do Exercício, Laboratório de Avaliação do Movimento Humano, Faculdade de Educação Física e Dança, Universidade Federal de Goiás, Goiânia, Brazil
| | - Weverton Rufo-Tavares
- Centro de Educação Física e Desportos, Laboratório de Força e Condicionamento, Universidade Federal do Espírito Santo, Vitória, Brazil
| | | | - Karine Jacon Sarro
- Faculdade de Educação Física, Universidade Estadual de Campinas, Campinas, Brazil
| | | | - Ricardo Borges Viana
- Setor de Fisiologia Humana e do Exercício, Laboratório de Avaliação do Movimento Humano, Faculdade de Educação Física e Dança, Universidade Federal de Goiás, Goiânia, Brazil
| | | | - Thomas Rosemann
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | - Beat Knechtle
- Institute of Primary Care, University of Zurich, Zurich, Switzerland.,Medbase St. Gallen Am Vadianplatz, St. Gallen, Switzerland
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23
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Influence of Equimolar Doses of Beetroot Juice and Sodium Nitrate on Time Trial Performance in Handcycling. Nutrients 2019; 11:nu11071642. [PMID: 31323779 PMCID: PMC6683039 DOI: 10.3390/nu11071642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/11/2019] [Accepted: 07/16/2019] [Indexed: 12/17/2022] Open
Abstract
This study aimed to investigate the influence of a single dose of either beetroot juice (BR) or sodium nitrate (NIT) on performance in a 10 km handcycling time trial (TT) in able-bodied individuals and paracyclists. In total, 14 able-bodied individuals [mean ± SD; age: 28 ± 7 years, height: 183 ± 5 cm, body mass (BM): 82 ± 9 kg, peak oxygen consumption (VO2peak): 33.9 ± 4.2 mL/min/kg] and eight paracyclists (age: 40 ± 11 years, height: 176 ± 9cm, BM: 65 ± 9 kg, VO2peak: 38.6 ± 10.5 mL/min/kg) participated in the study. All participants had to perform three TT on different days, receiving either 6 mmol nitrate as BR or NIT or water as a placebo. Time-to-complete the TT, power output (PO), as well as oxygen uptake (VO2) were measured. No significant differences in time-to-complete the TT were found between the three interventions in able-bodied individuals (p = 0.80) or in paracyclists (p = 0.61). Furthermore, VO2 was not significantly changed after the ingestion of BR or NIT in either group (p < 0.05). The PO to VO2 ratio was significantly higher in some kilometers of the TT in able-bodied individuals (p < 0.05). The ingestion of BR or NIT did not increase handcycling performance in able-bodied individuals or in paracyclists.
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24
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Seron BB, Oliveira de Carvalho EM, Greguol M. Analysis of Physiological and Kinematic Demands of Wheelchair Basketball Games-A Review. J Strength Cond Res 2019; 33:1453-1462. [PMID: 30844988 DOI: 10.1519/jsc.0000000000003069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Seron, BB, Oliveira de Carvalho, EM, and Greguol, M. Analysis of physiological and kinematic demands of wheelchair basketball games-A review. J Strength Cond Res 33(5): 1453-1462, 2019-In wheelchair basketball (WB), knowledge of the specificities of the game is essential for efficient planning of training strategies for high performance. This study aimed to review the literature concerning studies that have investigated physiological and kinematic measures during WB games. The literature search took place in 4 electronic databases: Scopus, MEDLINE-PubMed, SPORTDiscus, and CINAHL. The inclusion criteria for this review were as follows: (a) articles that evaluated the behavior of physiological and kinematic variables during WB games; (b) athletes aged at least 18 years; and (c) participants with a minimum of 1 year in the modality practice. The selected studies (n = 16) were divided into 2 groups: physiological analysis (n = 11) and kinematic analysis (n = 5). In analyzing the studies, it was observed that the WB game is very demanding in relation to cardiovascular requirements (∼65% of the time is spent in zones of high heart rate [HR] intensity and 70% of V[Combining Dot Above]O2peak). Edwards and Stagno methods seem to be adequate for the control of internal loads imposed on WB players, and moderate correlations were found between rating of perceived exertion measures and HR-based methods. Considering the methodological limitations, kinematic analysis in WB games is rather inconsistent (distance traveled between 2.6 and 5 km; average speed between 1.8 and 2.0 m·s; maximum speed = 4 m·s). Despite the gaps observed in this context, the execution of rotational movements seems to have great relevance for WB. We can conclude that different methods have been adequate for the internal load control in WB games. However, the results of the external demands are not enough to determine a profile nor to serve as parameters for the training prescription for athletes of the modality.
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Affiliation(s)
- Bruna Barboza Seron
- Department of Physical Education, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Márcia Greguol
- Department of Sports Science, State University of Londrina, Londrina, Paraná, Brazil
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25
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Logan-Sprenger HM, Mc Naughton LR. Characterizing thermoregulatory demands of female wheelchair basketball players during competition. Res Sports Med 2019; 28:256-267. [DOI: 10.1080/15438627.2019.1627546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Heather M. Logan-Sprenger
- University of Ontario Institute of Technology, Oshawa, Canada
- Canadian Sport Institute Ontario, Toronto, Ontario, Canada
| | - Lars R. Mc Naughton
- Edge Hill University, Ormskirk, UK
- Department of Sport and Movement Studies, Faculty of Health Science, University of Johannesburg, Johannesburg, South Africa
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26
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Estimating the Maximum Isometric Force Generating Capacity of Wheelchair Racing Athletes for Simulation Purposes. J Appl Biomech 2019; 35:358–365. [PMID: 31141441 DOI: 10.1123/jab.2018-0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
For the wheelchair racing population, it is uncertain whether musculoskeletal models using the maximum isometric force generating capacity of non-athletic, able-bodied individuals, are appropriate, as few anthropometric parameters for wheelchair athletes are reported in the literature. In this study, a sensitivity analysis was performed in OpenSim, whereby the maximum isometric force generating capacity of muscles was adjusted in 25% increments to literature defined values between scaling factors of 0.25x to 4.0x for two elite athletes, at three speeds representative of race conditions. Convergence of the solution was used to assess the results. Artificially weakening a model presented unrealistic values, and artificially strengthening a model excessively (4.0x) demonstrated physiologically invalid muscle force values. The ideal scaling factors were 1.5x and 1.75x for each of the athletes, respectively, as was assessed through convergence of the solution. This was similar to the relative difference in limb masses between dual energy X-Ray absorptiometry (DXA) data and anthropometric data in the literature (1.49x and 1.70x), suggesting that DXA may be used to estimate the required scaling factors. The reliability of simulations for elite wheelchair racing athletes can be improved by appropriately increasing the maximum isometric force generating capacity of muscles.
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27
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Broad EM, Newsome LJ, Dew DA, Barfield J. Measured and predicted resting energy expenditure in wheelchair rugby athletes. J Spinal Cord Med 2019; 43:388-397. [PMID: 31017540 PMCID: PMC7241465 DOI: 10.1080/10790268.2019.1608062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objective: Report measured resting energy expenditure (REE) in wheelchair rugby athletes and evaluate agreement between REE and the prediction models of Chun, Cunningham, Harris-Benedict, Mifflin, Nightingale and Gorgey, and Owen.Design: Cohort-based validation study.Setting. Paralympic team training camp.Participants: Fourteen internationally competitive athletes who play wheelchair rugby, 13 of whom had cervical spinal cord injuries (SCI).Outcome Measures: A portable metabolic analyzer was used to measure REE following an overnight fast and dual-energy X-ray absorptiometry (DXA) was used to assess lean body mass for the prediction equations.Results: REE in the current sample was 1735 ± 257 kcal × day-1 ranging from 1324 to 2068 kcal × day-1. Bland-Altman analyses revealed negative mean bias but similar limits of agreement between measured REE and scores predicted by Chun, Cunningham, Mifflin, Nightingale and Gorgey, and Owen models in elite athletes who play wheelchair rugby.Conclusion: Prediction models regressed on persons with and without SCI under-predicted REE of competitive wheelchair rugby athletes. This outcome may be explained by the higher REE/fat-free mass (FFM) ratio of current athletes compared to less active samples. Findings from the current study will help practitioners to determine nutrient intake needs on training days of varied intensity.
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Affiliation(s)
| | - Laura J. Newsome
- Department of Health and Human Performance, Radford University, Radford, Virginia, USA
| | - Dustin A. Dew
- Lakeshore Foundation, Birmingham, Alabama, USA,UAB/Lakeshore Research Collaborative; School of Health Professions, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - J.P. Barfield
- Department of Athletic Training, Emory & Henry College, Emory, Virginia, USA,Correspondence to: J.P. Barfield, Exercise Science, Emory & Henry College, Box 947, Emory, VA 24327, USA.
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Hosokawa Y, Casa DJ, Trtanj JM, Belval LN, Deuster PA, Giltz SM, Grundstein AJ, Hawkins MD, Huggins RA, Jacklitsch B, Jardine JF, Jones H, Kazman JB, Reynolds ME, Stearns RL, Vanos JK, Williams AL, Williams WJ. Activity modification in heat: critical assessment of guidelines across athletic, occupational, and military settings in the USA. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2019; 63:405-427. [PMID: 30710251 PMCID: PMC10041407 DOI: 10.1007/s00484-019-01673-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 01/13/2019] [Accepted: 01/15/2019] [Indexed: 05/04/2023]
Abstract
Exertional heat illness (EHI) risk is a serious concern among athletes, laborers, and warfighters. US Governing organizations have established various activity modification guidelines (AMGs) and other risk mitigation plans to help ensure the health and safety of their workers. The extent of metabolic heat production and heat gain that ensue from their work are the core reasons for EHI in the aforementioned population. Therefore, the major focus of AMGs in all settings is to modulate the work intensity and duration with additional modification in adjustable extrinsic risk factors (e.g., clothing, equipment) and intrinsic risk factors (e.g., heat acclimatization, fitness, hydration status). Future studies should continue to integrate more physiological (e.g., valid body fluid balance, internal body temperature) and biometeorological factors (e.g., cumulative heat stress) to the existing heat risk assessment models to reduce the assumptions and limitations in them. Future interagency collaboration to advance heat mitigation plans among physically active population is desired to maximize the existing resources and data to facilitate advancement in AMGs for environmental heat.
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Affiliation(s)
- Yuri Hosokawa
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA.
- College of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan.
| | - Douglas J Casa
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA
| | - Juli M Trtanj
- National Oceanic and Atmospheric Administration, Washington DC, USA
| | - Luke N Belval
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA
| | - Patricia A Deuster
- Consortium for Health and Military Performance, Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Sarah M Giltz
- National Oceanic and Atmospheric Administration, Washington DC, USA
- Louisiana Sea Grant, Louisiana State University, Baton Rouge, LA, USA
| | | | | | - Robert A Huggins
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA
| | - Brenda Jacklitsch
- National Institute for Occupational Safety and Health, Cincinnati, OH, USA
| | - John F Jardine
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA
| | - Hunter Jones
- National Oceanic and Atmospheric Administration, Washington DC, USA
- University Corporation for Atmospheric Research, Boulder, CO, USA
| | - Josh B Kazman
- Consortium for Health and Military Performance, Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Mark E Reynolds
- U.S. Army Public Health Center, Aberdeen Proving Ground, Aberdeen, MD, USA
| | - Rebecca L Stearns
- Korey Stringer Institute, University of Connecticut, Storrs, CT, USA
| | - Jennifer K Vanos
- Scripps Institution of Oceanography Department, University of California San Diego, La Jolla, CA, USA
| | - Alan L Williams
- Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - W Jon Williams
- National Institute for Occupational Safety and Health, Cincinnati, OH, USA
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Cowley KC. A new conceptual framework for the integrated neural control of locomotor and sympathetic function: implications for exercise after spinal cord injury. Appl Physiol Nutr Metab 2019; 43:1140-1150. [PMID: 30071179 DOI: 10.1139/apnm-2018-0310] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
All mammals, including humans, are designed to produce sustained locomotor movements. Many higher centres are involved in movement, but ultimately these centres act upon a core "rhythm-generating" network within the brainstem-spinal cord. In addition, endurance-based locomotor exercise requires sympathetic neural support to maintain homeostasis and to provide needed metabolic resources. This review focuses on the roles and integration of these 2 neural systems. Part I reviews the cardiovascular, thermoregulatory, and metabolic functions under spinal sympathetic control as revealed by spinal cord injury at different levels. Part II examines the integration between brainstem-spinal sympathetic pathways and the neural circuitry producing motor rhythms. In particular, the rostroventral medulla (RVM) contains the neural circuitry that (i) integrates heart rate, contractility, and blood flow in response to postural changes; (ii) initiates and maintains cardiovascular adaptations for exercise; (iii) provides direct descending innervation to preganglionic neurons innervating the adrenal glands, white adipose tissue, and tissues responsible for cooling the body; (iv) integrates descending sympathetic drive for energy substrate mobilization (lipolysis); and (v) is the relay for descending locomotor commands arising from higher brain centres. A unifying conceptual framework is presented, in which the RVM serves as the final descending supraspinal "exercise integration centre" linking the descending locomotor command signal with the metabolic and homeostatic support needed to produce prolonged rhythmic activities. The role and rationale for an ascending sympathetic and locomotor drive from the lower to upper limbs within this framework is presented. Examples of new research directions based on this unifying framework are discussed.
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Affiliation(s)
- Kristine C Cowley
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada.,Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
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30
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Dutton RA. Medical and Musculoskeletal Concerns for the Wheelchair Athlete: A Review of Preventative Strategies. Curr Sports Med Rep 2019; 18:9-16. [PMID: 30624329 DOI: 10.1249/jsr.0000000000000560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Adaptive sports refers to organized sporting activities that are practiced by individuals with disabilities and are worthwhile to maintain physical and psychological health. As adaptive sports participation continues to rise, health care providers must have an enhanced understanding of injury and illness patterns specific to the adaptive athlete. Early recognition and prevention are important to ensure safe and successful participation in sport. The present review aims to provide a framework for diagnosis and prevention of common conditions specific to the wheelchair athlete. In particular, autonomic dysreflexia, impaired thermoregulation, urinary tract infection, and pressure injuries, as well as shoulder pain, upper-extremity entrapment neuropathies, and osteoporotic fractures will be discussed.
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Affiliation(s)
- Rebecca A Dutton
- University of New Mexico, Department of Orthopaedics and Rehabilitation
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Iturricastillo A, Granados C, Cámara J, Reina R, Castillo D, Barrenetxea I, Lozano L, Yanci J. Differences in Physiological Responses During Wheelchair Basketball Matches According to Playing Time and Competition. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2018; 89:474-481. [PMID: 30260747 DOI: 10.1080/02701367.2018.1511044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE The main purpose of the present study was to determine physiological responses in wheelchair basketball (WB) matches in relation to heart rate (HR), match load (ML), differentiated perceived exertion (dRPE), lactate concentrations (LA), and tympanic temperature (TEMP), while specifying the individual player's playing time during different types of matches. METHOD Nine Spanish First Division WB players participated in the study. Three groups were determined for each observation (i.e., HR, ML, dRPE, LA, and TEMP) according to the minutes played by the WB players: players who had played 30 min to 40 min (WB30-40), those who played 20 min to 30 min, and those who played 0 min to 20 min. RESULTS The WB30-40 group attained statistically significantly higher results in mean HR than the other groups in league and playoff matches (p < .05; Δ% > -25.73%; ES > -1.31, large). With regard to the difference in each variable between league and playoff matches, the differences were highlighted in the WB30-40 group according to ML (Edwards, p < .05, Δ% = -11.14%, ES = -0.87, large; Stagno's modified TRIMP, p < .05, Δ% = -16.95%, ES = -0.77, large). Tympanic temperature also reached higher values in playoff matches compared with league matches in WB30-40 (p < .05; Δ% = 1.1%; ES = 0.67, moderate) but not in LA values. CONCLUSIONS Coaches should take into account that playoff matches were more demanding than league matches, thus forcing coaches to try to peak WB players' physical performance for the former.
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Baumgart JK, Moes M, Skovereng K, Ettema G, Sandbakk Ø. Examination of gas exchange and blood lactate thresholds in Paralympic athletes during upper-body poling. PLoS One 2018; 13:e0205588. [PMID: 30379853 PMCID: PMC6209185 DOI: 10.1371/journal.pone.0205588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 09/17/2018] [Indexed: 11/30/2022] Open
Abstract
Objectives The primary aim was to compare physiological and perceptual outcome parameters identified at common gas exchange and blood lactate (BLa) thresholds in Paralympic athletes while upper-body poling. The secondary aim was to compare the fit of the breakpoint models used to identify thresholds in the gas exchange thresholds data versus continuous linear and curvilinear (no-breakpoint) models. Methods Fifteen elite Para ice hockey players performed seven to eight 5-min stages at increasing workload until exhaustion during upper-body poling. Two regression lines were fitted to the oxygen uptake (VO2)-carbon dioxide (VCO2) and minute ventilation (VE)/VO2 data to determine the ventilatory threshold (VT), and to the VCO2-VE and VE/VCO2 data to determine the respiratory compensation threshold (RCT). The first lactate threshold (LT1) was determined by the first rise in BLa (+0.4mmol·L-1 and +1.0mmol·L-1) and a breakpoint in the log-log transformed VO2-BLa data, and the second lactate threshold (LT2) by a fixed rise in BLa above 4mmol·L-1 and by employing the modified Dmax method. Paired-samples t-tests were used to compare the outcome parameters within and between the different threshold methods. The fit of the two regression lines (breakpoint model) used to identify thresholds in the gas exchange data was compared to that of a single regression line, an exponential and a 3rd order polynomial curve (no-breakpoint models) by Akaike weights. Results All outcome parameters identified with the VT (i.e., breakpoints in the VO2-VCO2 or VE/VO2 data) were significantly higher than the ones identified with a fixed rise in BLa (+0.4 or +1.0mmol·L-1) at the LT1 (e.g. BLa: 5.1±2.2 or 4.9±1.8 vs 1.9±0.6 or 2.3±0.5mmol·L-1,p<0.001), but were not significantly different from the log-log transformed VO2-BLa data (4.3±1.6mmol·L-1,p>0.06). The outcome parameters identified with breakpoints in the VCO2-VE data to determine the RCT (e.g. BLa: 5.5±1.4mmol·L-1) were not different from the ones identified with the modified Dmax method at the LT2 (5.5±1.1mmol·L-1) (all p>0.53), but were higher compared to parameters identified with VE/VCO2 method (4.9±1.5mmol·L-1) and a fixed BLa value of 4mmol·L-1 (all p<0.03). Although we were able to determine the VT and RCT via different gas exchange threshold methods with good fit in all 15 participants (mean R2>0.931), the continuous no-breakpoint models had the highest probability (>68%) of being the best models for the VO2-VCO2 and the VCO2-VE data. Conclusions In Paralympic athletes who exercise in the upper-body poling mode, the outcome parameters identified at the VT and the ones identified with fixed methods at the LT1 showed large differences, demonstrating that these cannot be used interchangeably to estimate the aerobic threshold. In addition, the close location of the VT, RCT and LT2 does not allow us to distinguish the aerobic and anaerobic threshold, indicating the presence of only one threshold in athletes with a disability exercising in an upper-body mode. Furthermore, the better fit of continuous no-breakpoint models indicates no presence of clear breakpoints in the gas exchange data for most participants. This makes us question if breakpoints in the gas exchange data really exist in an upper-body exercise mode in athletes with disabilities.
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Affiliation(s)
- Julia Kathrin Baumgart
- Centre for Elite Sports Research, Department of Neuroscience and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- * E-mail:
| | - Maaike Moes
- Department of Human Movement Sciences, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Knut Skovereng
- Centre for Elite Sports Research, Department of Neuroscience and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Gertjan Ettema
- Centre for Elite Sports Research, Department of Neuroscience and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Øyvind Sandbakk
- Centre for Elite Sports Research, Department of Neuroscience and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
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Au JS, Sithamparapillai A, Currie KD, Krassioukov AV, MacDonald MJ, Hicks AL. Assessing Ventilatory Threshold in Individuals With Motor-Complete Spinal Cord Injury. Arch Phys Med Rehabil 2018; 99:1991-1997. [DOI: 10.1016/j.apmr.2018.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/16/2018] [Accepted: 05/12/2018] [Indexed: 11/28/2022]
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Shea JR, Shay BL, Leiter J, Cowley KC. Energy Expenditure as a Function of Activity Level After Spinal Cord Injury: The Need for Tetraplegia-Specific Energy Balance Guidelines. Front Physiol 2018; 9:1286. [PMID: 30283348 PMCID: PMC6156377 DOI: 10.3389/fphys.2018.01286] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/27/2018] [Indexed: 01/08/2023] Open
Abstract
The World Health Organization recognizes obesity as a global and increasing problem for the general population. Because of their reduced physical functioning, people with spinal cord injury (SCI) face additional challenges for maintaining an appropriate whole body energy balance, and the majority with SCI are overweight or obese. SCI also reduces exercise capacity, particularly in those with higher-level injury (tetraplegia). Tetraplegia-specific caloric energy expenditure (EE) data is scarce. Therefore, we measured resting and exercise-based energy expenditure in participants with tetraplegia and explored the accuracy of general population-based energy use predictors. Body composition and resting energy expenditure (REE) were measured in 25 adults with tetraplegia (C4/5 to C8) and in a sex-age-height matched group. Oxygen uptake, carbon dioxide production, heart rate, perceived exertion, and exercise intensity were also measured in 125 steady state exercise trials. Those with motor-complete tetraplegia, but not controls, had measured REE lower than predicted (mean = 22% less, p < 0.0001). REE was also lower than controls when expressed per kilogram of lean mass. Nine had REE below 1200 kcal/day. We developed a graphic compendium of steady state EE during arm ergometry, wheeling, and hand-cycling. This compendium is in a format that can be used by persons with tetraplegia for exercise prescription (calories, at known absolute intensities). EE was low (55–450 kcal/h) at the intensities participants with tetraplegia were capable of maintaining. If people with tetraplegia followed SCI-specific activity guidelines (220 min/week) at the median intensities we measured, they would expend 563–1031 kcal/week. Participants with tetraplegia would therefore require significant time (4 to over 20 h) to meet a weekly 2000 kcal exercise target. We estimated total daily EE for a range of activity levels in tetraplegia and compared them to predicted values for the general population. Our analysis indicated that the EE values for sedentary through moderate levels of activity in tetraplegia fall well below predicted sedentary levels of activity for the general population. These findings help explain sub-optimal responses to exercise interventions after tetraplegia, and support the need to develop tetraplegia-specific energy-balance guidelines that reflects their unique EE situation.
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Affiliation(s)
- Jessie R Shea
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Barbara L Shay
- Department of Physical Therapy, College of Rehabilitation Sciences, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Jeff Leiter
- Department of Surgery, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.,Pan Am Clinic Foundation, Winnipeg, MB, Canada
| | - Kristine C Cowley
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
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Edwards T, Barfield JP, Niemiro GM, Beals JW, Broad EM, Motl RW, De Lisio M, Burd NA, Pilutti LA. Physiological responses during a 25-km time trial in elite wheelchair racing athletes. Spinal Cord Ser Cases 2018; 4:77. [PMID: 30131876 DOI: 10.1038/s41394-018-0114-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/27/2018] [Accepted: 07/28/2018] [Indexed: 11/09/2022] Open
Abstract
Study Design Observational study. Objectives To characterize the cardiorespiratory and metabolic response of elite wheelchair racing (WCR) athletes during a 25 km, field-based time trial. Settings University laboratory and field racing course in Urbana, Illinois, USA. Methods Seven elite WCR athletes (4 men/3 women) with spinal cord injury completed an incremental exercise test to exhaustion on a computerized wheelchair roller system to determine peak cardiorespiratory capacity in the laboratory. The athletes then completed a long-distance, field-based time trial (i.e., 25 km) within 5 days. Energy expenditure was measured continuously during the time trial with a portable metabolic unit. Blood samples were collected to determine blood lactate and glucose concentrations. Core temperature was measured using an ingestible sensor thermistor. Results Five participants completed the long-distance time trial with usable cardiorespiratory data. Median heart rate and oxygen consumption during the time trial was 93.6% and 76.6% of peak values, respectively. Median energy expenditure was 504.6 kcal/h. There was a significant increase in blood lactate concentration from 0.7 to 4.0 mmol/L after the time trial (p = 0.03). There were no changes in blood glucose concentrations after the time trial (p = 0.27). Lastly, core temperature significantly increased from 37.1 at baseline to 38.7 °C immediately after the time trial (p = 0.01). Conclusions Elite WCR athletes sustained a high exercise intensity that was consistent across the long-distance time trial, and exercise intensity outcomes were generally lower than those documented for elite able-bodied long-distance athletes in other studies. Our findings provide accurate estimates of energy expenditure that can be used to design effective training and racing strategies for elite WCR athletes.
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Affiliation(s)
- Thomas Edwards
- 1School of Human Kinetics, University of Ottawa, Ottawa, ON Canada
| | - J P Barfield
- 2School of Health Sciences, Emory and Henry College, Emory, VA USA
| | - Grace M Niemiro
- 3Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL USA
| | - Joseph W Beals
- 3Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL USA
| | | | - Robert W Motl
- 5Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL USA
| | - Michael De Lisio
- 1School of Human Kinetics, University of Ottawa, Ottawa, ON Canada.,6Brain and Mind Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Nicholas A Burd
- 3Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL USA
| | - Lara A Pilutti
- 6Brain and Mind Research Institute, University of Ottawa, Ottawa, ON Canada.,7Interdisciplinary School of Health Sciences, University of Ottawa, Ottawa, ON Canada
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Baumgart JK, Brurok B, Sandbakk Ø. Peak oxygen uptake in Paralympic sitting sports: A systematic literature review, meta- and pooled-data analysis. PLoS One 2018; 13:e0192903. [PMID: 29474386 PMCID: PMC5825058 DOI: 10.1371/journal.pone.0192903] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/12/2018] [Indexed: 11/30/2022] Open
Abstract
Background Peak oxygen uptake (VO2peak) in Paralympic sitting sports athletes represents their maximal ability to deliver energy aerobically in an upper-body mode, with values being influenced by sex, disability-related physiological limitations, sport-specific demands, training status and how they are tested. Objectives To identify VO2peak values in Paralympic sitting sports, examine between-sports differences and within-sports variations in VO2peak and determine the influence of sex, age, body-mass, disability and test-mode on VO2peak. Design Systematic literature review and meta-analysis. Data sources PubMed, CINAHL, SPORTDiscusTM and EMBASE were systematically searched in October 2016 using relevant medical subject headings, keywords and a Boolean. Eligibility criteria Studies that assessed VO2peak values in sitting sports athletes with a disability in a laboratory setting were included. Data synthesis Data was extracted and pooled in the different sports disciplines, weighted by the Dersimonian and Laird random effects approach. Quality of the included studies was assessed with a modified version of the Downs and Black checklist by two independent reviewers. Meta-regression and pooled-data multiple regression analyses were performed to assess the influence of sex, age, body-mass, disability, test mode and study quality on VO2peak. Results Of 6542 retrieved articles, 57 studies reporting VO2peak values in 14 different sitting sports were included in this review. VO2peak values from 771 athletes were used in the data analysis, of which 30% participated in wheelchair basketball, 27% in wheelchair racing, 15% in wheelchair rugby and the remaining 28% in the 11 other disciplines. Fifty-six percent of the athletes had a spinal cord injury and 87% were men. Sports-discipline-averaged VO2peak values ranged from 2.9 L∙min-1 and 45.6 mL∙kg-1∙min-1 in Nordic sit skiing to 1.4 L∙min-1 and 17.3 mL∙kg-1∙min-1 in shooting and 1.3 L∙min-1 and 18.9 mL∙kg-1∙min-1 in wheelchair rugby. Large within-sports variation was found in sports with few included studies and corresponding low sample sizes. The meta-regression and pooled-data multiple regression analyses showed that being a man, having an amputation, not being tetraplegic, testing in a wheelchair ergometer and treadmill mode, were found to be favorable for high absolute and body-mass normalized VO2peak values. Furthermore, high body mass was favourable for high absolute VO2peak values and low body mass for high body-mass normalized VO2peak values. Conclusion The highest VO2peak values were found in Nordic sit skiing, an endurance sport with continuously high physical efforts, and the lowest values in shooting, a sport with low levels of displacement, and in wheelchair rugby where mainly athletes with tetraplegia compete. However, VO2peak values need to be interpreted carefully in sports-disciplines with few included studies and large within-sports variation. Future studies should include detailed information on training status, sex, age, test mode, as well as the type and extent of disability in order to more precisely evaluate the effect of these factors on VO2peak.
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Affiliation(s)
- Julia Kathrin Baumgart
- Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, Norwegian University of Science and Technology, Trondheim, Norway
- * E-mail:
| | - Berit Brurok
- Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Physical Medicine and Rehabilitation, St. Olav’s University Hospital, Trondheim, Norway
| | - Øyvind Sandbakk
- Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, Norwegian University of Science and Technology, Trondheim, Norway
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Neuromuscular Responses and Physiological Changes During Small-Sided Games in Wheelchair Basketball. Adapt Phys Activ Q 2018; 35:20-35. [PMID: 29256634 DOI: 10.1123/apaq.2016-0139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim was to analyze the changes of physical performance and physiological responses during a high-intensity training task in wheelchair basketball (WB) players. Thirteen Spanish first division WB male players participated in this study. A test battery (change of direction ability, sprints, and sled towing) was performed to study neuromuscular responses before (pre) and after (post) the small-sided games (SSG). Furthermore, tympanic temperature and blood lactate concentration were measured before and immediately after players finished the SSG. The SSG tasks consisted in four players against four, 4 bouts of 4 min with 2 min of recovery periods. There was a 1.10% decline in performance in both 5- and 20-m sprints (p < .01; effect size [ES] ≤ 0.14), 1.82% decline in 5-m sled towing (p < .05; ES = 0.18), and 2.68% decline in 20-m sled towing (p < .01; ES = 0.27) between pre- and post-SSG. As in physical performance results, significant differences were observed between pre and post in physiological markers, with increasing tympanic temperature (36.21 ± 0.60 °C to 36.97 ± 0.59 °C; p < .001; ES = 1.27) and blood lactate concentrations (1.95 ± 1.30 mmol/L to 5.84 ± 2.04 mmol/L; p < .001; ES = 2.99) after SSG. The SSG produced a decrease in sprint and sled towing performance after 16 min of intense exercise. Moreover, the decrease in physical performance was accompanied with an increase in physiological responses. These neuromuscular responses could be similar in the real game; thus, coaching staff could benefit from this information when changing bench players.
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Thornton HR, Miller J, Taylor L, Sargent C, Lastella M, Fowler PM. Impact of short- compared to long-haul international travel on the sleep and wellbeing of national wheelchair basketball athletes. J Sports Sci 2017; 36:1476-1484. [PMID: 29099652 DOI: 10.1080/02640414.2017.1398883] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Currently, very little is known about the impact of short- or long-haul air travel on the sleep and wellbeing of wheelchair basketball athletes. Eleven national wheelchair basketball athletes wore actigraphy monitors prior, during, and after air travel to the United Kingdom. Upon arrival, participants rated their subjective jet-lag, fatigue, and vigor. Individuals traveled to the United Kingdom from different locations in Australia, the United States, and Europe and were categorised according to travel length [LONG (up to 30.2 h) or SHORT (up to 6.5 h)]. Linear mixed models determined effects of travel length on sleep and subjective ratings of jet-lag, fatigue, and vigor. During competition, subjective fatigue and jet-lag were substantially higher (ES = 0.73; ±0.77) and (ES = 0.57; ±0.60), subjective vigor was lower (ES = 1.94; ±0.72), and get-up time was earlier (ES = 0.57; ±0.60) for LONG when compared to SHORT. Travelling greater distances by airplane had a larger effect on subjective ratings of jet-lag, fatigue and vigor, rather than sleep. Irrespective of travel group, sleep and subjective responses were compromised, reflecting the travel requirements, competition-mediated influences, and/or due to a change in environment.
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Affiliation(s)
- Heidi R Thornton
- a La Trobe Sport and Exercise Medicine Research Centre , La Trobe University Bundoora Campus , Melbourne , Victoria , Australia
| | - Joanna Miller
- b Australian Institute of Sport, Physiology, Bruce, Canberra, ACT , Australia
| | - Lee Taylor
- c ASPETAR, Athlete Health and Performance Research Centre , Doha , Qatar.,d School of Sport, Exercise and Health Sciences , Loughborough University , Loughborough , UK
| | - Charli Sargent
- e Central Queensland University , Appleton Institute for Behavioural Science , Wayville , SA , Australia
| | - Michele Lastella
- e Central Queensland University , Appleton Institute for Behavioural Science , Wayville , SA , Australia
| | - Peter M Fowler
- c ASPETAR, Athlete Health and Performance Research Centre , Doha , Qatar
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Load Monitoring Variables in Training and Competition Situations: A Systematic Review Applied to Wheelchair Sports. Adapt Phys Activ Q 2017; 34:466-483. [PMID: 29035578 DOI: 10.1123/apaq.2016-0149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of this review was to identify the main variables for load monitoring in training and competition situations in wheelchair sports. Studies were identified from a systematic search of three databases (PubMed, Web of Science, and SportDiscuss), with search phrases constructed from MeSH terms, alone or in combination, limited to English-language literature, and published up to January 2016. Our main findings were that variables related to external load (distance, speed, and duration) are used to monitor load in competition. In training situations, researchers have used variables related to internal load (heart rate and VO2); in both training and competition situations, researchers used internal load measurements (training impulse and ratings of perceived exertion). We conclude that the main variables for load monitoring in competitive situations were distance, speed, and duration, whereas the variables for training situations were heart rate, VO2, training impulse, and ratings of perceived exertion.
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Tsunoda K, Mutsuzaki H, Hotta K, Shimizu Y, Kitano N, Wadano Y. Correlation between sleep and psychological mood states in female wheelchair basketball players on a Japanese national team. J Phys Ther Sci 2017; 29:1497-1501. [PMID: 28931975 PMCID: PMC5599808 DOI: 10.1589/jpts.29.1497] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 06/01/2017] [Indexed: 11/29/2022] Open
Abstract
[Purpose] Although some studies suggest the importance of getting adequate sleep for
enhancing mood, there is not yet sufficient evidence on the relationship between sleep and
mood states in athletes, especially for athletes with physical disability. The purpose of
this study is to reveal relationships between sleep and psychological mood states in
female wheelchair basketball players. [Subjects and Methods] Seventeen female wheelchair
basketball players (30.9 ± 9.4 years old) on a Japanese national team participated. Sleep
states were assessed with the Pittsburgh Sleep Quality Index (PSQI), and mood states with
the Japanese version of the Profile of Mood States short form (POMS-SF). Spearman’s rank
correlations were computed. [Results] The mean PSQI score was 5.4 ± 2.6 points, and 9
athletes (52.9%) exceeded the cutoff point (5.5) for insomnia. Higher sleep efficiency
(rS=0.58), fewer sleep disturbances (rS=−0.58), and lower total
PSQI score (rS=−0.51) were significantly correlated with higher vigor. Lower
likelihood of daytime dysfunction was also significantly correlated with lower tension
(rS=0.50). [Conclusion] Vigor was the mood state most frequently correlated
with sleep variables. Because vigor is a known key psychological factor in optimal
performance, the findings are valuable for wheelchair basketball players.
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Affiliation(s)
- Kenji Tsunoda
- Faculty of Social Welfare, Yamaguchi Prefectural University: 3-2-1 Sakurabatake, Yamaguchi, Yamaguchi 753-8502, Japan
| | - Hirotaka Mutsuzaki
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences, Japan
| | - Kazushi Hotta
- Department of Occupational Therapy, School of Healthcare, Ibaraki Prefectural University of Health Sciences, Japan
| | - Yukiyo Shimizu
- Department of Rehabilitation Medicine, University of Tsukuba Hospital, Japan
| | - Naruki Kitano
- Physical Fitness Research Institute, Meiji Yasuda Life Foundation of Health and Welfare, Japan
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Klimešová I, Machová I, Jakubec A, Corkle J. Effect of caffeine on maximal oxygen uptake in wheelchair rugby players: A randomized, placebo-controlled, double-blind study. ACTA GYMNICA 2017. [DOI: 10.5507/ag.2017.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Davis F, Kumaran D S, Nair S, Vijayamuniraj J. Physical fitness training for people with spinal cord injury. Hippokratia 2017. [DOI: 10.1002/14651858.cd007955.pub2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fiddy Davis
- Manipal College of Allied Health Sciences, Manipal University; Department of Physiotherapy; Udupi Karnataka India 576104
| | - Senthil Kumaran D
- Manipal College of Allied Health Sciences, Manipal University; Department of Physiotherapy; Udupi Karnataka India 576104
| | - Sreekumar Nair
- Manipal University; Department of Statistics; 6th Floor, Health Sciences Library Building Madhav Nagar Manipal Karnataka India 576 104
| | - Vijayamuniraj J
- Manipal College of Allied Health Sciences, Manipal University; Department of Physiotherapy; Manipal Manipal Karnataka India 576104
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Leprêtre PM, Goosey-Tolfrey VL, Janssen TWJ, Perret C. Editorial: Rio, Tokyo Paralympic Games and Beyond: How to Prepare Athletes with Motor Disabilities for Peaking. Front Physiol 2016; 7:497. [PMID: 27826257 PMCID: PMC5078875 DOI: 10.3389/fphys.2016.00497] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 10/11/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Pierre-Marie Leprêtre
- UFR-STAPS, Laboratoire de Recherche "Adaptations Physiologiques à L'Exercice et Réadaptation à L'Effort", Université de Picardie Jules Verne Amiens, France
| | - Victoria L Goosey-Tolfrey
- School of Sport, Exercise and Health Sciences, Peter Harrison Centre for Disability Sport, Loughborough UniversityLoughborough, UK; European Research Group in Disability SportLoughborough, UK
| | - Thomas W J Janssen
- Amsterdam Rehabilitation Research Center, VU University Amsterdam, Netherlands
| | - Claudio Perret
- Swiss Paraplegic Centre, Institute of Sports Medicine Nottwil, Switzerland
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Forsyth P, Pumpa K, Knight E, Miller J. Physiological and perceptual effects of precooling in wheelchair basketball athletes. J Spinal Cord Med 2016; 39:671-678. [PMID: 27192132 PMCID: PMC5137577 DOI: 10.1080/10790268.2016.1180098] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To investigate the physiological and perceptual effects of three precooling strategies during pre-exercise rest in athletes with a spinal cord injury (SCI). DESIGN Randomized, counterbalanced. Participants were precooled, then rested for 60 minutes (22.7 ± 0.2°C, 64.2 ± 2.6%RH). SETTING National Wheelchair Basketball Training Centre, Australia. PARTICIPANTS Sixteen wheelchair basketball athletes with a SCI. INTERVENTIONS Participants were precooled through; 1) 10 minutes of 15.8°C cold water immersion (CWI), 2) ingestion of 6.8 g/kg-1 of slushie (S) from sports drink; 3) ingestion of 6.8 g/kg-1 of slushie with application of iced towels to the legs, torso and back/arms (ST); or 4) ingestion of 6.8 g/kg-1 of room temperature (22.3°C) sports drink (CON). OUTCOME MEASURES Core temperature (Tgi), skin temperature (Tsk), heart rate (HR), and thermal and gastrointestinal comfort. RESULTS Following CWI, a significant reduction in Tgi was observed compared to CON, with a greatest reduction of 1.58°C occurring 40 minutes post-cooling (95% CI [1.07, 2.10]). A significant reduction in Tgi following ST compared to CON was also observed at 20 minutes (0.56°C; [0.03, 1.09]) and 30 minutes (0.56°C; [0.04, 1.09]) post-cooling. Additionally, a significant interaction between impairment level and time was observed for Tgi and HR, demonstrating athletes with a higher level of impairment experienced a greater reduction in HR and significant decrease in rate of decline in Tgi, compared to lesser impaired athletes. CONCLUSION CWI and ST can effectively lower body temperature in athletes with a SCI, and may assist in tolerating warm conditions.
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Affiliation(s)
- Peta Forsyth
- Research Institute for Sport and Exercise, University of Canberra, Canberra, ACT, Australia,Physiology Department, Australian Institute of Sport, Canberra, ACT, Australia,Correspondence to: Peta Forsyth, C/- Physiology Department, Australian Institute of Sport, Leverrier Street, ACT, Australia, 2617.
| | - Kate Pumpa
- Research Institute for Sport and Exercise, University of Canberra, Canberra, ACT, Australia
| | - Emma Knight
- Performance Research, Australian Institute of Sport, Canberra, ACT, Australia
| | - Joanna Miller
- Physiology Department, Australian Institute of Sport, Canberra, ACT, Australia
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Physiological responses between players with and without spinal cord injury in wheelchair basketball small-sided games. Spinal Cord 2016; 54:1152-1157. [PMID: 27401127 DOI: 10.1038/sc.2016.43] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 03/07/2016] [Accepted: 03/07/2016] [Indexed: 11/08/2022]
Abstract
STUDY DESIGN This is a comparative study between players with and without spinal cord injury (SCI) during a training task. OBJECTIVE This study examined physiological responses in commonly used small-sided games (SSGs) in well-experienced wheelchair basketball (WB) players with SCI and without SCI (Non-SCI). SETTING The study was conducted with a WB team in Vitoria-Gasteiz, Spain (2014). METHODS The team was divided into an SCI group (n=6) and a Non-SCI group (n=6). Absolute and relative heart rate (HR) along with tympanic temperature and perceived exertion (RPE) were recorded for both groups. RESULTS The two groups attained different absolute HR values for the same SSG. However, no significant differences were observed in relative HR between groups (%HRmean, %HRpeak and the percentage of the time spent in each HR zone: low, moderate, high and maximal) nor in tympanic temperature. Moreover, in relation to the bout evolution analysis (4 repetitions of 4 min), the Non-SCI group significantly increased (P<0.05) absolute HRmean and HRpeak during bouts, whereas the SCI group maintained them constant. Furthermore, the variations in the percentage of the time spent in each HR zone only were observed in the Non-SCI group. CONCLUSION In spite of the Non-SCI group attaining higher absolute HR values, the SCI and Non-SCI groups may have similar HR relative values during a specific WB training task. However, the SCI group reported significantly higher values in respiratory RPE in the last bout than the Non-SCI group for the same SSG.
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Mazzeo F, Santamaria S, Iavarone A. "Boosting" in Paralympic athletes with spinal cord injury: doping without drugs. FUNCTIONAL NEUROLOGY 2016; 30:91-8. [PMID: 26415788 DOI: 10.11138/fneur/2015.30.2.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The intentional activation of autonomic dysreflexia (AD, also called "boosting"), a practice sometimes used by athletes affected by spinal cord injury (SCI), is banned by the International Paralympic Committee (IPC). Although various studies have addressed doping and AD as separate issues, studies evaluating AD as a doping method are lacking. The aim of this brief review is to contribute to better understanding of the relationship between doping and AD. We conducted a literature search of the PubMed database (from 1994 onwards). The key search terms "autonomic dysreflexia" and "boosting" were crossreferenced with "sport performance". The official Paralympic website was also viewed. AD is a potent sympathetic reflex, due to a massive release of noradrenaline, that results in marked vasoconstriction distal to the level of the lesion. Athletes with SCI often self-inflict physical suffering in order to induce this phenomenon, which carries high health risks (i.e., hypertension, cerebral hemorrhage, stroke and sudden death). Boosting is a practice that can be compared to doping methods and the IPC expressly prohibits it. Any deliberate attempt to induce AD, if detected, will lead to disqualification from the sporting event and subsequent investigation by the IPC Legal and Ethics Committee.
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Effects of Cooling During Exercise on Thermoregulatory Responses of Men With Paraplegia. Phys Ther 2016; 96:650-8. [PMID: 26472295 DOI: 10.2522/ptj.20150266] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 10/04/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND People with spinal cord injury (SCI) have an altered afferent input to the thermoregulatory center, resulting in a reduced efferent response (vasomotor control and sweating capacity) below the level of the lesion. Consequently, core body temperature rises more rapidly during exercise in individuals with SCI compared with people who are able-bodied. Cooling strategies may reduce the thermophysiological strain in SCI. OBJECTIVE The aim of this study was to examine the effects of a cooling vest on the core body temperature response of people with a thoracic SCI during submaximal exercise. METHODS Ten men (mean age=44 years, SD=11) with a thoracic lesion (T4-T5 or below) participated in this randomized crossover study. Participants performed two 45-minute exercise bouts at 50% maximal workload (ambient temperature 25°C), with participants randomized to a group wearing a cooling vest or a group wearing no vest (separate days). Core body temperature and skin temperature were continuously measured, and thermal sensation was assessed every 3 minutes. RESULTS Exercise resulted in an increased core body temperature, skin temperature, and thermal sensation, whereas cooling did not affect core body temperature. The cooling vest effectively decreased skin temperature, increased the core-to-trunk skin temperature gradient, and tended to lower thermal sensation compared with the control condition. LIMITATIONS The lack of differences in core body temperature among conditions may be a result of the relative moderate ambient temperature in which the exercise was performed. CONCLUSIONS Despite effectively lowering skin temperature and increasing the core-to-trunk skin temperature gradient, there was no impact of the cooling vest on the exercise-induced increase in core body temperature in men with low thoracic SCI.
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Affiliation(s)
- Claudio Perret
- Institute of Sports Medicine, Swiss Paraplegic Centre, Nottwil, Switzerland
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50
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Pritchett RC, Al-Nawaiseh AM, Pritchett KK, Nethery V, Bishop PA, Green JM. Sweat gland density and response during high-intensity exercise in athletes with spinal cord injuries. Biol Sport 2015; 32:249-54. [PMID: 26424929 PMCID: PMC4577563 DOI: 10.5604/20831862.1163370] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/17/2014] [Accepted: 01/08/2015] [Indexed: 11/13/2022] Open
Abstract
Sweat production is crucial for thermoregulation. However, sweating can be problematic for individuals with spinal cord injuries (SCI), as they display a blunting of sudomotor and vasomotor responses below the level of the injury. Sweat gland density and eccrine gland metabolism in SCI are not well understood. Consequently, this study examined sweat lactate (S-LA) (reflective of sweat gland metabolism), active sweat gland density (SGD), and sweat output per gland (S/G) in 7 SCI athletes and 8 able-bodied (AB) controls matched for arm ergometry VO2peak. A sweat collection device was positioned on the upper scapular and medial calf of each subject just prior to the beginning of the trial, with iodine sweat gland density patches positioned on the upper scapular and medial calf. Participants were tested on a ramp protocol (7 min per stage, 20 W increase per stage) in a common exercise environment (21±1°C, 45-65% relative humidity). An independent t-test revealed lower (p<0.05) SGD (upper scapular) for SCI (22.3 ±14.8 glands · cm(-2)) vs. AB. (41.0 ± 8.1 glands · cm(-2)). However, there was no significant difference for S/G between groups. S-LA was significantly greater (p<0.05) during the second exercise stage for SCI (11.5±10.9 mmol · l(-1)) vs. AB (26.8±11.07 mmol · l(-1)). These findings suggest that SCI athletes had less active sweat glands compared to the AB group, but the sweat response was similar (SLA, S/G) between AB and SCI athletes. The results suggest similar interglandular metabolic activity irrespective of overall sweat rate.
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Affiliation(s)
- R C Pritchett
- Department of Nutrition, Exercise and Health Science, Central Washington University, Ellensburg, WA, USA
| | - A M Al-Nawaiseh
- Department of Sport Rehabilitation, Hashemite University, Zarqa, Jordan
| | - K K Pritchett
- Department of Nutrition, Exercise and Health Science, Central Washington University, Ellensburg, WA, USA
| | - V Nethery
- Department of Nutrition, Exercise and Health Science, Central Washington University, Ellensburg, WA, USA
| | - P A Bishop
- Department of Kinesiology, University of Alabama, Tuscaloosa, USA
| | - J M Green
- Department of Health, Physical Education and Recreation, University of North Alabama, Florence, USA
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