Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers
Background Due to the increase in global temperature, it is necessary to investigate solutions so that athletes competing in hot conditions can perform in optimal conditions avoiding loss of performance and health problems. Therefore, this study aims to evaluate the effect of pre-exercise glycerol s...
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Taylor & Francis Group
2024-12-01
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| Series: | Journal of the International Society of Sports Nutrition |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15502783.2024.2346563 |
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| author | Francisco Javier Martínez-Noguera Alessio Cabizosu Pedro E. Alcaraz Cristian Marín-Pagán |
| author_facet | Francisco Javier Martínez-Noguera Alessio Cabizosu Pedro E. Alcaraz Cristian Marín-Pagán |
| author_sort | Francisco Javier Martínez-Noguera |
| collection | DOAJ |
| description | Background Due to the increase in global temperature, it is necessary to investigate solutions so that athletes competing in hot conditions can perform in optimal conditions avoiding loss of performance and health problems. Therefore, this study aims to evaluate the effect of pre-exercise glycerol supplementation during a rectangular test at ambient temperature mid (28.2ºC) on dehydration variables in international race walkers.Methods Eight international male race walkers (age: 28.0 years (4.4); weight: 65.6 kg (6.6); height: 180.0 cm (5.0); fat mass: 6.72% (0.66); muscle mass: 33.3 kg (3.3); VO2MAX: 66.5 ml · kg−1·min−1 (1.9)) completed this randomized crossover design clinical trial. Subjects underwent two interventions: they consumed placebo (n = 8) and glycerol (n = 8) acutely, before a rectangular test where dehydration, RPE, metabolic, kinematic, and thermographic variables were analyzed before, during and after the test.Results After the intervention, significant differences were found between groups in body mass in favor of the placebo (Placebo: −2.23 kg vs Glycerol: −2.48 kg; p = 0.033). For other variables, no significant differences were found.Conclusion Therefore, pre-exercise glycerol supplementation was not able to improve any dehydration, metabolic, kinematic, or thermographic variables during a rectangular test at temperature mid in international race walkers. Possibly, a higher environmental temperature could have generated a higher metabolic and thermoregulatory stress, generating differences between groups like other previous scientific evidence. |
| format | Article |
| id | doaj-art-ee3f6c319bbc4326ae52465aa9c03e80 |
| institution | DOAJ |
| issn | 1550-2783 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of the International Society of Sports Nutrition |
| spelling | doaj-art-ee3f6c319bbc4326ae52465aa9c03e802025-08-20T02:50:26ZengTaylor & Francis GroupJournal of the International Society of Sports Nutrition1550-27832024-12-0121110.1080/15502783.2024.2346563Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkersFrancisco Javier Martínez-Noguera0Alessio Cabizosu1Pedro E. Alcaraz2Cristian Marín-Pagán3Research Center for High Performance Sport Catholic University of Murcia, Murcia, SpainTHERMHESC Group, Chair of Ribera Hospital de Molina San Antonio Catholic University of Murcia (UCAM), Murcia, SpainResearch Center for High Performance Sport Catholic University of Murcia, Murcia, SpainResearch Center for High Performance Sport Catholic University of Murcia, Murcia, SpainBackground Due to the increase in global temperature, it is necessary to investigate solutions so that athletes competing in hot conditions can perform in optimal conditions avoiding loss of performance and health problems. Therefore, this study aims to evaluate the effect of pre-exercise glycerol supplementation during a rectangular test at ambient temperature mid (28.2ºC) on dehydration variables in international race walkers.Methods Eight international male race walkers (age: 28.0 years (4.4); weight: 65.6 kg (6.6); height: 180.0 cm (5.0); fat mass: 6.72% (0.66); muscle mass: 33.3 kg (3.3); VO2MAX: 66.5 ml · kg−1·min−1 (1.9)) completed this randomized crossover design clinical trial. Subjects underwent two interventions: they consumed placebo (n = 8) and glycerol (n = 8) acutely, before a rectangular test where dehydration, RPE, metabolic, kinematic, and thermographic variables were analyzed before, during and after the test.Results After the intervention, significant differences were found between groups in body mass in favor of the placebo (Placebo: −2.23 kg vs Glycerol: −2.48 kg; p = 0.033). For other variables, no significant differences were found.Conclusion Therefore, pre-exercise glycerol supplementation was not able to improve any dehydration, metabolic, kinematic, or thermographic variables during a rectangular test at temperature mid in international race walkers. Possibly, a higher environmental temperature could have generated a higher metabolic and thermoregulatory stress, generating differences between groups like other previous scientific evidence.https://www.tandfonline.com/doi/10.1080/15502783.2024.2346563Thermal stressperformanceoxygen uptakeskin surface temperaturelactate |
| spellingShingle | Francisco Javier Martínez-Noguera Alessio Cabizosu Pedro E. Alcaraz Cristian Marín-Pagán Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers Journal of the International Society of Sports Nutrition Thermal stress performance oxygen uptake skin surface temperature lactate |
| title | Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers |
| title_full | Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers |
| title_fullStr | Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers |
| title_full_unstemmed | Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers |
| title_short | Effects of pre-exercise glycerol supplementation on dehydration, metabolic, kinematic, and thermographic variables in international race walkers |
| title_sort | effects of pre exercise glycerol supplementation on dehydration metabolic kinematic and thermographic variables in international race walkers |
| topic | Thermal stress performance oxygen uptake skin surface temperature lactate |
| url | https://www.tandfonline.com/doi/10.1080/15502783.2024.2346563 |
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