Comparison of glycerol and water hydration regimens on tennis-related performance
| Autor: | Ronald K. Evans, Lucille E. Sistrunk, Meir Magal, J C. Boyd, Michael J. Webster, Malcolm T. Whitehead |
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| Rok vydání: | 2003 |
| Předmět: |
Adult
Glycerol Male medicine.medical_specialty Physical Therapy Sports Therapy and Rehabilitation Placebo Body weight Plasma volume Running chemistry.chemical_compound Animal science Double-Blind Method Task Performance and Analysis medicine Humans Orthopedics and Sports Medicine Dehydration Plasma Volume Cross-Over Studies business.industry Significant difference Water medicine.disease Surgery chemistry Sprint Physical performance Rehydration Solutions Tennis business |
| Zdroj: | Medicine and science in sports and exercise. 35(1) |
| ISSN: | 0195-9131 |
| Popis: | MAGAL, M., M. J. WEBSTER, L. E. SISTRUNK. M. T. WHITEHEAD, R. K. EVANS, and J. C. BOYD. Comparison of Glycerol and Water Hydration Regimens on Tennis-Related Performance. Med. Sci. Sports Exerc., Vol. 35, No. 1, pp. 150-156, 2003. Purpose: To compare glycerol and water hyperhydration and rehydration on tennis related skill and agility performance. Methods: Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: I) hyperhydration with or without glycerol (1.0 g kg- 1 ) over 150 min, 2) 120 min of exercise-induced dehydration (EID), and 3) rehydration with or without glycerol (0.5 g-kg-l) over 90 min. After each phase, subjects performed 5- and 10-m sprint tests, a repeated-effort agility test, and tennis skill tests. Results: Glycerol (G) hyperhydration significantly increased fluid retention by- 900 mL over the placebo (P) (P c 0.05). After EID, body weight was reduced in both groups but was not significantly different between groups (G: -2.71 ± 0.08, P: -2.67 ± 0.09%). At the end of the rehydration phase, PV was significantly greater in the G trial than in the P trial, and the G trial resulted in a significantly greater fluid retention of -700 mL over the P trial (P c 0.05). Although the magnitude of hypohydration was modest ( |
| Databáze: | OpenAIRE |
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