Fluid type influences acute hydration and muscle performance recovery in human subjects

Autor: Preston R. Harris, Douglas A. Keen, Eleni Constantopoulos, Savanna N. Weninger, Eric Hines, Matthew P. Koppinger, Zain I. Khalpey, John P. Konhilas
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Journal of the International Society of Sports Nutrition, Vol 16, Iss 1 (2019)
Druh dokumentu: article
ISSN: 1550-2783
DOI: 10.1186/s12970-019-0282-y
Popis: Background Exercise and heat trigger dehydration and an increase in extracellular fluid osmolality, leading to deficits in exercise performance and thermoregulation. Evidence from previous studies supports the potential for deep-ocean mineral water to improve recovery of exercise performance post-exercise. We therefore wished to determine whether acute rehydration and muscle strength recovery was enhanced by deep-ocean mineral water following a dehydrating exercise, compared to a sports drink or mountain spring water. We hypothesized that muscle strength would decrease as a result of dehydrating exercise, and that recovery of muscle strength and hydration would depend on the type of rehydrating fluid. Methods Using a counterbalanced, crossover study design, female (n = 8) and male (n = 9) participants performed a dehydrating exercise protocol under heat stress until achieving 3% body mass loss. Participants rehydrated with either deep-ocean mineral water (Deep), mountain spring water (Spring), or a carbohydrate-based sports drink (Sports) at a volume equal to the volume of fluid loss. We measured relative hydration using salivary osmolality (Sosm) and muscle strength using peak torque from a leg extension maneuver. Results Sosm significantly increased (p
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