INFLUENCE OF VARIATIONS IN BODY HYDRATION ON COGNITIVE FUNCTION: EFFECT OF HYPERHYDRATION, HEAT STRESS, AND EXERCISE-INDUCED DEHYDRATION.
No abstract available.
EFFECTS OF FLUID INGESTION ON COGNITIVE FUNCTION AFTER HEAT STRESS OR EXERCISE-INDUCED DEHYDRATION
This study investigated the effects of heat exposure, exercise-induced dehydration and fluid ingestion on cognitive performance. Seven healthy men, unacclimatized to heat, were kept euhydrated or were dehydrated by controlled passive exposure to heat (H, two sessions) or by treadmill exercise (E, two sessions) up to a weight loss of 2.8%. On completion of a [...]
ESTIMATION OF PREPRACTICE HYDRATION STATUS OF NATIONAL COLLEGIATE ATHLETIC ASSOCIATION DIVISION I ATHLETES.
ONTEXT: To our knowledge, no one has compared the prepractice hydration status of male and female National Collegiate Athletic Association (NCAA) Division I athletes or has studied the effects of the menstrual cycle phase on women's prepractice hydration status. OBJECTIVE: To report prepractice hydration status of collegiate athletes and determine the factors that might influence [...]
HYDRATION AND THE PHYSIOLOGICAL RESPONSES TO ACUTE NORMOBARIC HYPOXIA
OBJECTIVE: The effect hydration status has on exposure to hypoxia is unclear. The purpose of the study was to identify how hydration status, above and below euhydrated levels, affects the physiological responses and onset of acute mountain sickness symptoms during acute normobaric hypoxia. METHODS: Eight males completed intermittent walking tests under normobaric hypoxic conditions (FIo2 [...]
HYDRATION STATUS, SWEAT RATES, AND REHYDRATION EDUCATION OF YOUTH FOOTBALL CAMPERS.
CONTEXT: Previous field research has not identified sweat rates (SR), fluid consumption (FC), or the efficacy of an educational intervention (EI) for youth during football camp. OBJECTIVE: To measure hydration status and rehydration performance and examine EL using these data. DESIGN: Observational with EI randomized comparison. PARTICIPANTS: Thirty-three boys (mean +/- SD: 12 +/- 2 [...]
EFFECTS OF ACUTE DEHYDRATION AND STARVATION ON MUSCULAR STRENGTH AND ENDURANCE
No abstract available.
REVIEW: EXERCISE, HEAT, HYDRATION AND THE BRAIN
The performance of both physical and mental tasks can be adversely affected by heat and by dehydration. There are well-recognized effects of heat and hydration status on the cardiovascular and thermoregulatory systems that can account for the decreased performance and increased sensation of effort that are experienced in the heat. Provision of fluids of appropriate [...]
WATER INGESTION DOES NOT IMPROVE 1-H CYCLING PERFORMANCE IN MODERATE AMBIENT TEMPERATURES
No abstract available.
NATIONAL ATHLETIC TRAINERSA’ ASSOCIATION POSITION STATEMENT: FLUID REPLACEMENT FOR ATHLETES
OBJECTIVE: To present recommendations to optimize the fluid-replacement practices of athletes. BACKGROUND: Dehydration can compromise athletic performance and increase the risk of exertional heat injury. Athletes do not voluntarily drink sufficient water to prevent dehydration during physical activity. Drinking behavior can be modified by education, increasing accessibility, and optimizing palatability. However, excessive overdrinking should be [...]
FLUID BALANCE AND ENDURANCE EXERCISE PERFORMANCE
Dehydration alters cardiovascular, thermoregulatory, central nervous system, and metabolic functions. One or more of these alterations will degrade endurance exercise performance when dehydration exceeds 2% of body weight. These performance decrements are accentuated by heat stress. To minimize the adverse consequences of body water deficits on endurance exercise performance, it is recommended that fluid intake [...]