INFLUENCE OF VARIATIONS IN BODY HYDRATION ON COGNITIVE FUNCTION: EFFECT OF HYPERHYDRATION, HEAT STRESS, AND EXERCISE-INDUCED DEHYDRATION.
No abstract available.
PRIOR HEAT STRESS: EFFECT ON SUBSEQUENT 15-MIN TIME TRIAL PERFORMANCE IN THE HEAT.
The impact of prior heat stress on subsequent aerobic exercise-heat performance has not been studied. PURPOSE: To determine whether prior heat stress degrades subsequent aerobic exercise performance in the heat. METHODS: Eighteen nonheat acclimated males were trained (four practice trials) on an aerobic exercise performance test in 22 degrees C and then divided into two [...]
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 [...]
THE EFFECT OF FLUID REPLACEMENT ON ENDURANCE PERFORMANCE
The purpose of this study was to examine the effects of fluid replacement on power output (PO), rating of perceived exertion (RPE), heart rate (HR), body weight (BW), urine osmolarity (Uosm), and urine electrolyte concentrations ([UNa+], [UK+], [UCl-]) in physically active men (n = 4) and women (n = 7). The participants were asked to [...]
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 [...]
EFFECT OF DEHYDRATION AND A FEW REGIMES OF REHYDRATION ON HUMAN PERFORMANCE
The present study was prompted by the controversy about the effect of heat-induced dehydration on human performance, and the popular Indian belief that it is not advisable to take water immediately after prolonged exertion in the sun. The points investigated were: (i) the effect of dehydration on some aspects of physical and mental performance, and [...]
EFFECT OF OVERHYDRATION ON TIME-TRIAL SWIM PERFORMANCE
The effect of hydration status on performance has not been adequately emphasized or examined in swimmers. Theoretically, moderate overhydration might reduce the proportionate fluid loss from the circulation during exercise of this nature. To explore this issue, 11 (5 women, 6 men) collegiate swimmers swam 2 183-m (200-yd) time trials (3 days apart) in alternate, [...]
EFFECT OF WATER BALANCE ON ABILITY TO PERFORM IN HIGH AMBIENT TEMPERATURES
No abstract available.
INFLUENCE OF INGESTED FLUID VOLUME ON PHYSIOLOGICAL RESPONSES DURING PROLONGED EXERCISE
The effect of different rates of fluid ingestion on heart rate, rectal temperature, plasma electrolytes, hormones and performance was examined during prolonged strenuous exercise conducted at 21 degrees C. Seven well-trained males (24 +/- 1 yr; 68.6 +/- 2.9 kg; VO2 peak = 4.69 +/- 0.17 L min-1; mean +/- SEM) cycled for 2 h [...]
EFFECTS OF ACUTE DEHYDRATION AND STARVATION ON MUSCULAR STRENGTH AND ENDURANCE
No abstract available.