EFFECTS OF 4% DEHYDRATION AND REHYDRATION ON HEMATOLOGICAL PROFILES, URINARY PROFILES AND MUSCULAR ENDURANCE OF COLLEGE WRESTLERS.
No abstract available.
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 HYPOHYDRATION ON GASTRIC EMPTYING AND INTESTINAL ABSORPTION DURING EXERCISE
Dehydration and hyperthermia may impair gastric emptying (GE) during exercise; the effect of these alterations on intestinal water flux (WF) is unknown. Thus the purpose of this study was to determine the effect of hypohydration ( approximately 2.7% body weight) on GE and WF of a water placebo (WP) during cycling exercise (85 min, 65% [...]
PHYSIOLOGICAL TOLERANCE TO UNCOMPENSABLE HEAT STRESS: EFFECTS OF EXERCISE INTENSITY, PROTECTIVE CLOTHING, AND CLIMATE
This study determined the influence of exercise intensity, protective clothing level, and climate on physiological tolerance to uncompensable heat stress. It also compared the relationship between core temperature and the incidence of exhaustion from heat strain for persons wearing protective clothing to previously published data of unclothed persons during uncompensable heat stress. Seven heat-acclimated men [...]
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 [...]
AEROBIC AND ANAEROBIC WORK CAPACITY AFTER DEHYDRATION
No abstract available.
THE EFFECTS OF CONSUMING CARBOHYDRATE-ELECTROLYTE BEVERAGES ON GASTRIC EMPTYING AND FLUID ABSORPTION DURING AND FOLLOWING EXERCISE
A variety of beverages formulated to provide fluid, carbohydrates, and electrolytes during and following exercise are commercially available. Such 'sport drinks' commonly contain 4 to 8% carbohydrate (as glucose, fructose, sucrose or maltodextrins) and small amounts of electrolytes (most often sodium, potassium, and chloride). The efficacy of consuming such beverages has been questioned primarily because [...]
THE INFLUENCE OF VOLUME ON GASTRIC EMPTYING AND FLUID BALANCE DURING PROLONGED EXERCISE
The purpose of this study was to determine the effect of ingesting approximately 800, 1200, or 1600 ml.h-1 of a carbohydrate (CHO) solution on gastric emptying (GE), ratings of stomach fullness (RF), plasma volume changes (PVC), electrolytes, fluid loss, and blood glucose (BG) during 2 h of cycling at 70% of VO2max. Eight male cyclists [...]
BODY FLUID RESPONSES AND HYPOHYDRATION DURING EXERCISE-HEAT STRESS
No abstract available.
FLUID AND CARBOHYDRATE INGESTION INDEPENDENTLY IMPROVE PERFORMANCE DURING 1 H OF INTENSE EXERCISE
This study determined the effects of fluid and carbohydrate ingestion on performance, core temperature, and cardiovascular responses during intense exercise lasting 1 h. On four occasions, eight men cycled at 80 +/- 1% (+/- SEM) of VO2max for 50 min followed by a performance test. During exercise, they consumed either a large volume (1330 +/- [...]