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 +/- [...]
GASTRIC EMPTYING DURING EXERCISE: EFFECTS OF HEAT STRESS AND HYPOHYDRATION
To determine the effects of acute heat stress, heat acclimation and hypohydration on the gastric emptying rate of water (W) during treadmill exercise, ten physically fit men ingested 400 ml of W before each of three 15 min bouts of exercise (treadmill, approximately 50% VO2max) on five separate occasions. Stomach contents were aspirated after each [...]
EFFECTS OF ACUTE PLASMA VOLUME EXPANSION ON ALTERING EXERCISE-HEAT PERFORMANCE
To determine the effect an acute plasma volume expansion has on body temperature responses and exercise performance in the heat, seven unacclimatized male volunteers attempted to complete two 90-min walks (45% of VO2 max) in a hot/dry (45 degrees C/20% rh) environment. The experimental walk was preceded by an infusion of human albumin (50 g [...]
EFFECTS OF PROGRESSIVE HYPOHYDRATION ON MAXIMAL ISOMETRIC MUSCLE STRENGTH
No abstract available.
GASTRIC EMPTYING DURING WALKING AND RUNNING: EFFECTS OF VARIED EXERCISE INTENSITY
Gastric emptying is increased during running (50%-70% maximal aerobic uptake, VO2max) as compared to rest. Whether this increase varies as a function of mode (i.e. walking vs running) and intensity of treadmill exercise is unknown. To examine the gastric emptying characteristics of water during treadmill exercise performed over a wide range of intensities relative to [...]
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 [...]