ROLE OF OSMOLALITY AND PLASMA VOLUME DURING RE-HYDRATION IN HUMANS.
No abstract available.
EFFECTS OF GLYCEROL-INDUCED HYPERHYDRATION PRIOR TO EXERCISE IN THE HEAT ON SWEATING AND CORE TEMPERATURE
Hypohydration reduces exercise performance and thermoregulatory capacity in the heat. Hyperhydration prior to exercise may decrease, delay, or eliminate the detrimental effects of hypohydration. The rapid clearance of excess fluid makes hyperhydration of subjects with common beverages difficult. Glycerol, a natural metabolite which is rapidly absorbed, has osmotic action, and is evenly distributed within the [...]
AEROBIC AND ANAEROBIC WORK CAPACITY AFTER DEHYDRATION
No abstract available.
THE MEASUREMENT OF TOTAL BODY WATER IN THE HUMAN SUBJECT BY DEUTERIUM OXIDE DILUTION
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, [...]
BODY FLUID RESPONSES AND HYPOHYDRATION DURING EXERCISE-HEAT STRESS
No abstract available.
HYPOHYDRATION AND THERMOREGULATION IN COLD AIR
This study examined the effects of hypohydration on thermoregulation during cold exposure. In addition, the independent influences of hypohydration-associated hypertonicity and hypovolemia were investigated. Nine male volunteers were monitored for 30 min at 25 degrees C, then for 120 min at 7 degrees C, under three counterbalanced conditions: euhydration (Eu), hypertonic hypohydration (HH), and isotonic [...]
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 [...]
THERMAL AND CIRCULATORY RESPONSES TO REPEATED BOUTS OF PROLONGED RUNNING
The purpose of this study was to determine the thermal and circulatory responses of seven runners (X VO2max = 66 ml kg min) to two bouts of high intensity prolonged treadmill running (PTR) [each 80-min at 70% VO2max] spaced by a 90-min rest. After the transition to exercise, oxygen uptake (VO2) and percent change in [...]
BIOIMPEDANCE ASSESSMENT OF HYPOHYDRATION.
PURPOSE: This study examined the utility of bioimpedance spectroscopy (BIS) for assessing total body water (TBW) changes associated with moderate (6-7% TBW), hypertonic (HH), and isotonic (IH) hypohydration. METHODS: The TBW of nine men was measured using BIS (TBWBIS) when euhydrated (EU) and during HH and IH. These measurements were compared with TBW measurements obtained [...]