PREDICTING SWEAT LOSS RESPONSE TO EXERCISE, ENVIRONMENT AND CLOTHING
No abstract available.
RESTING METABOLIC RATE AND BODY COMPOSITION OF HEALTHY SWEDISH WOMEN DURING PREGNANCY
Body weight, resting metabolic rate (RMR), total body potassium (TBK), and total body water were measured and total body fat (TBF) was calculated in a longitudinal study of 22 pregnant, healthy Swedish women. Measurements were made before pregnancy, at gestational weeks 16-18, 30, and 36, and 5-10 d and 6 mo postpartum. RMR increased more [...]
URINE OSMOLALITY AND CONDUCTIVITY AS INDICIES OF HYDRATION STATUS IN ATHLETES IN THE HEAT
PURPOSE: The purpose of this study was to determine a quick and easy method for assessment of day-to-day hydration status in athletes in the heat. METHODS: Measurement of the osmolality of the first urine sample of the day collected after wakening but before breakfast established a standardized collection procedure to allow day-to-day comparisons of individuals. [...]
FLUID BALANCE AND HYDRATION HABITS OF ELITE FEMALE FIELD HOCKEY PLAYERS DURING CONSECUTIVE INTERNATIONAL MATCHES.
The purpose of this study was to assess sweat loss and hydration practices of elite female field hockey players during consecutive international matches. Eighteen England U21 field hockey players were assessed during 2 consecutive international matches. Sweat loss was assessed from changes in body mass after correction for the volume of fluid consumed and any [...]
RESPONSE TO A FLUID LOAD IN ATHLETES WITH A HISTORY OF EXERCISE INDUCED HYPONATREMIA
PURPOSE: To determine whether athletes who had previously developed hyponatremia during an ultradistance triathlon show an impaired ability to excrete a large fluid load compared with athletes who had completed the same race without developing hyponatremia. METHODS: Six athletes who had developed hyponatremia ([Na] < 135 mmol x L(-1)) in the 1997 Ironman Triathlon (study [...]
FLUID REPLACEMENT FOLLOWING DEHYDRATION REDUCES OXIDATIVE STRESS DURING RECOVERY.
To investigate the effects of hydration status on oxidative DNA damage and exercise performance, 10 subjects ran on a treadmill until exhaustion at 80% VO(2max) during four different trials [control (C), 3% dehydration (D), 3% dehydration+water (W) or 3% dehydration+sports drink (S)]. Dehydration significantly decreased exercise time to exhaustion (D
CIRCULATORY RESPONSES TO SUBMAXIMAL EXERCISE AFTER DEHYDRATION AND REHYDRATION
No abstract available.
PEDIATRIC SPORTS NUTRITION: AN UPDATE.
PURPOSE OF REVIEW: There is a growing interest in the field of pediatric sports nutrition because of the will to lead the child athlete to high achievements, with minimal impairment of growth and development. In this article, we review some of the new data concerning the possible short-term and long-term effects of nutrition on children's [...]
IMPAIRED HIGH-INTENSITY CYCLING PERFORMANCE TIME AT LOW LEVELS OF DEHYDRATION
On two separate occasions six trained subjects (peak oxygen consumption [VO2peak] 4.41/min) rode for 60 min at 70% of VO2peak and then to exhaustion at 90% of VO2peak to determine the effects of mild dehydration on high-intensity cycling performance time in the heat (32 degrees C, 60% relative humidity, wind speed 3 km/h). In one [...]
PEDIATRIC DISORDERS OF WATER BALANCE
Fluid homeostasis requires adequate water intake, regulated by an intact thirst mechanism and appropriate free water excretion by the kidneys, mediated by appropriate secretion of arginine vasopressin (AVP, also known as antidiuretic hormone). AVP exerts its antidiuretic action by binding to the X chromosome-encoded V2 vasopressin receptor (V2R), a G protein-coupled receptor on the basolateral [...]