Hydration status in college football players during consecutive days of twice-a-day preseason practices.
BACKGROUND: Football players lose 3.5 to 5 kg of body weight during preseason practices because of heavy sweating. This fluid may be difficult to replace when practices occur 2 times per day on consecutive days. HYPOTHESIS: Football players are hypohydrated during twice-a-day preseason training in a hot, humid environment. STUDY DESIGN: Descriptive laboratory study. METHODS: [...]
A review of fluid and hydration in competitive tennis.
Hypohydration is known to impair performance and increases the risk of heat injury. Therefore, the consumption of appropriate fluid volumes before, during, and after tennis play is important to maintain physiological homeostasis and performance. Tennis is a sport that typically has points lasting fewer than ten seconds, with short-to-moderate rest periods between each work bout. [...]
Hydration and vascular fluid shifts during exercise in the heat.
This study examined the effects of hypohydration on plasma volume and red cell volume during rest in a comfortable (20 degrees C, 40% relative humidity) and exercise in a hot-dry (49 degrees C, 20% relative humidity) environment. A group of six male and six female volunteers [matched for maximal O2 uptake (VO2 max)] completed two [...]
The effects of fluid restriction on hydration status and subjective feelings in man.
Hydration status and the effects of hypohydration have been the topic of much public and scientific debate in recent years. While many physiological responses to hypohydration have been studied extensively, the subjective responses to hypohydration have largely been ignored. The present investigation was designed to investigate the physiological responses and subjective feelings resulting from 13, [...]
HYDRATION IN CHILDREN.
Water supply is a basic public problem. In modern science, three periods with different approaches to define recommended water intake in adults can be distinguished. Pediatricians agree that hydration in children may be optimal only in breastfed infants. More data are required on the health effects of different hydration states and varying water intakes in [...]
EARLY ORAL HYDRATION AND ITS IMPACT ON BOWEL ACTIVITY AFTER ELECTIVE CAESAREAN SECTION–OUR EXPERIENCE.
AIM: To assess the effects of early oral hydration after elective caesarian section. METHODS: Hundred women were selected from the maternity wards of LHMC and SSK Hospital, and alternately assigned into control and study groups of 50 each. Women with medical complications and antepartum haemorrhage were excluded. In the study group, oral hydration was started [...]
HYDRATION OF FAT-FREE MASS IN HEALTHY WOMEN WITH SPECIAL REFERENCE TO THE EFFECT OF PREGNANCY.
BACKGROUND: Knowledge of the biological variability of the hydration factor (HF), ie, the ratio between total body water and fat-free mass, is important when calculating total body fat by means of the commonly used two-component model, which is based on estimates of body weight and total body water. The effect of pregnancy on the biological [...]
EFFECT OF MATERNAL HYDRATION ON AMNIOTIC FLUID VOLUME.
OBJECTIVE: To estimate the effects of maternal intravenous hydration on amniotic fluid volume in normal pregnancies. METHODS: Women undergoing an amniocentesis for the evaluation of fetal lung maturity before an elective cesarean delivery were eligible to participate. An amniotic fluid index (AFI) was obtained before the amniocentesis, and at the time of the amniocentesis the [...]