Cyclists often use heart rate limits or power output zones, obtained from lactate parameters during incremental exercise testing, to control training intensity. However, the relationship between heart rate or power output, and blood lactate can be changed by several factors including dehydration. Therefore, in the current study we investigated the impact of exercise-induced dehydration on [...]
OBJECTIVE: Urine output, specific gravity, and ketones (urinary indices) are commonly used as an objective means to assess for dehydration and gastroenteritis severity; however, their utility has not been established. The study was designed to evaluate the accuracy of urinary indices as diagnostic tests to identify acute dehydration. METHODS: We completed a prospective cohort study [...]
A 37-year-old Caucasian male died of dehydration and heat exposure following a sweat lodge ceremony in outback Australia. The case demonstrates difficulties that may arise in the determination of the cause of death at autopsy due to nonspecific pathologic findings in hyperthermic deaths. There are also a number of features that characterize this particular "sweat [...]
AIMS: To ascertain the effect of a policy of early weighing on the detection and severity of neonatal hypernatraemic dehydration (NHD) and on breastfeeding rates in the short and medium term. METHODS: A policy of weighing infants at 72-96 h was introduced from 1 July 2004. Two time periods were studied: pre-policy and post-policy (18 [...]
No abstract available.
Dehydration can affect brain structure which has important implications for human health. In this study, we measured regional changes in brain structure following acute dehydration. Healthy volunteers received a structural MRI scan before and after an intensive 90-min thermal-exercise dehydration protocol. We used two techniques to determine changes in brain structure: a manual point counting [...]
We report on the brain diffusion MR imaging findings in a neonate with severe hypernatremic dehydration, which resulted in cerebral edema (osmotic edema) and in apparent diffusion coefficient decrease, despite a careful and slow rehydration. This report provides in vivo insight into nervous cell response to osmotic challenge. PMID: 16091515 [PubMed - indexed for MEDLINE
Due to an absence of published primary data, this study explores dehydration prevalence and the change in physiological parameters frequently used to assess dehydration (fluid deficit) in older hospitalized people, as no standard measurement method exists. This observational longitudinal cohort study recruited 43 people aged 60 years or over, voluntarily admitted to a tertiary teaching [...]
OBJECTIVE: To determine whether moderate water loss (approximately 1.5-2% of body mass (BM)) represents a significant impairment to soccer match-play and the related fitness variables. METHODS: 11 moderately active male soccer players (mean (SD) age 24.4 (3) years, BM 74.03 (10.5) kg, peak oxygen consumption 50.91 (4.0) ml/kg/min) volunteered to participate. The experimental procedure comprised: [...]