INTRODUCTION: Demand for Australian mined iron ore has increased employment within this sector, thus exposing increased numbers of workers to the harsh Australian climate. This study examined the influence of hot (>30°C wet bulb globe temperature) environmental temperatures, consistent with working in North Western Australia, on iron ore mining staff. METHODS: Core temperature, hydration status, [...]
Purpose: To determine if individuals with type 1 diabetes exhibit impairments in local and whole-body heat loss responses that could impact core temperature regulation during exercise in the heat compared to matched, non-diabetic individuals. Methods: Twelve otherwise healthy individuals with type 1 diabetes (HbA1c = 7.7±0.3%) and 12 controls matched for age, sex, body surface [...]
During periods of extreme heat individuals with diabetes have greater rates of heat-related morbidity and mortality compared to their non-diabetic counterparts. The reason for this discrepancy is currently unknown. Furthermore, there is a lack of information about whether or not individuals with type 1 diabetes are at a thermoregulatory disadvantage during strenuous physical activity especially [...]
Environmental factors, such as storage time, frequency of bottle reuse and temperature, have been shown to facilitate antimony (Sb) leaching from water- and food-packaging materials. The globally escalating consumption of water packaged in Sb-containing bottles, such as that of polyethylene terephthalate (PET), could increase human daily Sb doses. This study set out to investigate the [...]
The Effect of Ice Slushy Ingestion and Mouthwash on Thermoregulation and Endurance Performance in the Heat.
PURPOSE: To establish whether sensory factors associated with cold beverage ingestion exert an ergogenic effect on endurance performance independent of thermoregulatory and/or cardiovascular factors. METHODS: Ten males performed three trials involving 90min steady state cycling (SS) (62% VO2max) in the heat (32.1±0.9°C, 40±2.4% relative humidity) followed by a 4kJ/kg body mass time trial (TT). During [...]
PURPOSE: This work combines and reanalyzes 5 yr of exercise-associated hyponatremia (EAH) research at 161-km ultramarathons in northern California with primary purposes to define the relationship between postrace blood sodium concentration ([Na]) and change in body weight; to examine the interactions among EAH incidence, ambient temperature, and hydration state; and to explore the effect of [...]
Hypohydration and acute thermal stress affect mood state but not cognition or dynamic postural balance.
Equivocal findings have been reported in the few studies that examined the impact of ambient temperature (T a) and hypohydration on cognition and dynamic balance. The purpose of this study was to determine the impact of acute exposure to a range of ambient temperatures (T a 10-40 °C) in euhydration (EUH) and hypohydration (HYP) states on [...]
OBJECTIVE: To assess the symptoms of heat illness experienced by surface mine workers. METHODS: Ninety-one surface mine workers across three mine sites in northern Australia completed a heat stress questionnaire evaluating their symptoms for heat illness. A cohort of 56 underground mine workers also participated for comparative purposes. Participants were allocated into asymptomatic, minor or [...]
PURPOSE: Sufficient intake of oral fluids to meet hydration needs is a critical recovery issue for patients hospitalized post stroke. Concerns for adequate oral fluid intake are generally focused on dysphagic patients restricted to thickened liquids; however, fluid intake patterns in stroke patients receiving thin liquids are unknown. METHOD: This study examines the oral fluid [...]
BACKGROUND: Detection of estrogens in the environment has raised concerns in recent years because of their potential to affect both wildlife and humans. OBJECTIVES: We compared exposures to prescribed and naturally occurring estrogens in drinking water to exposures to naturally occurring background levels of estrogens in the diet of children and adults and to four [...]