منابع مشابه
Performance loss among workers due to heat stress in high-temperature workplaces
Background: Heat stress is one of the harmful factors present in many workplaces. It can lead to performance loss and low functionality of the labor force. Therefore, the aim of this study was to evaluate exposure to heat stress and its consequent performance loss among workers functioning in indoor high-temperature workplaces. Materials and Methods: This descriptive, analytical study was co...
متن کاملLight masking of circadian rhythms of heat production, heat loss, and body temperature in squirrel monkeys.
Whole body heat production (HP) and heat loss (HL) were examined to determine their relative contributions to light masking of the circadian rhythm in body temperature (Tb). Squirrel monkey metabolism ( n = 6) was monitored by both indirect and direct calorimetry, with telemetered measurement of body temperature and activity. Feeding was also measured. Responses to an entraining light-dark (LD)...
متن کاملMetabolic heat production, heat loss and the circadian rhythm of body temperature in the rat.
Metabolic heat production (calculated from oxygen consumption), dry heat loss (measured in a calorimeter) and body temperature (measured by telemetry) were recorded simultaneously at 6 min intervals over five consecutive days in rats maintained in constant darkness. Robust circadian rhythmicity (confirmed by chi square periodogram analysis) was observed in all three variables. The rhythm of hea...
متن کاملHeat loss through the glabrous skin surfaces of heavily insulated, heat-stressed individuals.
Insulation reduces heat exchange between a body and the environment. Glabrous (nonhairy) skin surfaces (palms of the hands, soles of the feet, face, and ears) constitute a small percentage of total body surface area but contain specialized vascular structures that facilitate heat loss. We have previously reported that cooling the glabrous skin surfaces is effective in alleviating heat stress an...
متن کاملConductive and evaporative precooling lowers mean skin temperature and improves time trial performance in the heat.
Self-paced endurance performance is compromised by moderate-to-high ambient temperatures that are evident in many competitive settings. It has become common place to implement precooling prior to competition in an attempt to alleviate perceived thermal load and performance decline. The present study aimed to investigate precooling incorporating different cooling avenues via either evaporative c...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1925
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.11.9.549