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Environmental Factors For Fatigue And Injury In Ultra-Endurance Sports
Published in Youlian Hong, Routledge Handbook of Ergonomics in Sport and Exercise, 2013
Hot environments result in a considerable heat stress, which is compounded by dehydration. The risk of heat illness during high intensity or endurance activities is substantially increased in hot and/or humid environments (Armstrong et al., 2007). The amount of time needed to reach exercise-related exhaustion decreases with increasing temperature, humidity, and dehydration (Armstrong et al., 2007). During increased environmental heat strain, an athlete must adjust for critical variables, such as temperature regulation, hydration status and electrolyte levels, as they can contribute to an impaired performance (Rothenberg and Panagos, 2008).
Environmental Design
Published in Nancy J. Stone, Chaparro Alex, Joseph R. Keebler, Barbara S. Chaparro, Daniel S. McConnell, Introduction to Human Factors, 2017
Nancy J. Stone, Chaparro Alex, Joseph R. Keebler, Barbara S. Chaparro, Daniel S. McConnell
Exposure to extreme heat conditions can cause heat stress or heat illness. An individual might experience fatigue, cramps, heat rash (also known as prickly heat), or worse, heat exhaustion or heat stroke (Kroemer et al., 2001). Excessive sweating, increased heart rate, and an increased core body temperature are all signs of heat stress. It is critical that persons exposed to extreme heat drink plenty of water to reduce the likelihood of these problems, which are related to dehydration and an inability of the body to cool itself.
Human Heat Illness and Prevention
Published in Ken Parsons, Human Heat Stress, 2019
Heat illness ranges from mild cardiovascular and central nervous system disturbance (hypotension and fainting) to evidence of profound cellular damage of the brain, kidneys, liver, and blood clotting mechanisms (heatstroke). The three most prominent illnesses are heat cramps, heat exhaustion, and heatstroke.
Using a physiological manikin to evaluate the effect of foam thermal reinforcement in firefighter turnout construction on heat strain
Published in The Journal of The Textile Institute, 2023
Huipu Gao, A. Shawn Deaton, Roger L. Barker
Heat stress can cause acute disorders, including heat stroke, heat exhaustion, heat cramps, heat syncope, and heat rashes (Coco et al., 2016). Some long-term effects from heat stress may be severe heat illness that can cause permanent damage to vital internal organs, such as the heart, kidneys, and liver (Coco et al., 2016). Even mild amounts of heat stress can cause work performance issues such as loss of hearing, cognitive impairment, as well as psychomotor deterioration (Benor & Shvartz, 1971; Hancock, 1982; 1986; Sawka et al., 2001; 2003).
“The Action Level”®
Published in Journal of Occupational and Environmental Hygiene, 2020
Workers can be at different levels of risk for heat illness due to variations in:Heat exposurePersonal protective equipment (PPE)AgeAll of the above