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Full-Text Articles in Physiology
Heat Exposure And Hypohydration Exacerbate Physiological Strain During Load Carrying, Elizabeth L. Adams, Douglas J. Casa, Robert A. Huggins, Julie K. Demartini, Rebecca L. Stearns, Rachel M. Kennedy, Lindsay J. Distefano, Lawrence E. Armstrong, Carl M. Maresh
Heat Exposure And Hypohydration Exacerbate Physiological Strain During Load Carrying, Elizabeth L. Adams, Douglas J. Casa, Robert A. Huggins, Julie K. Demartini, Rebecca L. Stearns, Rachel M. Kennedy, Lindsay J. Distefano, Lawrence E. Armstrong, Carl M. Maresh
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Heat exposure and hypohydration induce physiological and psychological strain during exercise; however, it is unknown if the separate effects of heat exposure and hypohydration are synergistic when co-occurring during loaded exercise. This study compared separate and combined effects of heat exposure and hypohydration on physiological strain, mood state, and visual vigilance during loaded exercise. Twelve males (mean±SD; age, 20±2 years; body mass, 74.0±8.2 kg; maximal oxygen uptake, 57.0±6.0 mLkg-1min-1) completed 4 trials under the following conditions: euhydrated temperate (EUT), hypohydrated temperate (HYT), euhydrated hot (EUH), and hypohydrated hot (HYH). Exercise was 90 min of treadmill walking (∼50% VO2 max, 5% …