Physical characteristics cannot be used to predict cooling time using cold-water immersion as a treatment for exertional hyperthermia

Appl Physiol Nutr Metab. 2018 Aug;43(8):857-860. doi: 10.1139/apnm-2017-0619. Epub 2018 Mar 12.


We examined if physical characteristics could be used to predict cooling time during cold water immersion (CWI, 2 °C) following exertional hyperthermia (rectal temperature ≥39.5 °C) in a physically heterogeneous group of men and women (n = 62). Lean body mass was the only significant predictor of cooling time following CWI (R2 = 0.137; P < 0.001); however, that prediction did not provide the precision (mean residual square error: 3.18 ± 2.28 min) required to act as a safe alternative to rectal temperature measurements.

Keywords: caractéristiques physiques; cold water immersion; core temperature; coup de chaleur à l’effort; exertional heat stroke; heat stress; hyperthermia; hyperthermie; immersion en eau froide; physical characteristics; stress thermique; température centrale.

MeSH terms

  • Adult
  • Body Temperature Regulation*
  • Body Weight
  • Cold Temperature*
  • Female
  • Fever / etiology
  • Fever / physiopathology
  • Fever / therapy*
  • Humans
  • Hydrotherapy / methods*
  • Immersion*
  • Male
  • Physical Exertion*
  • Retrospective Studies
  • Running
  • Time Factors
  • Treatment Outcome
  • Young Adult