The cardiovascular challenge of exercising in the heat

José González-alonso, Craig G. Crandall, John M. Johnson

Research output: Contribution to journalArticle

186 Citations (Scopus)

Abstract

Exercise in the heat can pose a severe challenge to human cardiovascular control, and thus the provision of oxygen to exercising muscles and vital organs, because of enhanced thermoregulatory demand for skin blood flow coupled with dehydration and hyperthermia. Cardiovascular strain, typified by reductions in cardiac output, skin and locomotor muscle blood flow and systemic and muscle oxygen delivery accompanies marked dehydration and hyperthermia during prolonged and intense exercise characteristic of many summer Olympic events. This review focuses on how the cardiovascular system is regulated when exercising in the heat and how restrictions in locomotor skeletal muscle and/or skin perfusion might limit athletic performance in hot environments.

Original languageEnglish (US)
Pages (from-to)45-53
Number of pages9
JournalJournal of Physiology
Volume586
Issue number1
DOIs
StatePublished - Jan 1 2008

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Hot Temperature
Dehydration
Muscles
Skin
Fever
Oxygen
Athletic Performance
Cardiovascular System
Cardiac Output
Skeletal Muscle
Perfusion

ASJC Scopus subject areas

  • Physiology

Cite this

The cardiovascular challenge of exercising in the heat. / González-alonso, José; Crandall, Craig G.; Johnson, John M.

In: Journal of Physiology, Vol. 586, No. 1, 01.01.2008, p. 45-53.

Research output: Contribution to journalArticle

González-alonso, José ; Crandall, Craig G. ; Johnson, John M. / The cardiovascular challenge of exercising in the heat. In: Journal of Physiology. 2008 ; Vol. 586, No. 1. pp. 45-53.
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