THERMOREGULATION DURING EXERCISE IN HIGH HUMIDITY ENVIRONMENTS

Thermoregulatory responses during one hour pedalling on bicycle ergometer were measured in a climatic chamber of 26°C at various humidity levels. Work intensities were 30, 40, 50, 60 and 70% of Vo2max. Relative humidities were 30, 60 and 90%. 1) Oxygen intake remained nearly constant at the same wor...

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Bibliographic Details
Published inJapanese Journal of Physical Fitness and Sports Medicine Vol. 27; no. 1; pp. 11 - 18
Main Authors NIWA, KEN-ICHI, NAKAYAMA, TERUO
Format Journal Article
LanguageEnglish
Published The Japanese Society of Physical Fitness and Sports Medicine 1978
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Summary:Thermoregulatory responses during one hour pedalling on bicycle ergometer were measured in a climatic chamber of 26°C at various humidity levels. Work intensities were 30, 40, 50, 60 and 70% of Vo2max. Relative humidities were 30, 60 and 90%. 1) Oxygen intake remained nearly constant at the same work load and was not influenced by humidity level. 2) At work intensities of more than 60% of Vo2max the elevation of rectal temperature was augmented by increased humidity. 3) The secretion of sweat increased, but the evaporation of sweat decreased with increased humidity, particularly at work intensities of 60% and 70% of Vo2max.
ISSN:0039-906X
1881-4751
DOI:10.7600/jspfsm1949.27.11