Climate and physiological heat strain during exercise |
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Authors: | C R de Freitas M G Ryken |
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Institution: | (1) Department of Geography, University of Auckland, Auckland, New Zealand |
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Abstract: | A body-atmosphere energy exchange model (BIODEX) using heat transfer theory and empirical relationships is described which predicts the change in body core temperature during exercise as an index of thermal strain. Index values may be interpreted as the length of the period of activity before the heat load on the body causes internal body temperature to rise to critical levels. The performance of the model tested under controlled laboratory conditions using human subjects was found to be reliable. BIODEX is used to show the thermal significance of midsummer climatic conditions in New Zealand for those jogging out-doors. |
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Keywords: | Human thermal climate Body-atmosphere heat exchange Exercise duration and climate Bioclimatic index Running and heat strain |
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