Journal article

Effect of heat stress on glucose kinetics during exercise

M Hargreaves, D Angus, K Howlett, NM Conus, M Febbraio

JOURNAL OF APPLIED PHYSIOLOGY | AMER PHYSIOLOGICAL SOC | Published : 1996

Abstract

To identify the mechanism underlying the exaggerated hyperglycemia during exercise in the heat, six trained men were studied during 40 min of cycling exercise at a workload requiring 65% peak pulmonary oxygen uptake (VO2peak) on two occasions at least 1 wk apart. On one occasion, the ambient temperature was 20 degrees C [control (Con)], whereas on the other, it was 40 degrees C [high temperature (HT)]. Rates of glucose appearance and disappearance were measured by using a primed continuous infusion of [6,6-2H]glucose No differences in oxygen uptake during exercise were observed between trials. After 40 min of exercise, heart rate, rectal temperature, respiratory exchange ratio, and plasma la..

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