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Electrolyte loss during exercise in apparently healthy Nigerians
1Department of Physiology, College of Medical Sciences, University of Maiduguri, Nigeria.
Abstract:
Treadmill exercise was performed and electrolyte loss estimated in apparently healthy young adult males. Subjects walked at four mph for 20 minutes at 28.9 +/- 0.2 degrees C (SEM) ambient temperature and 75.3 pc relative humidity. Gradient was incrementally increased from 0 degrees to 4 degrees (0 pc-7 pc) during the 20 minutes. Mean concentrations of sodium, potassium, and chloride in the sweat were 67 +/- 0.1 meg/litre (SEM), 4.3 +/- 0.1 meg/litre (SEM) and 55 +/- 0.9 meg/litre (SEM) respectively. The electrolyte concentration was significantly related to work load and body surface area (p < 0.001). The results indicate that the quantity of electrolytes lost in the sweat of Nigerian males during exercise is close to those of Caucasians under similar conditions.
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