title: Electrolyte loss during exercise in apparently healthy Nigerians.
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.
authors.affiliation: Department of Physiology, College of Medical Sciences, University of Maiduguri, Nigeria.
authors.forename: E E
authors.initials: EE
authors.lastname: Otukonyong
authors.forename: D D
authors.initials: DD
authors.lastname: Oyebola
mesh_terms: D000293:Adolescent; D000328:Adult; D044383:Black People; D001830:Body Surface Area; D002712:Chlorides / Q000032:analysis; D005069:Evaluation Studies as Topic; D005080:Exercise Test; D006801:Humans; D008297:Male; D009549:Nigeria; D011188:Potassium / Q000032:analysis; D012964:Sodium / Q000032:analysis; D013542:Sweat / Q000737:chemistry*; D014883:Water-Electrolyte Imbalance / Q000175:diagnosis / Q000209:etiology*
chemical_list: D002712:Chlorides; D012964:Sodium; D011188:Potassium