Effects of Profuse Sweating Induced by Exercise on Urinary Uric Acid Excretion in a Hot Environment

10.4077/CJP.2010.AMK060

Li-Ling Huang；Chien-Tsai Huang；Mei-Lien Chen；I-Fang Mao

profuse sweating ； uric acid excretion ； uric acid clearance

The Chinese Journal of Physiology

53卷4期（2010 / 08 / 01）

254 - 261

英文

In order to determine whether exercise-induced profuse sweating could reduce urinary uric acid excretion, we simulated badminton players training and measured their uric acid in urine, sweat and blood during the training period. Thirteen male volunteers who were well-trained badminton players were recruited in this study. On the first 2 days and the last 2 days of the study period none of the subjects engaged in any intense exercise-or activity-inducing profuse sweat, but they accepted routine training 2h per day during the middle 3 days. The results show that mean serum urate levels of thirteen volunteers rose significantly on day 4, when the concentrations increased by 18.2% over day 2 (P＜0.05). The mean ten-hour urinary uric acid excretion of seven volunteers on the 3 training days was significantly less at 178.5μmol/day and 118.3μmol/day than those on the preceding and subsequent days of the training days, respectively (P＜0.05). Furthermore, for six volunteers, the mean ratio of clearance of uric acid to creatinine was 6.6% on day 2, which significantly decreased to 5.4% on day 4 (P＜0.05). It is concluded profuse sweating exercise results in a decrease of urinary uric acid excretion amounts and leads to increased serum uric acid after the exercise. We suggest that persons who take vigorous exercise or are exposed to hot environments need drinking enough fluids to prevent dehydration and maintain adequate urinary output. People with profuse sweat after rigorous exercise are recommended taking sports drinks containing abundant sodium in order to decrease serum uric acid.

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