Evaluation of Loss of the Indispensable Trace Elements by Sweating

本研究采用全身臂袋法和桑拿浴法比较桑拿浴与全身臂袋法的差异，并对桑拿浴后人体汗液中微量元素含量的季节差异进行了研究。运动实验在夏季和冬季进行自行车运动，心率控制在140次/min，运动时间为1h，汗液用臂袋收集。桑拿浴中微量元素浓度全身法高于臂袋法，两者无显著相关性。微量元素似乎是通过皮肤污染和汗液蒸发而富集的。在运动中，微量元素浓度往往是在冬季高于夏季。夏季和冬季汗液中微量元素的流失量无显著性差异，提示冬季运动员在大量出汗的情况下会大量排出微量元素。因此，认为出汗对微量元素的清除是运动员微量元素缺乏的诱因。

In the present study, the following were examined : 1) comparison of whole-body and arm bag method, is sauna bathing, 2) seasonal difference of the trace elements concentration in sweat, in exercise.The sauna bathing experiment carried out the dry-type sauna bothing (60℃, 30 min), and the sweat was collected by the whole-body and arm bag method. The exercise experiment carried out bicycle ergometer for 1 hour which regulated the heart rate in 140 beat/minute, in summer and winter, and the sweat was collected by arm bag.Trace elements might be lost by the sweating, in the both experiments. In sauna bathing, trace elements concentrations tended to be higher in the whole-body method than in the arm bag method, and there were no significant correlations between the both method. The trace element seemed to concentration by contamination from skin and evaporation of sweat. In exercise, trace elements concentrations tended to be higher in the winter than in the summer. There was no significant differences between the summer and winter in the loss in trace elements in sweat.The elimination of the remarkable trace element is predicted abundantly perspiring sport men in the much sweating in the winter. It is considered that, therefore, the elimination of the trace elements by the sweating becomes the inducement for trace elements deficiency of the sport men and women.