Evaluation of Loss of the Indispensable Trace Elements by Sweating

本研究主要考察了：1)全身法与臂袋法的比较，是桑拿浴法；2)汗液中微量元素浓度的季节差异，是运动法。桑拿浴实验采用干式桑拿浴（60℃，30 min），汗液采用全身及手臂袋法采集。运动实验在夏季和冬季进行1小时的自行车测力计，将心率控制在140次/分钟，并通过臂袋收集汗液。在这两个实验中，微量元素都可能因出汗而流失。在桑拿浴中，全身法的微量元素浓度高于臂袋法，两者之间无显著相关性。微量元素似乎是通过皮肤污染和汗水蒸发而集中的。在运动中，冬季微量元素浓度高于夏季。汗液中微量元素的损失在夏季和冬季之间没有显著差异。在冬季大量出汗的运动人群中，大量出汗的微量元素被排除。由此认为，出汗对人体微量元素的消除成为男女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.