Department of Health and Physical Education, Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, 102-8159, Tokyo, Japan,
Environ Health Prev Med. 2002 May;7(2):60-3. doi: 10.1007/BF02897331.
To clarify the seasonal differences of the trace element excretion in sweat, the trace element concentration in sweat and their loss during exercise were compared between summer and winter.
Sweat samples were collected from ten healthy adult males. Bicycle ergometer exercise was conducted by each subject at a heart rate of 140 beats/min for 1 hour, in summer and in winter. Sweat was collected by the arm bag method.
Concentrations of major (Na, K, Ca, and Mg) and trace elements (Zn, Cu, Fe, Ni, Mn, and Cr) in sweat tended to be lower in summer than in winter, and significantly lower concentrations of Mg (p<0.01), Na, Cu, and Mn (p<0.05) were found in summer. The sweat volume in summer (0.90 L) was 1.7-fold larger than that in winter (0.52 L) (p<0.01). The amount of loss of each element to sweat calculated from the concentrations in sweat and sweat volume showed no significant difference between summer and winter.
It is suggested that there was no significant difference in the amount of loss of trace elements in sweat due to exercise between summer and winter.
为了阐明汗液中微量元素排泄的季节性差异，比较了夏季和冬季运动时汗液中的微量元素浓度及其在汗液中的流失。
收集了 10 名健康成年男性的汗液样本。每位受试者以 140 次/分钟的心率在夏季和冬季进行 1 小时的自行车测功计运动。使用臂袋法收集汗液。
汗液中主要元素（Na、K、Ca 和 Mg）和微量元素（Zn、Cu、Fe、Ni、Mn 和 Cr）的浓度夏季低于冬季，夏季的 Mg（p<0.01）、Na、Cu 和 Mn 的浓度显著降低（p<0.05）。夏季的汗液量（0.90 L）是冬季（0.52 L）的 1.7 倍（p<0.01）。根据汗液浓度和汗液量计算出的每种元素随汗液流失的量在夏季和冬季之间没有显著差异。
提示由于运动导致的夏季和冬季汗液中微量元素的流失量无显著差异。
