Functions and characteristics of the skin of water exercise practitioners, and effects of preventive care using mildly acidic water

本研究探讨水中运动教练皮肤的功能与特性，并验证使用弱酸性水进行预防护理的效果。本研究对8名水中运动教练进行了干预，在每次水中运动后，在1个月的时间内，对每位教练的一个前臂和一个小腿分别倒入1升的弱酸性水。将进行干预的左前臂和左下肢与未进行干预的右前臂和右下肢进行比较，我们在每次干预前后测量了前臂和小腿的角质层含水量、pH值、经皮失水量（TEWL）;结果，我们清楚地发现了水中锻炼者的皮肤干燥和屏障功能下降。此外，研究表明，每次水中运动后持续使用弱酸性水可以防止TEWL增加。

We studied the functions and characteristics of the skin of water exercise instructors, and verified the effects of preventive care using mildly acidic water. The study was conducted on 8 water exercise instructors, to whom was made the intervention of pouring mildly acidic water, 1 liter each on one forearm and one lower leg for each instructor, after each water exercise, over a period of 1 month. Comparing the left forearms and the left lower on which interventions were made, with the right forearms and the right lower which underwent no intervention, we measured the water content of the stratum corneum,pH,transepidermal water loss(TEWL) of the forearms and the lower legs, before and after each intervention; as a result, we clearly found cutaneous dryness and decreased barrier functions in water exercise practitioners. In addition, the study suggested that the continuous use of mildly acidic water after each water exercise could prevent TEWL from increasing.