Luetkemeier Maurie Joe, Hanisko Joseph Michael, Aho Kyle Mathiew
Department of Integrative Physiology and Health Science, Alma College, Alma, MI.
Med Sci Sports Exerc. 2017 Jul;49(7):1432-1436. doi: 10.1249/MSS.0000000000001244.
The popularity of tattoos has increased tremendously in the last 10 yr particularly among athletes and military personnel. The tattooing process involves permanently depositing ink under the skin at a similar depth as eccrine sweat glands (3-5 mm).
The purpose of this study was to compare the sweat rate and sweat Na concentration of tattooed versus nontattooed skin.
The participants were 10 healthy men (age = 21 ± 1 yr), all with a unilateral tattoo covering a circular area at least 5.2 cm. Sweat was stimulated by iontophoresis using agar gel disks impregnated with 0.5% pilocarpine nitrate. The nontattooed skin was located contralateral to the position of the tattooed skin. The disks used to collect sweat were composed of Tygon® tubing wound into a spiral so that the sweat was pulled into the tubing by capillary action. The sweat rate was determined by weighing the disk before and after sweat collection. The sweat Na concentration was determined by flame photometry.
The mean sweat rate from tattooed skin was significantly less than nontattooed skin (0.18 ± 0.15 vs 0.35 ± 0.25 mg·cm·min; P = 0.001). All 10 participants generated less sweat from tattooed skin than nontattooed skin and the effect size was -0.79. The mean sweat Na concentration from tattooed skin was significantly higher than nontattooed skin (69.1 ± 28.9 vs 42.6 ± 15.2 mmol·L; P = 0.02). Nine of 10 participants had higher sweat Na concentration from tattooed skin than nontattooed skin, and the effect size was 1.01.
Tattooed skin generated less sweat and a higher Na concentration than nontattooed skin when stimulated by pilocarpine iontophoresis.
在过去10年中，纹身的流行程度大幅上升，尤其是在运动员和军事人员中。纹身过程涉及将墨水永久沉积在皮肤下，深度与外分泌汗腺相似（3 - 5毫米）。
本研究的目的是比较纹身皮肤与未纹身皮肤的出汗率和汗液钠浓度。
参与者为10名健康男性（年龄 = 21 ± 1岁），均有一侧纹身，覆盖面积至少为5.2平方厘米的圆形区域。使用浸有0.5%硝酸毛果芸香碱的琼脂凝胶盘通过离子导入法刺激出汗。未纹身皮肤位于纹身皮肤的对侧。用于收集汗液的盘由缠绕成螺旋状的泰贡管组成，以便汗液通过毛细作用被吸入管中。通过在收集汗液前后称量盘来确定出汗率。通过火焰光度法测定汗液钠浓度。
纹身皮肤的平均出汗率显著低于未纹身皮肤（0.18 ± 0.15对0.35 ± 0.25毫克·厘米·分钟；P = 0.001）。所有10名参与者纹身皮肤产生的汗液都比未纹身皮肤少，效应大小为 - 0.79。纹身皮肤的平均汗液钠浓度显著高于未纹身皮肤（69.1 ± 28.9对42.6 ± 15.2毫摩尔·升；P = 0.02）。10名参与者中有9名纹身皮肤的汗液钠浓度高于未纹身皮肤，效应大小为1.01。
当通过毛果芸香碱离子导入法刺激时，纹身皮肤产生的汗液较少且钠浓度较高。
