A sweat lactic acid (LA) monitoring system embedded on an armband for evaluation of exercise intensity was fabricated and real‐time LA monitoring of a free‐moving subject was conducted for the first time. The LA monitoring system utilizes an electrochemical biosensor, which uses redox reaction of lactate oxidase immobilized on a screen‐printed carbon graphite electrode. The volunteer wearing the system on the upper arm performed bouldering activity (climbing and 2 minutes rest alternately) in two different difficulty levels (100 degrees and 150 degrees). Different secretion of LA was confirmed (11 µg/cm²/min for the 150 degrees course and 2 µg/cm²/min for the 110 degrees course). This indicates that the LA levels obtained with our system successfully reflected the metabolic status of the subject.

中文翻译：

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通过实时皮肤乳酸监测系统评估运动强度

制作了嵌入臂章的汗液乳酸（LA）监测系统，用于评估运动强度，并首次对自由活动的受试者进行了实时LA监测。洛杉矶监测系统利用电化学生物传感器，该传感器利用固定在丝网印刷的碳石墨电极上的乳酸氧化酶的氧化还原反应。志愿者将系统戴在上臂上，以两种不同的难度级别（100度和150度）进行抱石活动（交替攀爬和休息2分钟）。证实了LA的不同分泌（150度航向为11 µg / cm ² / min，2 µg / cm ²/分钟（对于110度路线）。这表明通过我们的系统获得的LA水平成功地反映了受试者的代谢状况。