INTRODUCTION the aim of this study was to assess the validity of a novel wearable sweat rate monitor against an array of sweat analysis techniques which determine sudomotor function when exercising moderately under heat stress. Construct validity was determined utilising a 5-day short-term heat acclimation (STHA) intervention. METHODS Nineteen healthy individuals (age: 41 ± 23 years, body mass: 74.0 ± 12.2 kg, height: 174.9 ± 6.9 cm) [male; n = 15, female; n = 4] completed nine trials over a three-week period, in a controlled chamber set to 35 °C, 50% relative humidity for all sessions. The pre and post-trials were separated by five consecutive controlled hyperthermia HA sessions. Sweat analysis was compared from pre and post-trial, whereby whole body sweat rate (WBSR) was assessed via pre and post nude body mass. Local sweat rate (LSR) was determined via technical absorbent patches (TA) (weighed pre and post) and a novel wearable KuduSmart® (SMART) monitor which was placed on the left arm during the 30-min of exercise. Tegaderm patches, used to measure sweat sodium chloride conductivity (SC), and TA patches were placed on the back, chest and forearm for the 30-min cycling. RESULTS Sudomotor function significantly adapted via STHA (p < 0.05); demonstrated by a WBSR increase of 24%, LSR increase via the TA method (back: 26%, chest: 45% and arm: 48%) and LSR increase by the SMART monitor (35%). Finally, SC decreased (back: -21%, chest: -25% and arm: -24%, p < 0.05). CONCLUSION All sweat techniques were sensitive to sudomotor function adaptation following STHA, reinforcing their validity. The real time data given by the wearable KuduSmart® monitor provides coaches and athletes instant comparable sudomotor function feedback to traditional routinely used sweat analysis techniques.

中文翻译：

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可穿戴式出汗率监测器和使用热适应的常规汗液分析技术的有效性

介绍 本研究的目的是评估一种新型可穿戴出汗率监测器对一系列汗液分析技术的有效性，这些技术可确定在热应激下适度运动时的催汗功能。使用 5 天短期热适​​应 (STHA) 干预确定结构有效性。方法 19 名健康个体（年龄：41 ± 23 岁，体重：74.0 ± 12.2 kg，身高：174.9 ± 6.9 cm）[男性；n = 15，女性；n = 4] 在三周内完成了九次试验，在控制室中设置为 35 °C，所有会话的相对湿度为 50%。试验前和试验后由五个连续的受控热疗 HA 会话分开。对试验前和试验后的汗液分析进行比较，通过前后裸体质量评估全身出汗率 (WBSR)。局部出汗率 (LSR) 是通过技术吸收贴片 (TA)（前后称重）和在 30 分钟运动期间放置在左臂上的新型可穿戴 KuduSmart® (SMART) 监测器来确定的。用于测量汗液氯化钠电导率 (SC) 的 Tegaderm 贴片和 TA 贴片放置在背部、胸部和前臂上，进行 30 分钟的循环。结果 通过 STHA 显着适应催汗功能（p < 0.05）；WBSR 增加了 24%，通过 TA 方法增加了 LSR（背部：26%，胸部：45% 和手臂：48%）和 SMART 监视器的 LSR 增加（35%）。最后，SC 下降（背部：-21%，胸部：-25% 和手臂：-24%，p < 0.05）。结论 所有出汗技术都对 STHA 后的促汗功能适应敏感，加强了它们的有效性。