The purpose of this study was to compare a wearable microfluidic device and standard absorbent patch in measuring local sweating rate (LSR) and sweat chloride concentration ([Cl⁻]) in elite basketball players. Participants were 53 male basketball players (25 ± 3 years, 92.2 ± 10.4 kg) in the National Basketball Association’s development league. Players were tested during a moderate-intensity, coach-led practice (98 ± 30 min, 21.0 ± 1.2 °C). From the right ventral forearm, sweat was collected using an absorbent patch (3M Tegaderm^™ + Pad). Subsequently, LSR and local sweat [Cl⁻] were determined via gravimetry and ion chromatography. From the left ventral forearm, LSR and local sweat [Cl⁻] were measured using a wearable microfluidic device and associated smartphone application-based algorithms. Whole-body sweating rate (WBSR) was determined from pre- to postexercise change in body mass corrected for fluid/food intake (ad libitum), urine loss, and estimated respiratory water and metabolic mass loss. The WBSR values predicted by the algorithms in the smartphone application were also recorded. There were no differences between the absorbent patch and microfluidic patch for LSR (1.25 ± 0.91 mg·cm⁻²·min⁻¹ vs. 1.14 ±0.78 mg·cm⁻²·min⁻¹, p = .34) or local sweat [Cl⁻] (30.6 ± 17.3 mmol/L vs. 29.6 ± 19.4 mmol/L, p = .55). There was no difference between measured and predicted WBSR (0.97 ± 0.41 L/hr vs. 0.89 ± 0.35 L/hr, p = .22; 95% limits of agreement = 0.61 L/hr). The wearable microfluidic device provides similar LSR, local sweat [Cl⁻], and WBSR results compared with standard field-based methods in elite male basketball players during moderate-intensity practices.

本研究的目的是比较可穿戴微流体装置和标准吸收贴片在测量精英篮球运动员的局部出汗率 (LSR) 和汗液氯化物浓度 ([Cl ^- ]) 方面的情况。参与者是美国国家篮球协会发展联盟的 53 名男性篮球运动员（25 ± 3 岁，92.2 ± 10.4 kg）。球员在中等强度、教练指导的练习中接受测试（98 ± 30 分钟，21.0 ± 1.2 °C）。从右前臂腹侧，使用吸收性贴片（3M Tegaderm ^™  + Pad）收集汗液。随后，通过重量法和离子色谱法测定LSR 和局部汗液 [Cl ^{- ]。}从左腹前臂，LSR 和局部汗液 [Cl ^-] 是使用可穿戴微流体设备和相关的基于智能手机应用程序的算法进行测量的。全身出汗率 (WBSR) 是根据运动前后的体重变化来确定的，该变化校正了液体/食物摄入（随意）、尿液流失以及估计的呼吸水和代谢质量流失。智能手机应用程序中算法预测的 WBSR 值也被记录下来。对于 LSR (1.25 ± 0.91 mg·cm ^-2 ·min ^-1 vs. 1.14 ±0.78 mg·cm ^-2 ·min ^-1 , p  = .34) 或局部汗液 [ Cl ^- ] (30.6 ± 17.3 mmol/L vs. 29.6 ± 19.4 mmol/L, p = .55)。测量的和预测的 WBSR 之间没有差异（0.97 ± 0.41 L/hr 与 0.89 ± 0.35 L/hr，p  = .22；95% 的一致性限制 = 0.61 L/hr）。与标准的基于场地的方法相比，可穿戴微流体装置在中等强度训练期间为精英男篮球运动员提供了相似的 LSR、局部汗液 [Cl ^{- ] 和 WBSR 结果。}