Gatorade Sports Science Institute, PepsiCo R&D, Barrington, IL,USA.
Epicore Biosystems, Inc., Cambridge, MA,USA.
Int J Sport Nutr Exerc Metab. 2022 Apr 27;32(5):342-349. doi: 10.1123/ijsnem.2022-0017. Print 2022 Sep 1.
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.
本研究旨在比较可穿戴微流控装置和标准吸收贴在测量精英篮球运动员局部出汗率（LSR）和局部汗液氯化物浓度（[Cl-]）方面的效果。参与者为 NBA 发展联盟的 53 名男性篮球运动员（25 ± 3 岁，92.2 ± 10.4kg）。运动员在中等强度的教练指导训练中接受测试（98 ± 30 分钟，21.0 ± 1.2°C）。从右腹侧前臂使用吸收贴（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-]。从左腹侧前臂，使用可穿戴微流控装置和相关智能手机应用程序的基于算法的方法测量 LSR 和局部汗液 [Cl-]。全身出汗率（WBSR）是根据锻炼前后身体质量的变化（根据液体/食物摄入情况进行校正）、尿液损失以及估计的呼吸水和代谢质量损失来确定的。智能手机应用程序中算法预测的 WBSR 值也被记录下来。吸收贴和微流控贴之间的 LSR（1.25 ± 0.91mg·cm-2·min-1 与 1.14 ± 0.78mg·cm-2·min-1，p =.34）或局部汗液 [Cl-]（30.6 ± 17.3mmol/L 与 29.6 ± 19.4mmol/L，p =.55）没有差异。测量值和预测值的 WBSR 之间没有差异（0.97 ± 0.41L/hr 与 0.89 ± 0.35L/hr，p =.22；95%一致性界限= 0.61L/hr）。在精英男性篮球运动员进行中等强度训练时，可穿戴微流控装置与标准现场方法相比，提供了相似的 LSR、局部汗液 [Cl-] 和 WBSR 结果。
