@article{c465655aa5e3400295db5ac9b2884661,
title = "Sweating Rate and Sweat Chloride Concentration of Elite Male Basketball Players Measured With a Wearable Microfluidic Device Versus the Standard Absorbent Patch Method",
abstract = "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{\textquoteright}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{\texttrademark} + 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 preto 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.",
keywords = "algorithms, carbohydrate, electrolytes, smartphone application, tattoos",
author = "Baker, {Lindsay B.} and King, {Michelle A.} and Keyes, {David M.} and Brown, {Shyretha D.} and Engel, {Megan D.} and Seib, {Melissa S.} and Aranyosi, {Alexander J.} and Roozbeh Ghaffari",
note = "Funding Information: The authors thank the G-League and players for participating in this study. The authors also thank Bridget Sopena and Kevin Luhrs for assistance with study set-up; Eric Freese, Anthony Wolfe, Jon Davis, Kris Osterberg, Sarah Stinman, Peter Youngman, and Shanice Johnson for assistance with data collection; and Shankang Xu, Julian Archer, Peter John D. De Chavez, Jessica Wallace, and Jeffrey P. Model for assistance with data analysis. This study was funded by the Gatorade Sports Science Institute, a division of PepsiCo, Inc. This study is registered in clinicaltrials.gov under the clinical trial identifier NCT04679532. Author contributions: This study was designed by Baker and Ghaffari; data were collected by Baker, Keyes, Engel, and King; biochemical analyses of sweat samples was conducted by Brown; data interpretation was completed by Baker, Seib, and Aranyosi; and manuscript write-up was completed by Baker, Seib, Aranyosi, and Ghaffari. All authors approved the final version of the paper. Baker, Keyes, Brown, Engel, and King are employed by the Gatorade Sports Science Institute, a division of PepsiCo, Inc. Seib, Aranyosi, and Ghaffari are employed by Epicore Biosystems, Inc. The views expressed in this manuscript are those of the authors and do not necessarily reflect the position or policy of PepsiCo, Inc. or Epicore Biosystems, Inc. Funding Information: The authors thank the G-League and players for participating in this study. The authors also thank Bridget Sopena and Kevin Luhrs for assistance with study set-up; Eric Freese, Anthony Wolfe, Jon Davis, Kris Osterberg, Sarah Stinman, Peter Youngman, and Shanice Johnson for assistance with data collection; and Shankang Xu, Julian Archer, Peter John D. De Chavez, Jessica Wallace, and Jeffrey P. Model for assistance with data analysis. This study was funded by the Gatorade Sports Science Institute, a division of PepsiCo, Inc. This study is registered in clinicaltrials.gov under the clinical trial identifier NCT04679532. Publisher Copyright: {\textcopyright} 2022 The Authors.",
year = "2022",
doi = "10.1123/ijsnem.2022-0017",
language = "English (US)",
volume = "32",
pages = "342--349",
journal = "International Journal of Sport Nutrition and Exercise Metabolism",
issn = "1526-484X",
publisher = "Human Kinetics Publishers Inc.",
number = "8",
}