ArticleFrontiers in physiology2026
Validity and reliability of a wearable armband for continuous sweat conductivity monitoring during exercise.
Article in Frontiers in physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Sweating is essential for thermoregulation during exercise but causes variable losses of water and sodium chloride (NaCl). Field-based methods to assess these losses are limited by sampling errors and the lack of real-time feedback. This study evaluated the validity and reliability of the BeOne armband for continuous measurement of sweat conductivity, used to estimate sweat [NaCl] equivalent in real time. Methods: Ten armbands were first tested against standard NaCl solutions (5-120 mmol·L Results: Measured values showed minimal bias (0.28 mmol·L Conclusion: The BeOne armband demonstrated excellent analytical validity for sweat conductivity measurement and reliable within-session characterization of conductivity-derived sweat electrolyte dynamics. Although conductivity-based [NaCl] equivalents do not represent a laboratory gold standard and remain sensitive to matrix effects and non-specific ionic contributions, this approach appears sufficiently robust for applied sport-science contexts requiring continuous monitoring.
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