Evaluation of a wearable fabric-based sensor for accurate sodium determination in sweat during exercise.

Introduction: Newly developed wearable fabric sensors (WFS) can increase the ease and accuracy of sweat sodium measurements by performing simultaneous sampling and analysis on the body during exercise.

Purpose: Determine the accuracy of a WFS for measurement of sodium concentration in sweat.

Methods: Subjects wore a WFS prototype and sweat collectors on their forearm during cycle ergometry.