This study compared simultaneous whole body washdown

This study compared simultaneous whole body washdown (WBW) and regional skin surface (REG) sweat collections
to generate regression equations to predict WBW sweat Na concentration (Na ) and K concentration (K ) from
singleand
fivesite
REG sweat patch collections. Athletes (10 men, 10 women) cycled in a plastic chamber for 90
min in the heat. Before exercise, the subject and bike were washed with deionized water. After the onset of
sweating, sterile patches were attached to the forearm, back, chest, forehead, and thigh and removed on saturation.
After exercise, the subject and bike were washed with ammonium sulfate solution to collect all sweat electrolyte loss. Hydration status is