Extended Data Figure 10. Ex situ measurement of collected sweat samples using the FISA on a subject during stationary cycling at 150 W.
a, c, The ex situ results of [Na+] (a) and [K+] (c) from the sweat samples collected from the subject's forehead without water intake (~2.5% of body weight dehydration). b, d, The ex situ results of [Na+] (b) and [K+] (d) from the sweat samples collected from the subject's forehead with water intake (150 ml per 5 min).