The skin-air temperature gradient and the corresponding rate of dry heat exchange throughout the incremental humidity protocol in a control condition without treatment (CON), following diuretic-induced dehydration (DEH), and with continuous saline infusion (SAL). Tsk, mean skin temperature; Ta, ambient temperature; Pa, ambient vapour pressure. Data are for seven subjects. Note that negative values for dry heat exchange indicate dry heat gain. No effect of treatment was observed for Tsk − Ta and dry heat exchange (P > 0.193).