Fig. 1
From: Intermittent face cooling reduces perceived exertion during exercise in a hot environment
Forehead temperature (Tface) in the CONT (a), FC4 (b), FC2 (c), and FC2-20 trials (d). Dashed lines in b, c, and d represent the CONT trial data. Values represent the mean ± SD (gray zone) for 10 participants. CONT, control exercise trial; FC4: facial cooling with 0 °C packs at 4-min intervals; FC2: facial cooling with 0 °C packs at 2-min intervals; FC2-20: facial cooling with 20°C packs at 2-min intervals