Fig. 1: Average 24-h rectal temperature profiles on day 7 (dark solid line) and day 49 (colored solid line) of strict head-down tilt bed rest (HDBR).
From: Regular exercise counteracts circadian shifts in core body temperature during long-duration bed rest

a CTR performed HDBR only (n = 5), b RE performed HDBR plus three times per week high-load resistive exercise (n = 5), c RVE performed the same exercise as RE, but with additional superimposed whole-body vibrations (n = 6). Vertical bars denote standard errors.