Fig. 1
From: Effects of short-term warm water immersion on cardiac baroreflex sensitivity in healthy men
Experimental protocol (a) and typical response of finger arterial pressure waveform to the stand-up challenge (b). In a, white circles on human icons indicate the position of finger blood pressure cuff. The bathtub was empty in the control condition, whereas in the WWI condition warm water was kept in the bathtub at the heart level of each subject. “Stand-up challenge” (black bars) consisted of 5-min sitting and 1-min standing. In b, gray and black lines indicate finger arterial pressure (AP) and R–R interval (RRI), respectively