Radial Pressure Pulse and Heart Rate Variability in Heat- and Cold-Stressed Humans

Figure 1

The experimental procedure is as shown. Initially, the subject rested in the supine position for 18 minutes and then sat up for 2 minutes. Subsequently, the subject lay down again for the measurement. Afterward, the subject sat up and immersed his/her left hand into 45°C water for 2 minutes, and the same variables were measured again. After the heat test, the subject rested another 10 minutes, and the prior procedure was repeated for the immersion of 7°C water.