Fig. 1From: Comparison of low-concentration carbon dioxide-enriched and tap water immersion on body temperature after passive heatingThe experiment protocol. The participants initially sat in a chair for 5 min. During that time, baseline values were measured for each parameter. After the baseline measurements, the participants moved to a bath and were immersed in tap water at 40 °C for 15 min. The participants then moved to another bath and were immersed in tap water or CO2-enriched water at 30 °CBack to article page