The lowest resting heart rate of participants at each camp in Mount Everest.

Withdraw: The particular participant didn’t reach this camp.NM: The heart rate is not measured.#Maximum age-related heart rate (MAHR) is calculated by maximal age minus related heart rate, and the unit is beat per minute (bpm).¶The environment characteristics for each camp, including the altitude (meter; m), fraction of inspired oxygen (FiO2), and the amount of mandatory oxygen supply, are shown.The lowest resting heart rates of participants at each camp were presented as the value (%; the percentage compared to MAHR).