抄録
By determining a ceiling for heart rate increase in a given exercise with increment of simulated altitude up to 7, 000m, a reduction of maximum heart rate (HRmax) in acute hypoxia was experimentally ascertained. Such a reduction was similarly observed immediately after a high-altitude expedition. In addition, the reduction rate against altitude was close to that shown previously in chronic hypoxia, indicating that the reduction of HRmax might be independent of altitude acclimatization.
