From: The role of oxygen-increased respirator in humans ascending to high altitude
Heart rate range(BPM)
115 -130
130 -145
170e
Without OIR
100.9 ± 12.1
158.2 ± 16.2
196.3 ± 15.5
With OIR
119.6 ± 9.1*
182.1 ± 10.5*
223.5 ± 11.3*