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. Author manuscript; available in PMC: 2023 Oct 2.
Published in final edited form as: High Alt Med Biol. 2017 Nov 7;18(4):417–424. doi: 10.1089/ham.2017.0103

Table 1.

Effect of Normobaric Hypoxia

NN21
 NH17
Mean SD Mean SD
VO2 (mL/kg/min)
 Baseline 3.5 0.4 3.7 0.4
 Rest 4.0 0.7 3.8 0.5
 50 W 12.7 1.5 12.1 1.2
 100 W 19.0 2.7 17.9* 2.4
 150 W 28.9 4.9 24.4* 3.9
 Max 46.1 8.9 31.8* 4.1
RER
 Baseline 0.86 0.04 0.86 0.11
 Rest 0.85 0.08 0.87 0.06
 50 W 0.88 0.03 0.91 0.05
 100 W 0.92 0.04 1.01* 0.05
 150 W 0.95 0.03 1.12* 0.08
 Max 1.08 0.05 1.37* 0.13
SpO2 (%)
 Baseline 98.0 0.5 97.9 0.8
 Rest 98.0 1.2 93.3* 3.3
 50 W 96.9 2.1 91.2* 2.1
 100 W 97.3 0.7 91.6* 2.4
 150 W 97.6 1.0 89.9* 2.5
 Max 97.0 1.5 92.8* 3.2
HR (bpm)
 Baseline 69.7 10.0 71.2 7.6
 Rest 67.7 5.9 72.7 9.1
 50 W 91.7 7.5 96.0 6.8
 100 W 112.7 10.2 121.7* 4.9
 150 W 144.8 13.6 155.6* 7.5
 Max 178.4 16.7 174.3 10.9
*

p ≤ 0.05 versus NN21.

NN21, normobaric normoxia; NH17, normobaric hypoxia; VO2, oxygen uptake, RER, respiratory exchange ratio; SpO2, oxygen saturation as measured by pulse oximetry; HR, heart rate; bpm, beats per minute; SD, standard deviation.