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. 2016 Sep 1;11(9):e0161819. doi: 10.1371/journal.pone.0161819

Fig 3. Correlations between decrease in VO2max (VO2max SL-ALT, difference between sea level and altitude values) with SpO2 values at the end of exercise at altitude (SpO2max ALT) and with decrease in HRmax (HRmax SL-ALT, difference between sea level and altitude values).

Fig 3

All participants were considered, n = 23.