Figure 3 . Change in SpO2 during rest, the parallel squat and recovery at 1800AL () and near SL (). SpO2 =arterial oxygen saturation. SL=sea level. 1800AL=1800 m above sea level. Values are meanąSD. ***p < 0.001, Significant difference between 1800AL and near SL (two-way ANOVA for repeated measures, Tukey's post hoc test).