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(a) Correlation analysis for VO2 predicted vs VO2 actual (b) Bland-Altman analysis for VO2 predicted and VO2 actual for treadmill exercise. (c) Correlation analysis for VO2 predicted vs VO2 actual (d) Bland-Altman analysis for VO2 predicted and VO2 actual for outside walking exercise. In the Bland-Altman plots, the solid black line indicates the mean while the blue dashed lines indicate mean ± 1.96 x standard deviation.
