Figure 4.

Bland-Altman plot of $\dot{V}{O}_{\mathit{2}peak}$ difference (measured − predicted values) vs. mean $\dot{V}{O}_{\mathit{2}peak}$ (black circles). Solid line (average bias = −0.04 ml^.kg^−1.min⁻¹); dashed line indicates 95% limits of agreement. The trend line equation expresses y = 0.28x − 11.9, with r = 0.40 (p = 0.04) with confidence intervals (95%). Gray circles: predicted values based on 5 s average of HR time course (see section Discussion).