Figure 3. Muscle de-oxygenation ([HHb]) changes (mean values ± SD, n = 9) from the warm-up to the end of the exercise. Muscle de-oxygenation values are expressed as changes from baseline values (i.e. established in a steady state, before the 20 W warm-up). p < 0.05, * Significantly different from warm-up, γ Significantly different from supine cycling.