Fig. 2

Curve examples of the local capillary venous oxygen saturation of hemoglobin (SvO_2; red) and the relative hemoglobin amount (rHb, blue) during two fatiguing isometric muscle actions at 60% of the MVIC of the right biceps brachii muscle of one female (37 years, 1.60 m, 58 kg): a HIMA (type I) and b PIMA (type II). Start and stop of loading are indicated by vertical lines. Baseline, slope, end of linear slope part and the global minimum are given. The global Min in b refers to the reversal point. All curves were smoothed (moving average, maximal smoothing width: 50)