Figure 3. Skeletal muscle capillary density, fibre cross‐section area, percentage area type I fibres, and percentage area type II fibres in untrained healthy controls and patients with chronic heart failure with reduced ejection fraction (HFrEF) before (pre) and after (post) knee‐extensor exercise (KE) training.
Data are presented as mean ± SE. * P < 0.05 post vs. pre; # P < 0.05 HFrEF vs. controls.