Other variables
The median adherence and compliance with the training intervention were both 100% (range: 80–100% and 64–100%, respectively). The median compliance with the nutritional supplements was 98% (range: 0–100%). All three patients that smoked at inclusion succeeded in smoking cessation (two in the control group and one in the intervention group). Intravenous iron was administered in both equal frequencies (75%) and dosages between the groups (1500 mg 