The intervention is an extra 8-week tele-rehabilitative exercise program (3 aerobic and 2 strengthing exercise sessions/week at a moderate intensity, 30 min/session), monitored through a wearable devices and a mobile App. The evaluation of the rehabilitation results can be presented as a data chart, and the treatment effects are also clearly presented. Outcome measures were assessed at baseline, 4, and 8 weeks. Cardiorespiratory fitness was measured before and after the intervention via cardiopulmonary exercise tests.