This open, randomised, semi-blinded, controlled trial involves inclusion of 80 adult patients of both genders consecutively admitted as in-patients to cardiac rehabilitation unit after undergoing elective coronary artery by-pass grafting (CABG), valve replacement or repair and/or ascending aorta surgery with sternotomy, and capable of voluntarily providing their written informed consent. The patients are divided in 2 groups, the intervention group receiving OMT and the control group. Both groups are following the same rehabilitation programme and receiving usual care.