- refusal to participate expressed by patient or legally authorized representative if they are present - pregnancy or breast-feeding. - acute heart attack (recent 3-6 months) or unstable angina - uncontrolled atrial or ventricular arrhythmias - aortic dissecting aneurysm - severe aortic stenosis - acute endocarditis / pericarditis - uncontrolled high blood pressure (>180/100 mmhg) - acute thromboembolism - acute or severe heart failure - acute or severe respiratory failure - uncontrolled acute decompensated diabetes mellitus or low blood sugar - a recent fracture in the last month. - conditions preventing cooperation

- refusal to participate expressed by patient or legally authorized representative if they are present - pregnancy or breast-feeding. - acute heart attack (recent 3-6 months) or unstable angina - uncontrolled atrial or ventricular arrhythmias - aortic dissecting aneurysm - severe aortic stenosis - acute endocarditis / pericarditis - uncontrolled high blood pressure (>180/100 mmhg) - acute thromboembolism - acute or severe heart failure - acute or severe respiratory failure - uncontrolled acute decompensated diabetes mellitus or low blood sugar - a recent fracture in the last month. - conditions preventing cooperation