Inclusion Criteria:  Aged over 65 years old Fried frailty index fulfill 1-2 criteria Able to walk 6 meters independently Able to understand and follow ≥ 3 instructions  Exclusion Criteria:  Severe hypertension (>180/110mmHg) Peripheral neuropathy History of deep-vein thrombosis (DVT) Cardiovascular diseases (i.e. Heart failure NYHA Classification III or IV, myocardial infarction, pulmonary hypertension, coronary artery stenosis) Neuromuscular diseases (i.e. Stroke, Parkinsons' disease) History of resisted exercise training program within the last 6 months before screening