Acute High Intensity Interval Training and Blood Flow Restriction

Inclusion Criteria: * Male * Age: 18-40 years * Competed in competitive varsity sports (endurance, tennis, badminton, squash, football, basketball, etc.) at the varsity/club level * Actively training for at least 2 sessions (1 - 1.5h) per week * Healthy (free from illnesses) and no musculoskeletal injuries for the past 6 months * No history of cardiometabolic, vascular diseases or similar conditions (high blood pressure, peripheral vascular diseases, heart diseases, metabolic syndrome, diabetes, stroke, etc.). * Pass pre-participation health screening tests - Physical Activity Readiness Questionnaire for Everyone (PAR-Q+) and Australian Institute of Sport (AIS) Blood Flow Restriction (BFR) pre-screening questionnaire (no history of any risk factors). * Maximal oxygen uptake (VO2max) of ≥40mmol/min/kg during a maximal aerobic cycling test. * Non-smoker * Drink alcohol less than 3 times each week and less than 3 drinks each time Exclusion Criteria: * Any diagnosed form of cardiometabolic disease (CVD, diabetes, metabolic syndrome, hypertension) * Any symptoms contraindication of exercise testing (eg chest pains) * Any balance or dizziness problems * Any chronic medical conditions (whether medicated or not) * Any bone joint problems * Any Physician diagnosed contraindications to exercise