BACKGROUND AND AIM: We investigated the effects of brief, intense stair climbing on cardiorespiratory fitness (CRF) and cardiometabolic risk factors in young Korean men with obesity. METHODS AND RESULTS: Twenty-four healthy men (age: 25.8 ± 2.4 years, BMI: 27.1 ± 2.5 kg/m CONCLUSION: Brief, intense stair climbing with a total time commitment of 10 min per day is effective for improving VO CLINICAL TRIAL REGISTRATION: KCT0008139.