BACKGROUND: The purpose of this study was to investigate the effects of a 12-week Taebo exercise on cardiorespiratory fitness and metabolic risk factors in elementary school children. METHODS: A total of 42 children (14 boys and 28 girls), who were recruited from local elementary schools, voluntarily participated in the study. Measurements of body fatness and fitness and metabolic risk factors were repeated prior to and after the intervention. Paired t-tests were performed to explore pre-to-post intervention changes in the measured parameters. RESULTS: Participating in the intervention resulted in significant improvements in resting blood pressures and fasting glucose. Attendance to the intervention was significantly and positively related to improvements in body fatness, cardiorespiratory fitness, and insulin resistance. CONCLUSION: In summary, the present findings of the study suggest that Taebo exercise can be a safe and effective means of improving body fatness and cardiorespiratory fitness as well as several of metabolic risk factors in elementary school children.