Background: The circuit exercise program is a continuous method that combines complex training types and is an exercise method that is performed to improve performance by improving basic physical strength such as strength, agility, endurance and muscular endurance. Objectives: To examine the effect of exercise program on pulmonary function of professional volleyball players. Design: Randomized controlled trial. Methods: 22 professional volleyball players were divided into two groups of 11 each. A high intensity interval exercise program and circuit exercise program were performed twice a week for 45 minutes for 4 weeks. Results: The changes in pulmonary function in professional volleyball players were significantly different pre and post the intervention in both groups and the interval exercise program group showed a more significant difference before and after the intervention in Forced Expiratory Volume in 1 Second (FEV1) and Forced Expiratory Volume in 1 Second/Forced Vital Capacity (FEV1/FVC) (P<.05). In addition, there was also a significant difference in FEV1 and FEV1/FVC between two groups (P<.05). Conclusion: The interval exercise program group was effective in improving pulmonary function for professional volleyball players.

This study aimed to evaluate the effect of a weekly circuit-group exercise program on functional performance, flexibility of the trunk and lower extremities, and balance in individuals with chronic stroke who are living in a community. Thirteen community-living individuals (eleven males and two females) with chronic stroke participated in this study. The group exercise program was set up as a weekly circuit application with four stations aiming to strengthen the muscles, increase endurance, improve flexibility, and enhance functional capacity. The average duration of a session was an hour, and the sessions were conducted once a week for six months for a total of 24 sessions. Assessments for functional performance, flexibility of the trunk and lower extremities and balance were conducted four times: before treatment, after one month of treatment, after four months of treatment, and after six months of treatment. There were significant improvements in functional performance and flexibility of the trunk and lower extremities in the given time frame. No significant improvement was observed in balance ability. The findings suggest that a weekly circuit-group exercise program has some benefits in terms of managing the physical symptoms of individuals with mobility problems after stroke. Therefore, this program can be adapted and employed as a community-based rehabilitation program for such patients. Further studies with various community-based treatments will be conducted to validate these findings.