Effectiveness of 8-Week Exercise Programs in Improving Menstrual Characteristics in Female Adolescents in Saudi Arabia.

This study aimed to evaluate the effectiveness of 8-week exercise programs (aerobic, stretching, and aerobic plus stretching) in improving menstrual characteristics in female adolescents in Saudi Arabia. In this quasi-experimental study, seventy-eight healthy female adolescents aged 12-18 from secondary and high schools in Riyadh participated. Participants were divided into three groups and subjected to different types of exercises (aerobic, stretching, and aerobic plus stretching) for 20-30 min, three times a week.