Association of physical activity and sedentary time with scoliosis screening positive in Chinese primary and secondary school students: a cohort study in Shanghai

The prevalence of positive scoliosis screening increased with grade level. Longer sedentary time was significantly associated with a higher likelihood of positive scoliosis screening, while no significant association was found between physical activity levels and scoliosis screening outcomes. These findings suggest that reducing sedentary time may be important for scoliosis prevention in students, highlighting the need for targeted interventions to promote healthier daily habits.