Menschik David, Ahmed Saifuddin, Alexander Miriam H, Blum Robert Wm
Preventive Medicine Residency, Johns Hopkins University, Baltimore, Maryland, USA.
Arch Pediatr Adolesc Med. 2008 Jan;162(1):29-33. doi: 10.1001/archpediatrics.2007.14.
To examine the relationship between increased physical activity in adolescence and adult weight status.
Cohort study based on data from the National Longitudinal Study of Adolescent Health.
In-home interviews.
A total of 3345 adolescents in grades 8 to 12 with body mass index (calculated as weight in kilograms divided by height in meters squared) data available at baseline and 5 years later. Main Exposures Days per week of curricular and extracurricular physical activity.
Overweight status (body mass index > or =25) 5 years after baseline.
Increasing participation in certain extracurricular physical activities and physical education decreased the likelihood of young adulthood overweight. Regarding extracurricular physical activities, the likelihood of being an overweight adult was reduced most (ie, 48%) by performing certain wheel-related activities (ie, rollerblading, roller skating, skateboarding, or bicycling) more than 4 times per week. Each weekday that adolescents participated in physical education decreased the odds of being an overweight adult by 5%, with participation in all 5 weekdays of physical education decreasing the odds by 28%. In general, physical activity predicted normal-weight maintenance better than weight loss.
These data underscore the important role that school-based and extracurricular physical activity play in reducing the likelihood of transitioning to overweight as young adults.
探讨青少年身体活动增加与成年后体重状况之间的关系。
基于青少年健康全国纵向研究数据的队列研究。
家庭访谈。
共有3345名8至12年级的青少年，在基线时和5年后有体重指数（计算方法为体重千克数除以身高米数的平方）数据。主要暴露因素为每周参与课程和课外体育活动的天数。
基线后5年的超重状况（体重指数≥25）。
增加参与某些课外体育活动和体育课可降低成年后超重的可能性。关于课外体育活动，每周进行超过4次某些与轮子相关的活动（如轮滑、滑冰、滑板或骑自行车），成年后超重的可能性降低最多（即48%）。青少年每个工作日参加体育课，成年后超重的几率降低5%，若5个工作日都参加体育课，超重几率降低28%。总体而言，身体活动对维持正常体重的预测作用优于减肥。
这些数据强调了校内和课外体育活动在降低青少年成年后超重可能性方面所起的重要作用。
