Division of Intervention and Implementation Research, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
J Adolesc Health. 2011 May;48(5):481-6. doi: 10.1016/j.jadohealth.2010.08.005. Epub 2010 Oct 20.
To examine the relationship between leisure time physical activity in 15-year-old students, and weight status and self-rated health 3 years later.
Data were used from two follow-up waves, one in 2002 (grade 9, age 15 years) and one in 2005 (grade 12, age 18 years) of a cohort of approximately 2,500 adolescents. Adolescents reported height and weight, health behaviors, and self-rated health by a questionnaire at both occasions. Age and gender-specific body mass index cut-off points for thinness, overweight, and obesity were used to assess weight status. Logistic regression analyses were performed with weight status and self-rated health as the outcomes and level of leisure time physical activity as the independent variable. Adjustments were made for parental years of education, student's current smoking habits, and baseline body mass index.
As compared with students who were active for more than 4 hours per week during leisure time, being active 2-4 hours (odds ratio [OR]: 4.15, confidence interval [CI]: 1.62-10.60) and <2 hours (OR: 3.92, CI: 1.30-11.78) predicted thinness in boys. In girls, the risk was smaller and became significant at <2 hours per week (OR: 2.57, CI: 1.38-4.77). Overweight or obesity was not significantly predicted by physical activity. A significant risk of low self-rated health was found at follow-up in boys active for <4 hours per week compared with those active for >4 hours per week.
Physical activity is important to maintain a healthy body weight and for future self-rated health in boys.
探讨 15 岁学生闲暇时间体力活动与 3 年后体重状况和自评健康之间的关系。
数据来自于一个约 2500 名青少年队列的两个随访波，一个在 2002 年（9 年级，15 岁），一个在 2005 年（12 年级，18 岁）。青少年在这两个时间点通过问卷报告身高、体重、健康行为和自评健康。使用年龄和性别特异性的体质量指数截断点来评估体重状况，分为消瘦、超重和肥胖。采用逻辑回归分析，以体重状况和自评健康为结果，以闲暇时间体力活动水平为自变量。调整了父母受教育年限、学生当前吸烟习惯和基线体质量指数。
与每周闲暇时间活动超过 4 小时的学生相比，男生每周活动 2-4 小时（优势比 [OR]：4.15，置信区间 [CI]：1.62-10.60）和<2 小时（OR：3.92，CI：1.30-11.78）与消瘦相关。在女生中，风险较小，每周活动<2 小时时变得显著（OR：2.57，CI：1.38-4.77）。体力活动与超重或肥胖无显著相关性。与每周活动超过 4 小时的男生相比，每周活动<4 小时的男生在随访时自评健康不良的风险显著增加。
体力活动对于维持男孩健康的体重和未来的自评健康很重要。
