Rosenberg Dori E, Sallis James F, Conway Terry L, Cain Kelli L, McKenzie Thomas L
Joint Doctoral Program in Clinical Psychology, San Diego State University and University of California, San Deigo, California, USA.
Obesity (Silver Spring). 2006 Oct;14(10):1771-6. doi: 10.1038/oby.2006.204.
To prospectively examine potential benefits of active commuting to school on measures of weight status and physical activity in a sample of youth.
A cohort of students from seven elementary schools was measured four times--in the fall and spring of fourth grade (N = 1083) and fifth grade (N = 924). Participants were classified as active (walking, biking, or skateboarding to school almost every day for baseline analyses or at least 2 d/wk for analyses of consistent active commuting) or non-active commuters to school. Accelerometers were used to measure physical activity. Height, weight, and skinfolds were objectively assessed.
Boys who actively commuted to school had lower BMI (p < 0.01) and skinfolds (p < 0.05) than non-active commuters to school in the fourth grade. Active commuting to school over 2 years was not associated with BMI change or overweight status.
Walking and cycling to school may contribute to preventing excessive weight gain, or leaner children may walk or cycle to school.
前瞻性地研究在一组青少年样本中，积极步行或骑行上学对体重状况和身体活动指标的潜在益处。
对来自七所小学的一组学生进行了四次测量，分别在四年级（N = 1083）和五年级（N = 924）的秋季和春季。参与者被分为积极通勤者（基线分析时几乎每天步行、骑自行车或滑板上学，或在分析持续积极通勤时每周至少2天）和非积极通勤者。使用加速度计测量身体活动。客观评估身高、体重和皮褶厚度。
四年级时，积极步行或骑行上学的男孩比非积极通勤的男孩BMI更低（p < 0.01），皮褶厚度更小（p < 0.05）。两年内积极步行或骑行上学与BMI变化或超重状态无关。
步行和骑自行车上学可能有助于防止体重过度增加，或者较瘦的孩子可能步行或骑自行车上学。
