Evaluation of a Walking School Bus for Promoting Physical Activity in Youth
Evaluation of a Walking School Bus for Promoting Physical Activity in Youth
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DOI：
10.1123/jpah.6.5.560
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发表时间：
2009-09-01
影响因子：
3.1
通讯作者：
Welk, Gregory J.
中科院分区：
文献类型：
--
作者：
Heelan, Kate A.;Abbey, Bryce M.;Welk, Gregory J.
背景：步行上下学有可能增加儿童的日常身体活动。方法：在 2 所学校实施步行校车 (WSB) 干预，为期 2 年，其中第三所学校作为对照。主要目的是通过 6 次自我报告（秋季、冬季、春季）来评估全校步行上学的流行率。次要目标比较了研究参与者子样本（干预 [INT] = 201，对照 [CON] = 123）之间的客观身体活动水平以及步行去学校的频率。 INT 和 CON 参与者在 4 个时间段内佩戴加速度计来评估日常身体活动，并在每年秋季和春季测量体重指数 (BMI) 和体脂。结果：全校范围内频繁步行上学的比例（每周 > 50% 的时间）在 WSB 学校中比对照学校高 27%。 TNT 获得的每日体力活动明显多于 CON（78.0 [38.9] vs 60.6 [27.7] 分钟/天，P < .05）。此外，在所有学校中，与被动通勤者相比，经常步行的人的身体活动量增加了 25% (P < .05)，体脂减少了 58% (P < .05)，BMI 降低了 50% (P < .05)。结论：这项研究表明，WSB 干预可能会增加步行上学的频率，并与增加日常身体活动建立联系。
Background: Walking to and from school has potential to increase daily physical activity among children. Methods: A Walking School Bus (WSB) intervention was implemented for 2 years in 2 schools with a third school as a control. The primary aim evaluated school-wide prevalence of walking to school by self-report 6 times (fall, winter, spring). The secondary aims compared objective physical activity levels among a subsample of research participants (intervention [INT] = 201, control [CON] =123) and between frequency of walking to school groups. INT and CON participants wore an accelerometer during 4 time periods to assess daily physical activity and were measured for body mass index (BMI) and body fat each fall and spring. Results: School-wide prevalence of walking to school frequently (>50% of the time each week) was 27% higher in the WSB schools than in the control school. TNT obtained significantly more daily physical activity than CON (78.0 [38.9] vs 60.6 [27.7] min/d, P < .05). In addition, across all schools, frequent walkers obtained 25% more physical activity (P < .05), gained 58% less body fat (P < .05), and attenuated BMI by 50% (P < .05) compared with passive commuters. Conclusion: This study suggests a WSB intervention may increase frequency of walking to school and establishes a link with increased daily physical activity.