Efficacy of a school-based physical activity and nutrition intervention on child weight status: Findings from a cluster randomized controlled trial
Efficacy of a school-based physical activity and nutrition intervention on child weight status: Findings from a cluster randomized controlled trial
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DOI：
10.1016/j.ypmed.2021.106822
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发表时间：
2021-10-01
影响因子：
5.1
通讯作者：
Wolfenden, Luke
中科院分区：
文献类型：
--
作者：
Barnes, Courtney;Hall, Alix;Wolfenden, Luke
尽管析因设计在量化不同的以学校为基础的方法预防学生不健康体重增加的相对好处方面有好处，但很少有人采用。这项2×2随机因素试验的目的是评估体力活动和营养干预对儿童体重状况和生活质量的影响。澳大利亚新南威尔士州的12所小学被随机分配到四个小组之一：(I)体育活动(计划150分钟的校内体育活动)；(Ii)营养(健康的学校午餐盒)；(Iii)体力活动与营养相结合；或(Iv)控制力。在基线和基线后9个月收集评估儿童体重和生活质量的结果数据。在参与学校的4-6年级，742名学生在基线和随访时参与了人体测量，包括儿童体重指数(BMI)和腰围。结果表明，接受营养干预的学生被归入体重不足/健康体重类别的几率较高(OR1.64，95%CI1.07，2.5；p=0.0220)，而接受体育活动干预的学生腰围较低(平均差异-1.86 95%CI3.55，-0.18；p=0.030)。营养或体力活动干预对儿童BMI评分或儿童生活质量没有显著影响，两种干预措施的联合也没有显著的协同效应。为了更好地了解这两种干预策略对儿童健康的潜在影响，有必要进行未来的研究，评估这两种干预策略单独和联合使用的长期影响。
Despite the benefits of factorial designs in quantifying the relative benefits of different school-based approaches to prevent unhealthy weight gain among students, few have been undertaken. The aims of this 2 x 2 cluster randomized factorial trial was to evaluate the impact of a physical activity and nutrition intervention on child weight status and quality of life. Twelve primary schools in New South Wales, Australia randomly allocated to one of four groups: (i.) physical activity (150 min of planned in-school physical activity); (ii.) nutrition (a healthy school lunch-box); (iii.) combined physical activity and nutrition; or (iv.) control. Outcome data assessing child weight and quality of life were collected at baseline and 9-months post-baseline. Within Grades 4-6 in participating schools, 742 students participated in anthropometric measurements, including child body mass index (BMI) and waist circumference, at baseline and follow-up. Findings indicated that students that received the nutrition intervention had higher odds of being classified in the BMI category of underweight/healthy weight (OR 1.64 95%CI 1.07, 2.50; p = 0.0220), while those who received the physical activity intervention reported a lower waist circumference (mean difference -1.86 95%CI-3.55,-0.18; p = 0.030). There were no significant effects of the nutrition or physical activity intervention on child BMI scores or child quality of life, and no significant synergistic effects of the two interventions combined. Future research assessing the longer-term impact of both intervention strategies, alone and combined, is warranted to better understand their potential impact on child health.