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首页> 外文期刊>JAMA pediatrics >Effectiveness of peer-based healthy living lesson plans on anthropometric measures and physical activity in elementary school students a cluster randomized trial
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Effectiveness of peer-based healthy living lesson plans on anthropometric measures and physical activity in elementary school students a cluster randomized trial

机译：基于同伴的健康生活计划对小学生人体测量和身体活动的有效性

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Importance Schools are considered an attractive setting to promote healthy living behaviors in children, but previous school-based interventions aimed at preventing weight gain in children have yielded mixed results. Novel school-based approaches are needed to modify healthy living behaviors and attenuate weight gain in children. Objective To assess the effectiveness of a peer-led healthy living program called Healthy Buddies on weight gain and its determinants when disseminated at the provincial level to elementary school students. Design, Setting, and Participants Cluster-randomized effectiveness trial performed during the 2009-2010 school year. Baseline and follow-up measurements were made in October 2009 and May 2010, respectively. The study was performed in 19 elementary schools in Manitoba, Canada, and included 647 elementary school students aged 6 to 12 years (48%girls). Intervention Schools were randomized to receive regular curriculum or Healthy Buddies lesson plans. Lesson plans were delivered by older (9- to 12-year-old) elementary school students to the younger (6- to 8-year-old) peers and targeted 3 components of health: physical activity, healthy eating, and self-esteem and body image. Main outcomes and measures The primary outcome measureswere the change inwaist circumference and body mass index z score. Secondary outcomes included physical activity (steps per day), cardiorespiratory fitness, self-efficacy, healthy living knowledge, and self-reported dietary intake. Results At baseline, 36%of children were overweight or obese and 11% achieved the recommended 13 500 steps per day. Intention-to-treat analyses showed that waist circumference declined significantly in the intervention group relative to controls: ?1.42 cm (?2.68 to ?0.17; P = .03). Reductions in waist circumference were particularly significant for children who were younger, overweight or obese, or attending First Nations schools. No difference in body mass index z score was observed between groups. Self-efficacy, healthy living knowledge, and dietary intake significantly improved in younger peers who received the intervention compared with students from control schools. No differences were observed in daily step counts or cardiorespiratory fitness between the groups. Conclusions and relevence The implementation of Healthy Buddies lesson plans delivered by older peers within an elementary school setting is an effectivemethod for attenuating increases in central adiposity and improving knowledge of healthy living behaviors among elementary school students. Improvements were achieved with parallel improvements in diet quality, self-efficacy, and knowledge of healthy living.
机译：重要性学校被认为是促进儿童健康生活行为的诱人场所，但是以前旨在防止儿童体重增加的基于学校的干预措施却产生了不同的结果。需要新颖的基于学校的方法来改变健康的生活行为并减轻儿童的体重增加。目的评估同行领导的健康生活计划（健康伙伴）对省级向小学生传播体重增加及其决定因素的效果。设计，设置和参与者在2009-2010学年期间进行了集群随机有效性试验。分别于2009年10月和2010年5月进行了基线和随访测量。这项研究在加拿大曼尼托巴省的19所小学中进行，纳入了647名6至12岁的小学生（48％的女孩）。干预学校被随机分配接受常规课程或“健康伙伴”课程计划。课程计划由年龄较大的（9至12岁）小学生提供给年龄较小的（6至8岁）同龄人，并针对健康的3个组成部分：体育锻炼，健康饮食和自尊和身体形象。主要结局和指标主要结局指标是腰围和体重指数z得分的变化。次要结果包括体育锻炼（每天的步数），心肺健康，自我效能感，健康的生活知识和自我报告的饮食摄入量。结果在基线时，36％的儿童超重或肥胖，11％的儿童每天达到建议的13500步。治疗意向分析显示，干预组的腰围相对于对照组显着下降：？1.42 cm（？2.68至？0.17; P = .03）。腰围的减少对于年龄较小，超重或肥胖或在原住民学校就读的孩子尤为重要。两组之间的体重指数z得分无差异。与对照学校的学生相比，接受干预的年轻同龄人的自我效能，健康的生活知识和饮食摄入量显着提高。两组之间的每日步数或心肺健康状况均未观察到差异。结论与相关性在小学环境中，由老年同龄人提供的“健康伙伴”教案计划的实施是一种有效的方法，可以减轻中央肥胖症的增加，并提高小学生对健康生活行为的了解。饮食质量，自我效能和健康生活知识的同时改善也实现了改善。

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