背景:体力活动是与进食障碍有关的重要因素,但是饮食失调的症状和身体活动之间的关系是多方面的。这项研究的目的是调查饮食障碍(ED)的症状如何与身体活动相关,并从体重指数(BMI)评分中探讨潜在的性别差异和潜在的调节作用。
方法:数据来自对10,172名16至19岁的挪威青少年的大规模人口调查,青年@hordaland调查。主要因变量是每周自我报告的体力活动天数,而主要自变量是使用五项进食障碍筛查(EDS-5)问卷自我报告的ED症状。控制变量包括性别,年龄,社会经济地位,BMI。
结果:女孩报告的ED症状明显多于男孩(M=3.02对1.32,d=0.80,p<0.001),以及每周体力活动天数较少(M=2.88vs.3.46,d=-0.28,p<0.001)。对两性来说,ED的症状与体力活动呈负相关(调整后的平均差异(调整。平均差异)范围从-0.03到-0.08,所有p<0.05)。相互作用分析显示,然而,通过BMI评分,女孩(p<0.01)和男孩(p<0.05),ED症状与体力活动之间的关联均显著减轻.具体来说,在BMI得分较高的青少年中,ED症状与较低的体育锻炼水平有关。
结论:本研究表明,青春期男女的ED症状与体力活动总体呈负相关。然而,ED症状和体力活动水平之间的关联在整个体重范围内差异很大。
BACKGROUND: Physical activity is an important factor related to eating disorders, but the relationship between symptoms of eating disorders and physical activity is multifaceted. The aims of this study were to investigate how symptoms of eating disturbance (ED) were associated with physical activity, and to explore potential sex differences and the potential moderating effects from body mass index (BMI) scores.
METHODS: Data stem from a large population-based survey of 10,172 Norwegian adolescents aged 16 to 19 years, the youth@hordaland-survey. The main dependent variable was self-reported number of days with physical activity per week, while the main independent variable was self-reported symptoms of ED using the five-item Eating Disturbance Screening (EDS-5) questionnaire. Control variables included sex, age, socioeconomic status, and BMI.
RESULTS: Girls reported substantially more symptoms of ED compared with boys (M = 3.02 versus 1.32, d = 0.80, p < 0.001), as well as fewer days with physical activity per week (M = 2.88 versus 3.46, d = - 0.28, p < 0.001). For both sexes, symptoms of ED were negatively associated with physical activity (adjusted mean differences (adj. mean diff) ranging from - 0.03 to - 0.08, all p < 0.05). Interaction analyses showed, however, that associations between symptoms of ED and physical activity were significantly moderated by BMI scores for both girls (p < 0.01) and boys (p < 0.05). Specifically, ED symptoms were associated with lower physical activity levels among adolescents with higher BMI scores.
CONCLUSIONS: The present study indicates that symptoms of ED were overall negatively associated with physical activity for both sexes during adolescence. However, associations between ED symptoms and physical activity levels differed considerably across the weight spectrum.