Abstract

Background

Although the association between body mass index (BMI), physical activity (PA) and motor competence (MC) has been widely investigated, the influence of different environmental contexts is not well defined.

Aim

To analyse the relationship between BMI, PA and MC and the moderating role of the environmental context.

Subjects and methods

A cross-sectional study was performed with 668 children (318 boys) aged 5–7 years (north-eastern district – Brazil). MC (Körper koordination test fur Kinder; KTK), BMI and PA (parent reporting) were assessed. To classify three contexts of the environment a variable was created based on the presence of a sports court in school and/or environment for play or sports practice out of school. Multilevel mixed-effects linear regressions, interaction test and estimation of coefficients in moderation analysis were used.

Results

BMI (β = −2.93; p < .01) and age (β = 19.02; p < .01) were associated, and PA was not associated (β = 0.07; p = .05) with MC. The strength of the association between BMI and MC changed based on the environmental contexts. The better the environment context the weaker the association between BMI and MC (β = −2.93, p < .01 to β = −2.38, p = .33 to β = 0.26, p = .94).

Conclusions

The association between BMI and MC is moderated by environmental contexts.

中文翻译：

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儿童体重指数，体育活动和运动能力之间的关联：通过不同环境环境进行的适度分析。

摘要

背景

尽管已经广泛研究了体重指数（BMI），身体活动（PA）和运动能力（MC）之间的关联，但是并没有很好地定义不同环境环境的影响。

目标

分析BMI，PA和MC之间的关系以及环境环境的调节作用。

主题与方法

对668名5至7岁的儿童（318名男孩）（巴西东北部地区）进行了横断面研究。评估了MC（Körper协调测试仪Kinder； KTK），BMI和PA（父母报告）。为了对环境的三种环境进行分类，根据学校中运动场的存在和/或校外运动或体育锻炼的环境创建了变量。使用了多级混合效应线性回归，交互作用测试和适度分析中的系数估计。

结果

BMI（β  = -2.93; p  <.01）和年龄（β  = 19.02; p  <.01）相关，而PA 与MC不相关（β  = 0.07; p = .05）。BMI和MC之间的关联强度根据环境而改变。BMI和MC之间的关联性越好，环境越好（β  = -2.93，p  <.01至β  = -2.38，p  = .33至β  = 0.26，p  = .94）。

结论

BMI和MC之间的关联由环境环境控制。