采用成分分析法研究加拿大学龄前儿童的睡眠时间、久坐时间、身体活动与肥胖指标之间的横断面关联。

Cross-sectional associations between sleep duration, sedentary time, physical activity, and adiposity indicators among Canadian preschool-aged children using compositional analyses.

作者信息

Carson Valerie, Tremblay Mark S, Chastin Sebastien F M

机构信息

Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB, T6G 2H9, Canada.

Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON, K1H 8L1, Canada.

出版信息

BMC Public Health. 2017 Nov 20;17(Suppl 5):848. doi: 10.1186/s12889-017-4852-0.

DOI:10.1186/s12889-017-4852-0

PMID:29219077

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5773862/

Abstract

BACKGROUND

Sleep duration, sedentary behaviour, and physical activity are three co-dependent behaviours that fall on the movement/non-movement intensity continuum. Compositional data analyses provide an appropriate method for analyzing the association between co-dependent movement behaviour data and health indicators. The objectives of this study were to examine: (1) the combined associations of the composition of time spent in sleep, sedentary behaviour, light-intensity physical activity (LPA), and moderate- to vigorous-intensity physical activity (MVPA) with adiposity indicators; and (2) the association of the time spent in sleep, sedentary behaviour, LPA, or MVPA with adiposity indicators relative to the time spent in the other behaviours in a representative sample of Canadian preschool-aged children.

METHODS

Participants were 552 children aged 3 to 4 years from cycles 2 and 3 of the Canadian Health Measures Survey. Sedentary time, LPA, and MVPA were measured with Actical accelerometers (Philips Respironics, Bend, OR USA), and sleep duration was parental reported. Adiposity indicators included waist circumference (WC) and body mass index (BMI) z-scores based on World Health Organization growth standards. Compositional data analyses were used to examine the cross-sectional associations.

RESULTS

The composition of movement behaviours was significantly associated with BMI z-scores (p = 0.006) but not with WC (p = 0.718). Further, the time spent in sleep (BMI z-score: γ = -0.72; p = 0.138; WC: γ = -1.95; p = 0.285), sedentary behaviour (BMI z-score: γ = 0.19; p = 0.624; WC: γ = 0.87; p = 0.614), LPA (BMI z-score: γ = 0.62; p = 0.213, WC: γ = 0.23; p = 0.902), or MVPA (BMI z-score: γ = -0.09; p = 0.733, WC: γ = 0.08; p = 0.288) relative to the other behaviours was not significantly associated with the adiposity indicators.

CONCLUSIONS

This study is the first to use compositional analyses when examining associations of co-dependent sleep duration, sedentary time, and physical activity behaviours with adiposity indicators in preschool-aged children. The overall composition of movement behaviours appears important for healthy BMI z-scores in preschool-aged children. Future research is needed to determine the optimal movement behaviour composition that should be promoted in this age group.

摘要

背景

睡眠时间、久坐行为和身体活动是三种相互依存的行为，它们处于运动/非运动强度连续体上。成分数据分析为分析相互依存的运动行为数据与健康指标之间的关联提供了一种合适的方法。本研究的目的是检验：（1）睡眠、久坐行为、轻度身体活动（LPA）和中度至剧烈身体活动（MVPA）所花费时间的构成与肥胖指标的综合关联；（2）在加拿大学龄前儿童的代表性样本中，睡眠、久坐行为、LPA或MVPA所花费的时间与相对于其他行为所花费时间的肥胖指标之间的关联。

方法

参与者为来自加拿大健康措施调查第2和第3轮的552名3至4岁儿童。久坐时间、LPA和MVPA用Actical加速度计（飞利浦伟康公司，美国俄勒冈州本德）测量，睡眠时间由父母报告。肥胖指标包括基于世界卫生组织生长标准的腰围（WC）和体重指数（BMI）z评分。采用成分数据分析来检验横断面关联。

结果

运动行为的构成与BMI z评分显著相关（p = 0.006），但与WC无关（p = 0.718）。此外，相对于其他行为，睡眠（BMI z评分：γ = -0.72；p = 0.138；WC：γ = -1.95；p = 0.285）、久坐行为（BMI z评分：γ = 0.19；p = 0.624；WC：γ = 0.87；p = 0.614）、LPA（BMI z评分：γ = 0.62；p = 0.213，WC：γ = 0.23；p = 0.902）或MVPA（BMI z评分：γ = -0.0