University of South Australia, Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences, Sansom Institute for Health Research, City East Campus, GPO Box 2471, Adelaide, South Australia, 5001, Australia.
University of South Australia, Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences, Sansom Institute for Health Research, City East Campus, GPO Box 2471, Adelaide, South Australia, 5001, Australia; Diabetes Research Centre, University of Leicester, Leicester, United Kingdom; NIHR Biomedical Research Centre, Leicester, United Kingdom.
Obes Res Clin Pract. 2018 Nov-Dec;12(6):506-512. doi: 10.1016/j.orcp.2018.09.001. Epub 2018 Sep 15.
The importance of different constructs of sedentary behaviours in relation to childhood obesity is uncertain. Thus, this study aimed to investigate relationships between volume, patterns and types of sedentary behaviour and adiposity in children.
A case-control study was undertaken involving 234 children aged 10-13years who were either of a healthy-weight (74 boys, 56 girls) or classified as obese (56 boys, 48 girls). Percent body fat (by dual-energy X-ray absorptiometry) and waist-to-height ratio were assessed. Time, type (television, videogame, computer, eating, passive transport) and bout length of sedentary behaviours were measured using accelerometry and the Multimedia Activity Recall for Children and Adolescents. Time use (total daily energy expenditure, sleep, physical activity), age, household income and Tanner stage were covariates in sex-stratified partial least squares analyses.
Daily energy expenditure and income were negatively associated with adiposity for both sexes. Television time was consistently positively associated with adiposity. In boys only, prolonged bouts of sedentary behaviour and time spent playing video games/computer were positively linked with adiposity. Non-screen sedentary behaviour was negatively associated with adiposity in girls. Independent of total energy expenditure, total sedentary time was only inconsistently associated with fatness.
These data suggest that (1) characteristics of sedentary time other than duration are associated with adiposity in children, and (2) associations may be sex-specific.
不同久坐行为结构与儿童肥胖的关系尚不确定。因此，本研究旨在探讨儿童久坐行为的量、模式和类型与肥胖的关系。
采用病例对照研究，纳入 234 名 10-13 岁儿童，分为健康体重组（74 名男孩，56 名女孩）和肥胖组（56 名男孩，48 名女孩）。采用双能 X 射线吸收法评估体脂百分比和腰高比。使用加速度计和儿童青少年多媒体活动回忆法测量久坐行为的时间、类型（看电视、玩电子游戏、玩电脑、进食、被动交通）和持续时间。性别分层偏最小二乘分析中，将时间使用（总日能量消耗、睡眠、体力活动）、年龄、家庭收入和 Tanner 分期作为协变量。
对于男女两性，每日能量消耗和收入与肥胖呈负相关。看电视时间与肥胖呈正相关。仅在男孩中，长时间久坐行为和玩电子游戏/电脑时间与肥胖呈正相关。非屏幕久坐行为与女孩肥胖呈负相关。除总能量消耗外，总久坐时间与肥胖的相关性不一致。
这些数据表明，（1）除持续时间外，久坐时间的特征与儿童肥胖有关，（2）相关性可能具有性别特异性。
