Department of Movement and Sport Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium.
Research Foundation Flanders (FWO), 1000 Brussels, Belgium.
Int J Environ Res Public Health. 2018 Sep 3;15(9):1916. doi: 10.3390/ijerph15091916.
To develop effective sedentary behavior interventions aimed at people who are overweight/obese, detailed insight is needed into the contexts of sedentary behavior of these people. Therefore, the aims of this study were to describe the composition of sedentary behavior and to compare context-specific sedentary behaviors between different weight groups. Cross-sectional data were used from a study conducted in 2013⁻2014 among a Flemish sample of adolescents ( = 513), adults ( = 301), and seniors ( = 258). Sixteen context-specific sedentary behaviors were assessed using a validated questionnaire during the week and weekend. Compositional descriptive statistics were performed to determine the relative contribution of context-specific sedentary behaviors in the three age groups. Compositional multivariate analysis of covariance and pairwise comparisons were conducted to examine weight group differences in context-specific sedentary behaviors. The compositional means indicated that the highest proportion of sedentary time was spent at school, at work, and while watching television. Statistically significant differences were found in the composition of sedentary behaviors between healthy weight and overweight/obese participants. In all age groups, socially engaging sedentary behaviors were more prevalent in healthy weight people, whereas socially disengaging behaviors were more prevalent in overweight/obese people. Consequently, the findings of this study suggest that future overweight/obesity interventions should no longer focus on total sedentary time, as not all context-specific sedentary behaviors are associated with overweight/obesity. Instead, it might be better to target specific contexts of sedentary behaviors-preferably those less socially engaging-when aiming to reduce overweight/obesity.
为了开发针对超重/肥胖人群的有效久坐行为干预措施，需要深入了解这些人群久坐行为的背景。因此，本研究的目的是描述久坐行为的构成，并比较不同体重组之间特定于情境的久坐行为。本研究使用了 2013-2014 年在佛兰德青少年（=513）、成年人（=301）和老年人（=258）样本中进行的一项研究的横断面数据。使用经过验证的问卷在一周和周末评估了 16 种特定于情境的久坐行为。采用组成描述性统计来确定三个年龄组中特定于情境的久坐行为的相对贡献。采用组成多变量协方差分析和两两比较来检验特定于情境的久坐行为在不同体重组之间的差异。组成均值表明，在学校、工作和看电视时，久坐时间的比例最高。在健康体重和超重/肥胖参与者之间，特定于情境的久坐行为的构成存在统计学上的显著差异。在所有年龄组中，健康体重人群中更普遍存在社交性的久坐行为，而超重/肥胖人群中更普遍存在社交性不活跃的行为。因此，本研究的结果表明，未来的超重/肥胖干预措施不应再仅仅关注总久坐时间，因为并非所有特定于情境的久坐行为都与超重/肥胖有关。相反，当旨在减少超重/肥胖时，针对特定的久坐行为情境（最好是那些社交性不那么活跃的情境）可能会更好。
