School of Human Kinetics, University of Ottawa, 125 University Private, Ottawa, Ontario K1N 6N5, Canada.
Department of Kinesiology & Physical Education, University of Toronto, 55 Harbord Street, Toronto, Ontario M5S 2W6, Canada.
Prev Med. 2014 Mar;60:16-20. doi: 10.1016/j.ypmed.2013.12.003. Epub 2013 Dec 11.
A habitual sedentary lifestyle is associated with adverse health outcomes; however, the predictors of sedentary behaviors have not been sufficiently explored to inform the development and delivery of effective interventions to reduce sedentary behaviors. This study examined whether reports of symptoms of depression could predict weekly time spent in sedentary behaviors (i.e., television watching, computer use) 4years later.
Self-reported symptoms of depression were assessed at age 20years (2007-08), and television watching time and computer use were assessed at age 24years (2011-12) in 761 adults (45% men) participating in the Nicotine Dependence in Teens study. Data were analyzed using linear regression analysis, with separate models for men and women.
After controlling for past sedentary behavior, symptoms of depression at age 20years predicted more computer use 4years later in men (R(2)=.21, β=.13, p<.05), but not in women. Symptoms of depression did not predict television watching.
Results highlight the need to distinguish between types of sedentary behaviors as their predictors may differ. Further, they provide support for the hypothesis that psychological factors, in this case symptoms of depression, may relate to select sedentary behaviors in young men.
习惯性久坐的生活方式与不良健康结果有关；然而，久坐行为的预测因素尚未得到充分探讨，无法为制定和实施减少久坐行为的有效干预措施提供信息。本研究旨在探讨抑郁症状的报告是否可以预测 4 年后每周的久坐行为时间（即看电视、使用电脑）。
在尼古丁依赖青少年研究中，对 761 名成年人（45%为男性）进行了调查，在他们 20 岁（2007-08 年）时评估了抑郁症状的自我报告，在他们 24 岁（2011-12 年）时评估了看电视时间和使用电脑的情况。分别对男性和女性进行线性回归分析。
在控制过去久坐行为后，20 岁时的抑郁症状预测 4 年后男性的电脑使用时间增加（R(2)=.21，β=.13，p<.05），但对女性没有影响。抑郁症状与看电视时间无关。
结果强调需要区分不同类型的久坐行为，因为它们的预测因素可能不同。此外，结果支持这样一种假设，即心理因素（在这种情况下为抑郁症状）可能与年轻男性的某些久坐行为有关。
