Liao Yung, Shibata Ai, Ishii Kaori, Oka Koichiro
Department of Health Promotion and Health Education, National Taiwan Normal University, 162, Heping East Road Section 1, Taipei, Taiwan.
Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan.
Int J Behav Med. 2016 Aug;23(4):402-9. doi: 10.1007/s12529-015-9484-0.
Associations between levels of sedentary behavior and depressive symptoms independently and in combination with different levels of physical activity remain unclear.
This study aimed to examine independent and combined associations of physical activity (PA) and sedentary behavior (SB) with depressive symptoms among Japanese adults.
An Internet-based survey collected data on depression levels (Center for Epidemiologic Studies Depression Scale), self-reported time spent in PA and SB (Japanese short version of the International Physical Activity Questionnaire), and sociodemographic variables from 2,914 adults in 2009. Binary logistic regression analyses were conducted to examine the odds ratios (ORs) for being depressed (depression scores ≥16) according to independent PA levels (none, insufficient, sufficient), SB levels (low, moderate, high), and nine combinations of PA and SB categories.
After adjusting for potential confounders, sufficient PA level was found to be related to lower risk of depressive symptoms independently (OR = 0.61), whereas no significant associations were observed between SB levels and depression. In the combined associations, adults in the sufficient PA/high SB (OR = 0.44), sufficient PA/moderate SB (OR = 0.56), and sufficient PA/low SB (OR = 0.57) categories were significantly less likely to have depressive symptoms in comparison with the no PA/high SB category.
Meeting physical activity recommendations is associated with a lower risk of depressive symptoms, regardless of time spent in total sedentary behavior. These results suggest that promoting physical activity may be an effective strategy against depressive symptoms among Japanese adults.
久坐行为水平与抑郁症状之间的关联，以及与不同水平身体活动相结合时的关联仍不明确。
本研究旨在探讨日本成年人中身体活动（PA）和久坐行为（SB）与抑郁症状的独立关联和联合关联。
2009年通过一项基于互联网的调查收集了2914名成年人的抑郁水平数据（流行病学研究中心抑郁量表）、自我报告的PA和SB时间（国际身体活动问卷日本简版）以及社会人口学变量。进行二元逻辑回归分析，以根据独立的PA水平（无、不足、充足）、SB水平（低、中、高）以及PA和SB类别的九种组合，检验抑郁（抑郁评分≥16）的比值比（OR）。
在调整潜在混杂因素后，发现充足的PA水平与较低的抑郁症状风险独立相关（OR = 0.61），而未观察到SB水平与抑郁之间存在显著关联。在联合关联中，与无PA/高SB类别相比，充足PA/高SB（OR = 0.44）、充足PA/中SB（OR = 0.56）和充足PA/低SB（OR = 0.57）类别的成年人患抑郁症状的可能性显著降低。
无论总久坐行为时间如何，达到身体活动建议水平与较低的抑郁症状风险相关。这些结果表明，促进身体活动可能是日本成年人预防抑郁症状的有效策略。
