Kitayama Aino, Koohsari Mohammad Javad, Ishii Kaori, Shibata Ai, Oka Koichiro
Graduate School of Sport Sciences, Waseda University, Tokorozawa, Japan.
Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.
Prev Med Rep. 2021 Jun 6;23:101439. doi: 10.1016/j.pmedr.2021.101439. eCollection 2021 Sep.
Sedentary behaviour is associated with risks of detrimental health outcomes. It is crucial to understand how much time people spend in sedentary behaviour and what factors affect too much sedentary time for effective intervention. However, few studies examined the prevalence and the correlates of sedentary behaviour in Japan. Therefore, we assessed total sedentary time and its sociodemographic correlates using a nationally representative sample of adults in Japan. Cross-sectional data from Sports-Life Survey in 2016 and 2018 conducted by Sasagawa Sports Foundation was used. Participants' sociodemographic factors and total sedentary time were collected by questionnaires. We classified those with <8 h/day of total sedentary time as "low-sedentary" and those with ≥8 h/day of total sedentary time as "high-sedentary". A multiple logistic regression model was applied to calculate adjusted odds ratios and 95% confidence intervals (95% CIs) for the association of each variable with the "high-sedentary" group (≥8 h/day). In total, 5,346 participants were included in the analyses. On average, time spent in sedentary behaviour was 5.3 h/day (SD = 3.7) among Japanese adults. The percentage of "high-sedentary" was 25.3% (95% CI: 24.1-26.4) and higher body mass index (≥25 kg/m), being unmarried, unemployment, and higher educational level (graduate school or university) were positively associated with being "high-sedentary". In conclusion, higher sedentary time was among people with higher body mass index, being unmarried, unemployed, and higher education. Intervention for reducing sedentary time should be developed, targeting people with these characteristics.
久坐行为与有害健康后果的风险相关。了解人们在久坐行为中花费多少时间以及哪些因素会影响久坐时间过长，对于进行有效干预至关重要。然而，很少有研究调查日本久坐行为的患病率及其相关因素。因此，我们使用日本成年人的全国代表性样本评估了总久坐时间及其社会人口学相关因素。我们使用了笹川体育基金会在2016年和2018年进行的体育生活调查的横断面数据。通过问卷调查收集参与者的社会人口学因素和总久坐时间。我们将每天总久坐时间<8小时的人归类为“低久坐”，将每天总久坐时间≥8小时的人归类为“高久坐”。应用多元逻辑回归模型计算每个变量与“高久坐”组（≥8小时/天）关联的调整比值比和95%置信区间（95%CI）。分析共纳入5346名参与者。日本成年人平均每天久坐行为的时间为5.3小时（标准差=3.7）。“高久坐”的比例为25.3%（95%CI：24.1-26.4），较高的体重指数（≥25kg/m²）、未婚、失业和较高的教育水平（研究生或大学）与“高久坐”呈正相关。总之，体重指数较高、未婚、失业和受过高等教育的人久坐时间更长。应针对具有这些特征的人群制定减少久坐时间的干预措施。
