Wakasa Hana, Kimura Takashi, Hirata Takumi, Tamakoshi Akiko
Department of Public Health, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
Department of Public Health, Faculty of Medicine, Hokkaido University, Sapporo, Japan.
Endocrine. 2025 Jan;87(1):170-177. doi: 10.1007/s12020-024-04014-9. Epub 2024 Aug 31.
The relationship between screen time (ST) and obesity has been demonstrated; however, few studies have differentiated between work-related and leisure-based use in Japanese adults, including older adults. This study aimed to examine the relationship between both work-related and leisure-based ST and obesity in adults.
This cross-sectional study was based on a questionnaire survey conducted in 2018. Overall, 9947 adults were invited; 3161 participants (31.8%) returned the questionnaire. Finally, 2488 participants (597 younger men (YM), 792 younger women (YW), 542 older men (OM), 557 older women (OW)) were included. The main exposures were work-related, leisure-based, and total ST. The outcome was obesity (body mass index ≥ 25 kg/m). Log-binomial regression analysis was used to calculate prevalence ratios (PRs) and confidence intervals (CIs) for obesity with 1-h increments of each ST. Analyses were conducted in all participants and subgroups comprising YM, YW, OM, and OW.
Total ST was significantly associated with obesity in all participants (PR (95% CI) 1.07 (1.04-1.10), YM (1.05 (1.01-1.10)), OM (1.13 (1.05-1.22)), and OW (1.13 (1.02-1.26)). Work-related ST was significantly associated with obesity in all participants (1.08 (1.04-1.12)), YM (1.06 (1.00-1.12)), and OM (1.24 (1.08-1.42)). Leisure-based ST was significantly associated with obesity in all participants (1.09 (1.04-1.14)), YM (1.09 (1.00-1.18)), and YW (1.10 (1.01-1.20)).
ST is associated with obesity in Japanese adults including older adults; particularly, work-related ST is associated with obesity in men, and leisure-based ST, in younger individuals.
屏幕时间（ST）与肥胖之间的关系已得到证实；然而，在日本成年人（包括老年人）中，很少有研究区分与工作相关的屏幕时间使用和基于休闲的屏幕时间使用。本研究旨在探讨成年人中与工作相关的屏幕时间和基于休闲的屏幕时间与肥胖之间的关系。
这项横断面研究基于2018年进行的问卷调查。总共邀请了9947名成年人；3161名参与者（31.8%）回复了问卷。最后，纳入了2488名参与者（597名年轻男性（YM）、792名年轻女性（YW）、542名老年男性（OM）、557名老年女性（OW））。主要暴露因素为与工作相关的屏幕时间、基于休闲的屏幕时间和总屏幕时间。结局指标为肥胖（体重指数≥25kg/m²）。采用对数二项回归分析计算每种屏幕时间每增加1小时时肥胖的患病率比（PRs）和置信区间（CIs）。在所有参与者以及由YM、YW、OM和OW组成的亚组中进行分析。
在所有参与者（PR（95%CI）1.07（1.04 - 1.10））、YM（1.05（1.01 - 1.10））、OM（1.13（1.05 - 1.22））和OW（1.13（1.02 - 1.26））中，总屏幕时间与肥胖显著相关。在所有参与者（1.08（1.04 - 1.12））、YM（1.06（1.00 - 1.12））和OM（1.24（1.08 - 1.42））中，与工作相关的屏幕时间与肥胖显著相关。在所有参与者（1.09（1.04 - 1.14））、YM（1.09（1.00 - 1.18））和YW（1.10（1.01 - 1.20））中，基于休闲的屏幕时间与肥胖显著相关。
在包括老年人在内的日本成年人中，屏幕时间与肥胖相关；特别是，与工作相关的屏幕时间与男性肥胖相关，而基于休闲的屏幕时间与年轻人肥胖相关。
