多组分基于学校的干预对屏幕时间设备的效果和调节因素：Movimente 集群随机对照试验。
Effectiveness and moderators of a multicomponent school-based intervention on screen time devices: the Movimente cluster-randomized controlled trial.
机构信息
Federal University of Santa Catarina - Sports center - Physical Education Department, University campus, Trindade, Florianópolis, SC, 88040-900, Brazil.
Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, 221 Burwood Hwy, Burwood, VIC, 3125, Australia.
出版信息
BMC Public Health. 2021 Oct 13;21(1):1852. doi: 10.1186/s12889-021-11895-2.
BACKGROUND
Interventions targeting reduce screen time in adolescents are urgently needed, mainly in low and middle-income countries because of the lack of evidence. Thus, the aims of the study were to examine the effect of a cluster-randomized controlled trial on screen time (ST) devices among Brazilian adolescents and to identify possible moderators.
METHODS
Movimente was a multicomponent school-based intervention that was performed in 2017 and consisted of teacher training, education curriculum, and environmental improvements. Baseline and post-intervention assessments (over one academic year) were conducted with students aged 10-16 years at baseline (baseline n = 921, [n = 538 intervention group; n = 383 control group]). A self-report questionnaire was used to measure daily minutes of device specific screen time (TV, computer, video games and smartphone) and demographic variables. Linear mixed models were used to examine intervention effects and an exploratory moderation analysis (sex, grade and socioeconomic status) was performed.
RESULTS
The intervention had no significant effects on TV time (β = - 6.4, 95% CI: - 6.1;13.4), game time (β = - 8.2, 95% CI: - 7.2;10.8), computer time (β = 1.1, 95% CI: - 6.3;18.5), smartphone time (β = - 10.2, 95% CI: - 32.5;12.1), screen time (β = - 12.8, 95% CI: - 50.5;24.8), meeting screen time guidelines (OR: 1.29, 95% CI: 0.65,2.57) and meeting screen time guidelines with smartphone (OR: 1.66, 95% CI: 0.37,7.40). There was a significant intervention effect on reducing TV time (β = - 37.1, 95% CI: - 73.0, - 1.3) among 8th grade students only.
CONCLUSIONS
The Movimente intervention was effective only for TV time among 8th grade students. Understanding how school-based interventions can improve adolescents' device specific screen time across age groups is needed. Future strategies should cover all screen-based devices. Further, there is a need for more studies in low- and-middle income countries to assist in the development of effective strategies.
TRIAL REGISTRATION
Clinicaltrials.gov identifier NCT02944318 (25/10/2016).
背景
需要针对减少青少年屏幕时间的干预措施，主要是在中低收入国家，因为缺乏证据。因此，本研究的目的是检验一项针对巴西青少年的基于群组的随机对照试验对屏幕时间（ST）设备的影响，并确定可能的调节因素。
方法
Movimente 是一项多成分的基于学校的干预措施，于 2017 年进行，包括教师培训、教育课程和环境改善。在基线（n=921，n=538 干预组；n=383 对照组）和干预后（一学年以上）进行了学生 10-16 岁的基线评估。使用自我报告问卷测量特定设备的每日屏幕时间（电视、电脑、视频游戏和智能手机）和人口统计学变量。线性混合模型用于检验干预效果，并进行了探索性调节分析（性别、年级和社会经济地位）。
结果
该干预措施对电视时间（β=-6.4，95%CI：-6.1；13.4）、游戏时间（β=-8.2，95%CI：-7.2；10.8）、电脑时间（β=1.1，95%CI：-6.3；18.5）、智能手机时间（β=-10.2，95%CI：-32.5；12.1）、屏幕时间（β=-12.8，95%CI：-50.5；24.8）、符合屏幕时间指南（OR：1.29，95%CI：0.65，2.57）和符合智能手机屏幕时间指南（OR：1.66，95%CI：0.37，7.40）没有显著影响。仅在 8 年级学生中，干预措施对减少电视时间（β=-37.1，95%CI：-73.0，-1.3）有显著效果。
结论
Movimente 干预措施仅对 8 年级学生的电视时间有效。需要了解基于学校的干预措施如何改善不同年龄段青少年特定设备的屏幕时间。未来的策略应涵盖所有基于屏幕的设备。此外，还需要在中低收入国家开展更多研究，以协助制定有效的策略。
试验注册
Clinicaltrials.gov 标识符 NCT02944318（2016 年 10 月 25 日）。
Zotero 插件