Relationship between moderate to vigorous physical activity, screen time and depressive symptoms among middle school students in Guangzhou/
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摘要:
目的 了解广州市中学生中高强度身体活动(moderate to vigorous physical activity, MVPA)、视屏时间(screen time, ST)及抑郁症状现状及其关系, 为制定青少年抑郁防控干预方案提供依据。 方法 采用分层整群随机抽样方法, 对广州市1个城区(5所中学)和1个郊区(3所中学)共2 140名学生进行MVPA、ST及抑郁症状问卷调查。采用Logistic回归方法分析MVPA时间、ST以及两者组合对抑郁症状的影响。 结果 89.72%的中学生MVPA时间未达标, 女生(95.52%)高于男生(84.38%); 67.38%的中学生ST未达标, 男生(69.75%)高于女生(64.81%); 中学生抑郁症状检出率为27.01%, 女生(31.58%)高于男生(22.80%); MVPA、ST未达标率和抑郁症状检出率职业高中与普通高中均高于初中(χ2值分别为6.40, 121.71, 27.37, P值均 < 0.05)。Logistic回归分析显示, MVPA时间与ST对抑郁症状的交互项无统计学意义, 过去7 d MVPA时间达到1 h天数 < 7 d、每天ST>2 h单独对抑郁症状检出率的OR值分别为1.19(P=0.35)和1.93(P < 0.01);将MVPA时间与ST进行组合后发现, 过去7 d MVPA时间达到1 h天数 < 7 d且每天ST>2 h对抑郁症状的OR值最高(OR=2.03, P < 0.05)。 结论 广州市中学生MVPA时间严重不足, ST普遍过长, 抑郁症状检出率较高。MVPA时间不足且ST过长的中学生更易产生抑郁症状。应针对不同类型青少年及其家长开展身体活动和视屏行为健康宣教, 以减少抑郁症状的发生。 Abstract:Objective To describe the prevalence and relationship between moderate to vigorous physical activity(MVPA), screen time (ST) and depressive symptoms among middle school students in Guangzhou, and to provide a reference for adolescent depression prevention and control. Methods Using stratified cluster random sampling method, a total of 2 140 students were selected from one urban area and one suburban country for MVPA, ST and depressive symptoms investigation. Logistic regression was used to analyze relations among MVPA, ST and their combined patterns for depressive symptoms. Results A total of 89.72% students failed to meet the MVPA recommendations, girls (95.52%) were higher than boys(84.38%). Totally 67.38% of the students failed to meet the ST recommendations, boys (69.75%) were higher than girls(64.81%). The prevalence of depressive symptoms was 27.01%, girls (31.58%) higher than boys(22.80%). MVPA, ST failure compliance rate and depression symptoms detection rate of vocational high school and ordinary high school were higher than junior high school (χ2=6.40, 121.71, 27.37, P < 0.05). Logistic regression analysis showed that the OR for depressive symptoms was 1.19 (P=0.35) in students whose MVPA time achieving 1 h < 7 d in the last week, and was 1.93 (P < 0.01) in students with the ST>2 h/d independently, no significant interactions were observed. Students with both MVPA time 1 h < 7 d in the last week and the ST>2 h/d were more likely to report depressive symptoms(OR=2.03, P < 0.05). Conclusion Insufficient MVPA, prolonged ST and high prevalence of depressive symptoms are observed among middle school students in Guangzhou. Students with both insufficient MVPA and prolonged ST are more likely to suffer from depressive symptoms. Specific psychological care and health education regarding physical activity and screen behavior should be implemented to students with different characteristics, as well as their parents for depressive symptom prevention. Motor activity; Fixation, ocular; Time; Depression; Regression analysis; Students -
表 1 不同人口统计学特征中学生过去7 d MVPA和ST未达标率比较
Table 1. Comparison of failed to meet the MVPA and ST recommendations among middle school studentswith different demographic characteristics
组别 人数 MVPA ST 未达标人数 χ2值 未达标人数 χ2值 性别 男 1 114 940(84.38) 71.81** 777(69.75) 5.92* 女 1 026 980(95.52) 665(64.81) 地区 城区 1 325 1 207(91.09) 7.13** 815(61.51) 54.62** 郊区 815 713(87.48) 627(76.93) 学段 初中 1 094 964(88.12) 6.40* 654(59.78) 121.71** 普高 787 721(91.61) 541(68.74) 职高 259 235(90.73) 247(95.37) 合计 2 140 1 920(89.72) 1 442(67.38) 注:()内数字为未达标率/%;*P < 0.05,**P < 0.01。 表 2 不同组别中学生抑郁症状检出率比较
Table 2. Comparison of the detection rates of depressive symptoms in different groups among middle school students
组别 选项 人数 抑郁症状人数 χ2值 P值 性别 男 1 114 254(22.80) 20.88 < 0.01 女 1 026 324(31.58) 地区 城区 1 325 333(25.13) 6.22 < 0.05 郊区 815 245(30.06) 学段 初中 1 094 247(22.58) 27.37 < 0.01 普高 787 263(33.42) 职高 259 68(26.25) 网络成瘾 否 2 069 526(25.42) 79.61 < 0.01 是 71 52(73.24) 受过校园欺凌 否 2 093 550(26.28) 25.85 < 0.01 是 47 28(59.57) 曾被家长打骂 否 1 713 410(23.93) 41.17 < 0.01 是 427 168(39.34) 饮酒 否 1 405 308(21.92) 53.71 < 0.01 是 735 270(36.73) 过去7 d MVPA时间达到 < 7 1 920 530(27.60) 3.35 0.06 1 h天数/d 7 220 48(21.82) 过去7 d每天ST/h >2 1 442 457(31.69) 49.17 < 0.01 ≤2 698 121(17.34) 过去7 d MVPA时间 组1 76 11(14.47) 52.45 < 0.01 与每天ST组合 组2 622 110(17.68) 组3 144 37(25.69) 组4 1 298 420(32.36) 注:()内数字为检出率/%;组1为过去7 d MVPA时间达到1 h天数=7 d且每天ST≤2 h,组2为过去7 d MVPA时间达到1 h天数 < 7 d且每天ST≤2 h,组3为过去7 d MVPA时间达到1 h天数=7 d且每天ST>2 h,组4为过去7 d MVPA时间达到1 h天数 < 7 d且每天ST>2 h。 表 3 中学生MVPA和ST与抑郁症状关系的Logistic回归分析(n=2 140)
Table 3. Logistic regression analysis of depressive symptoms among middle school students in different MVPA and ST(n=2 140)
影响因素 模型1 模型2 模型3 OR值(OR值95%CI) P值 OR值(OR值95%CI) P值 OR值(OR值95%CI) P值 过去7 d MVPA时间达到1 h天数/d < 7 1.04(0.56~2.08) 0.93 1.19(0.83~1.71) 0.35 - - 过去7 d每天ST/h >2 1.63(0.75~3.53) 0.21 1.93(1.52~2.46) < 0.01 - - 过去7 d MVPA时间达到1 h天数×每天ST 1.21(0.54~2.70) 0.65 - - - - 过去7 d MVPA时间达到1 h天数与每天ST组合 组2 - - - - 1.04(0.52~2.08) 0.92 组3 - - - - 1.63(0.75~3.53) 0.21 组4 - - - - 2.03(1.04~3.99) < 0.05 注:调整因素包括性别、学段、网络成瘾行为、校园欺凌、家庭欺凌/暴力、饮酒等情况。 -
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