Social jetlag among Japanese adolescents: Association with irritable mood, daytime sleepiness, fatigue, and poor academic performance
Social jetlag among Japanese adolescents: Association with irritable mood, daytime sleepiness, fatigue, and poor academic performance
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DOI：
10.1080/07420528.2021.1996388
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发表时间：
2021-10-31
影响因子：
2.8
通讯作者：
Tanaka，Hideki
中科院分区：
文献类型：
--
作者：
Tamura，Norihisa;Komada，Yoko;Tanaka，Hideki
社交时差是昼夜节律失调的一种形式，已被认为会导致几种临床症状，如心理/身体健康问题。然而，关于社会时差与一般日间功能(例如，学校生活)之间关系的证据有限。这项横断面研究的目的是：1)估计超过1小时的社交时差的分布；2)全面探讨日本青少年社交时差与易怒情绪、白天嗜睡和学习成绩不佳之间的关系。这项研究包括来自13所初中的4782名年龄在12-15岁之间的学生，他们完成了一份自填式问卷。社交时差被计算为工作日和周末睡眠中点的差异，分类如下：负值，1小时，1-2小时，或≥2小时。结果是易怒情绪，白天嗜睡和学习成绩，用广义线性混合模型进行分析，以检查与社交时差的关系，并对潜在的混杂因素进行调整，如睡眠质量。≥1小时的社会时差分布为51.1%，其中1~2小时(35.8%)和≥2小时(15.3%)。最常见的持续时间是0到1小时(41.0%)，其次是负的社会时差(7.9%)。完全调整后的模型显示，≥1小时的社交时差与易怒情绪、白天嗜睡和学习成绩差的风险增加有关，而负的社交时差只与学习成绩差有关。社交时差在日本青少年中非常普遍，可能是导致易怒情绪、日间困倦和学习成绩不佳的主要风险因素。缩写：BMI，身体质量指数；DLMO，暗淡的褪黑素发作；顺，信心区间；MSF，自由天的睡眠中点；MSFsc，经睡眠校正的MSF；MSW，工作日的睡眠中点；PDSS，儿科日间困倦程度量表。
Social jetlag, a form of circadian misalignment, has been suggested to induce several clinical symptoms such as mental/physical health problems. However, evidence on the association of social jetlag with general daytime functioning (e.g., school life) is limited. This cross-sectional study aimed to 1) estimate the distribution of social jetlag exceeding one hour and 2) comprehensively explore the associations between social jetlag and irritable mood, daytime sleepiness, and poor academic performance among Japanese adolescents. The study included 4,782 students aged 12–15 years, from 13 junior high schools, who completed a self-administered questionnaire. Social jetlag was calculated as the difference in the midpoint of sleep between weekdays and weekends and was categorized as follow: negative, <1 h, 1–2 h, or ≥2 h. Outcomes were irritable mood, daytime sleepiness, and academic performance, which were analyzed with generalized linear mixed models to examine the relations with social jetlag, with adjustments for potential confounders like sleep quality. The distribution of social jetlag of ≥1 h was 51.1%, including 1–2 h (35.8%) and ≥2 h (15.3%). Its most frequently observed duration was 0 to <1 h (41.0%), followed by negative social jetlag (7.9%). The full adjusted model revealed that social jetlag of ≥1 h was associated with elevated risk of irritable mood, daytime sleepiness, and poor academic performance, while negative social jetlag was associated only with poor academic performance. Social jetlag was highly prevalent among Japanese adolescents and could be a major risk factor for irritable mood, daytime sleepiness, and poor academic performance.Abbreviations:BMI, Body mass index; DLMO, Dim light melatonin onset; CIs, Confidence intervals; MSF, The midpoints of sleep on free days; MSFsc, Sleep-corrected MSF; MSW, The midpoints of sleep on weekdays; PDSS, The Pediatric Daytime Sleepiness Scale.