Sleep deficiency on school days in Icelandic youth, as assessed by wrist accelerometry
Sleep deficiency on school days in Icelandic youth, as assessed by wrist accelerometry
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DOI：
10.1016/j.sleep.2016.12.028
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发表时间：
2017-05-01
期刊：
影响因子：
4.8
通讯作者：
Johannsson, Erlingur
中科院分区：
文献类型：
--
作者：
Rognvaldsdottir, Vaka;Gudmundsdottir, Sigridur L.;Johannsson, Erlingur
目的：本研究的目的是通过腕带式体动记录仪客观地测量冰岛青少年的自由生活睡眠模式，并比较上学日 (SchD) 和非上学日 (NSchD) 之间的睡眠持续时间、睡眠质量和时钟时间以及睡眠与体重指数 (BMI) 之间的关联。 方法：对来自冰岛雷克雅未克六所学校的 15.9 岁 (+/- 0.3) 青少年进行横断面研究，实验发生在 2015 年春天。使用腕戴式体动记录仪加速度计对 301 名受试者（122 名男孩和 179 名女孩）进行了 7 天的自由生活睡眠测量。酌情使用配对和分组 t 检验，对 SchD 和 NSchD 之间以及性别之间的总休息时间 (TRT)、总睡眠时间 (TST)、睡眠质量标记和睡眠时钟时间进行量化和比较。使用线性回归评估睡眠参数与 BMI 之间的关联。结果：在 SchD 中，该组的 TST 为 6.2 +/- 0.7 小时，睡眠效率 (SLE) 为 87.9 +/- 4.4%。对于 NSchD，TST 增加至 7.3 +/- 1.1 小时 (p < 0.001)，但 SLE 下降至 87.4 +/- 4.7% (p < 0.05)。对于 SchD 和 NSchD，分别有 67% 和 93% 的人在午夜之后就寝，而对于 SchD，10.7% 的人符合睡眠建议（8 小时/晚）。 BMI 和平均睡眠参数之间没有关联。结论：大多数冰岛青少年没有获得建议的睡眠时数，尤其是在 SchD 期间。虽然 NSchD 的 TST 有所增加，但许多参与者仍然没有达到建议。这些研究结果提供了有关青少年睡眠模式的信息，并可作为制定政策和干预措施以促进更好的睡眠习惯的参考。 (C) 2017 年由 Elsevier B.V. 出版
Aims: The purpose of this study was to objectively measure, with wrist-worn actigraphy, free-living sleeping patterns in Icelandic adolescents, and to compare sleep duration, sleep quality and clock times between school days (SchD) and non-school days (NSchD) and the association between sleep and body mass index (BMI).Methods: A cross-sectional study on 15.9-year-old (+/- 0.3) adolescents from six schools in Reykjavik, Iceland, took place in the spring of 2015. Free-living sleep was measured on 301 subjects (122 boys and 179 girls) over seven days using wrist-worn actigraphy accelerometers. Total rest time (TRT), total sleep time (TST), sleep quality markers, and clock times for sleep were quantified and compared between SchD and NSchD and between the sexes, using paired and group t-tests as appropriate. Linear regression was used to assess the association between sleep parameters and BMI.Results: On SchD, TST was 6.2 +/- 0.7 h, with sleep efficiency (SLE) of 87.9 +/- 4.4% for the group. On NSchD, TST increased to 7.3 +/- 1.1 h (p < 0.001), although SLE decreased to 87.4 +/- 4.7% (p < 0.05). On SchD and NSchD, 67% and 93% had bed times after midnight, respectively, and on SchD 10.7% met sleep recommendations (8 h/night). There was no association between BMI and average sleep parameters.Conclusion: The majority of Icelandic adolescents did not get the recommended number of hours of sleep, especially on SchD. While TST increased on NSchD, many participants still did not achieve the recommendations. These findings provide information on the sleep patterns of adolescents and may serve as reference for development of policies and interventions to promote better sleep practices. (C) 2017 Published by Elsevier B.V.