Rognvaldsdottir Vaka, Valdimarsdottir Berglind M, Brychta Robert J, Hrafnkelsdottir Soffia M, Arngrimsson Sigurbjorn A, Johannsson Erlingur, Chen Kong Y, Gudmundsdottir Sigridur L
Center of Sport and Health Sciences, University of Iceland.
Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases.
Laeknabladid. 2018 Feb;104(2):79-85. doi: 10.17992/lbl.2018.02.173.
Physical activity and sleep are major determinants of overall health. According to international recommendations, adolescents should engage in moderate to vigorous physical activity for at least 60 min each day and sleep eight to ten hours each night. The association between physical activity and sleep in adolescents is not well known. The aim of the study was to estimate a) the proportion of Icelandic adolescents that achieves recommended physical activity and sleep, b) if there is an association between physical activity and sleep patterns, and c) sex differences in physical activity and sleep.
A total of 411 adolescents from the 10th grade in six schools in Reykjavik were invited to participate in a cross-sectional study in the spring of 2015. Valid data was obtained from 106 boys and 160 girls. Objective and subjective measures of physical activity and sleep were made by wrist-worn accelerometers and a questionnaire.
Almost half of the participants fulfilled the physical activity recommendations according to the questionnaire. Although 51.1% reported usually getting enough sleep, only 22.9% achieved the recommended sleep length according to objective assessment. No associations were observed between sleep and subjective physical activity. Girls had higher accelerometer-measured physical activity than boys on non-school days (p<0.01), but weekly averages were not different between sexes. Girls and boys did not differ in subjective or objective measures of sleep.
The behavior of Icelandic adolescents does not reflect recommended amount of sleep and physical activity. Only 22.9% obtained the recommended sleep length and just 11.3% fulfilled recommendations of both sleep and physical activity.
身体活动和睡眠是整体健康的主要决定因素。根据国际建议，青少年每天应进行至少60分钟的中等至剧烈身体活动，每晚睡眠8至10小时。青少年身体活动与睡眠之间的关联尚不清楚。本研究的目的是估计：a）达到推荐身体活动和睡眠量的冰岛青少年比例；b）身体活动与睡眠模式之间是否存在关联；c）身体活动和睡眠方面的性别差异。
2015年春季，邀请了雷克雅未克六所学校10年级的411名青少年参与一项横断面研究。从106名男孩和160名女孩那里获得了有效数据。通过佩戴在手腕上的加速度计和问卷调查对身体活动和睡眠进行客观和主观测量。
根据问卷调查，近一半的参与者达到了身体活动建议量。虽然51.1%的人报告通常睡眠充足，但根据客观评估，只有22.9%的人达到了推荐的睡眠时间。在睡眠与主观身体活动之间未观察到关联。在非上学日，女孩通过加速度计测量的身体活动高于男孩（p<0.01），但两性的每周平均值没有差异。在睡眠的主观或客观测量方面，女孩和男孩没有差异。
冰岛青少年的行为未反映出推荐的睡眠量和身体活动量。只有22.9%的人获得了推荐的睡眠时间，仅有11.3%的人同时满足了睡眠和身体活动的建议。
