Nyberg Gisela, Kjellenberg Karin, Fröberg Andreas, Lindroos Anna Karin
Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden.
The Swedish School of Sport and Health Sciences, Stockholm, Sweden.
Acta Paediatr. 2020 Nov;109(11):2342-2353. doi: 10.1111/apa.15251. Epub 2020 Apr 7.
This study investigated objectively measured physical activity and sedentary time by sex, age and socioeconomic status in a large representative sample of Swedish adolescents.
In this cross-sectional national survey between 2016 and 2017, students aged 11-12, 14-15 and 17-18 years from 131 schools were invited to participate. Physical activity and sedentary time were measured objectively with accelerometers for seven consecutive days. Socioeconomic status (parental education) and country of birth were self-reported in a questionnaire. Weight and height were measured by trained staff.
A total of 3477 adolescents participated in the study, and 2419 (73%) had at least 3 days of valid accelerometer data. The results showed that 43% of boys and 23% of girls reached the recommendation of 60 minutes of daily moderate-to-vigorous physical activity. Boys were more physically active than girls in all age groups. Girls with high socioeconomic status were more physically active than girls with low socioeconomic status (P < .001), and this difference was not found in boys.
The majority of Swedish adolescents did not reach the physical activity recommendation, and boys were more active than girls. Effective strategies to increase physical activity, especially among girls with low socioeconomic status, are urgently needed.
本研究在瑞典青少年的一个具有广泛代表性的大样本中，按性别、年龄和社会经济地位对客观测量的身体活动和久坐时间进行了调查。
在2016年至2017年的这项全国性横断面调查中，邀请了来自131所学校的11 - 12岁、14 - 15岁和17 - 18岁的学生参与。使用加速度计连续七天客观测量身体活动和久坐时间。社会经济地位（父母教育程度）和出生国家通过问卷进行自我报告。体重和身高由经过培训的工作人员测量。
共有3477名青少年参与了该研究，其中2419名（73%）有至少3天有效的加速度计数据。结果显示，43%的男孩和23%的女孩达到了每天60分钟中等至剧烈身体活动的建议量。在所有年龄组中，男孩比女孩身体活动更多。社会经济地位高的女孩比社会经济地位低的女孩身体活动更多（P <.001），而在男孩中未发现这种差异。
大多数瑞典青少年未达到身体活动建议量，且男孩比女孩更活跃。迫切需要有效的策略来增加身体活动，尤其是在社会经济地位低的女孩中。
