Herman Katya M, Hopman Wilma M, Sabiston Catherine M
Faculty of Kinesiology & Health Studies, University of Regina, Regina, SK, Canada.
Department of Public Health Sciences, Queen's University, Kingston, ON, Canada; Clinical Research Centre, Kingston General Hospital, Kingston, Canada.
Prev Med. 2015 Apr;73:112-6. doi: 10.1016/j.ypmed.2015.01.030. Epub 2015 Feb 4.
Physical activity (PA) and screen time (ST) are associated with self-rated health (SRH) in adults; however, SRH has been less studied among youth, and information about self-rated mental health (SRMH) is lacking. This study examined the associations of PA and ST with SRH and SRMH among adolescents.
Cross-sectional data from the 2011-2012 Canadian Community Health Survey included 7725 participants aged 12-17years, representing 1,820,560 Canadian adolescents. Associations of self-reported PA and ST to SRH and SRMH were assessed, controlling for age, race/ethnicity, smoking, highest household education and weight status.
Excellent/very good SRH was reported by 78% of active vs. 62% of inactive adolescents, and 77% of those meeting vs. 70% of those exceeding ST guidelines (both p<0.001). Excellent/very good SRMH was reported by 81% of active vs. 76% of inactive adolescents, and 84% of those meeting vs. 78% of those exceeding ST guidelines (both p<0.001). Inactive adolescents had twice higher odds of sub-optimal SRH, and inactive girls had 30% greater odds of sub-optimal SRMH. Adolescents exceeding 2h/day ST had 30% greater odds of sub-optimal SRH, and 30-50% greater odds of sub-optimal SRMH.
PA and ST are independently associated with health perceptions among Canadian adolescents. Interventions should consider health perceptions in addition to biomedical outcomes.
身体活动（PA）和屏幕时间（ST）与成年人的自评健康（SRH）相关；然而，青少年中的自评健康研究较少，且缺乏关于自评心理健康（SRMH）的信息。本研究调查了青少年中PA和ST与SRH及SRMH之间的关联。
2011 - 2012年加拿大社区健康调查的横断面数据包括7725名12 - 17岁的参与者，代表1820560名加拿大青少年。评估了自我报告的PA和ST与SRH及SRMH之间的关联，并对年龄、种族/民族、吸烟情况、家庭最高教育水平和体重状况进行了控制。
78%的活跃青少年报告自评健康为优秀/非常好，而不活跃青少年中这一比例为62%；符合ST指南的青少年中这一比例为77%，超过ST指南的青少年中这一比例为70%（两者p<0.001）。81%的活跃青少年报告自评心理健康为优秀/非常好，而不活跃青少年中这一比例为76%；符合ST指南的青少年中这一比例为84%，超过ST指南的青少年中这一比例为78%（两者p<0.001）。不活跃的青少年自评健康不佳的几率高出两倍，不活跃的女孩自评心理健康不佳的几率高出30%。每天屏幕时间超过2小时的青少年自评健康不佳的几率高出30%，自评心理健康不佳的几率高出30 - 50%。
PA和ST与加拿大青少年的健康认知独立相关。干预措施除了考虑生物医学结果外，还应考虑健康认知。
