Moore Helen Joy, Nixon Catherine A, Lake Amelia A, Douthwaite Wayne, O'Malley Claire L, Pedley Claire L, Summerbell Carolyn D, Routen Ashley C
School of Medicine, Pharmacy and Health, Durham University, Stockton-on-Tees, UK.
J Phys Act Health. 2014 Nov;11(8):1517-24. doi: 10.1123/jpah.2012-0420. Epub 2014 Apr 11.
Evidence suggests that many contemporary urban environments do not support healthy lifestyle choices and are implicated in the obesity pandemic. Middlesbrough, in the northeast of England is one such environment and a prime target for investigation.
To measure physical activity (PA) levels in a sample of 28 adolescents (aged 11 to 14 years) and describe the environmental context of their activity and explore where they are most and least active over a 7-day period, accelerometry and Global Positioning System (GPS) technology were used. Twenty-five of these participants also took part in focus groups about their experiences and perceptions of PA engagement.
Findings indicated that all participants were relatively inactive throughout the observed period although bouts of moderate-vigorous physical activity (MVPA) were identified in 4 contexts: school, home, street, and rural/urban green spaces, with MVPA levels highest in the school setting. Providing access to local facilities and services (such as leisure centers) is not in itself sufficient to engage adolescents in MVPA.
Factors influencing engagement in MVPA were identified within and across contexts, including 'time' as both a facilitator and barrier, perceptions of 'gendered' PA, and the social influences of peer groups and family members.
有证据表明，许多当代城市环境不利于健康的生活方式选择，并且与肥胖症流行有关。英国东北部的米德尔斯堡就是这样一个环境，是调查的主要目标。
为了测量28名青少年（年龄在11至14岁之间）的身体活动（PA）水平，描述他们活动的环境背景，并探究他们在7天内最活跃和最不活跃的地点，使用了加速度计和全球定位系统（GPS）技术。其中25名参与者还参加了关于他们参与PA的经历和看法的焦点小组。
研究结果表明，在观察期内所有参与者的活动量都相对较少，尽管在4种环境中发现了中等到剧烈身体活动（MVPA）的时段：学校、家庭、街道以及农村/城市绿地，其中MVPA水平在学校环境中最高。提供当地设施和服务（如休闲中心）本身并不足以促使青少年参与MVPA。
在不同环境中确定了影响参与MVPA的因素，包括作为促进因素和障碍的“时间”、对“性别化”PA的看法以及同龄人群体和家庭成员的社会影响。
