Coleman Karen J, Geller Karly S, Rosenkranz Richard R, Dzewaltowski David A
Southern California Permanente Medical Group, 100 S Los Robles Ave, 2nd Floor, Pasadena, CA 91101, USA.
J Sch Health. 2008 Dec;78(12):633-40. doi: 10.1111/j.1746-1561.2008.00359.x.
No research to date has extensively described moderate and vigorous physical activity (MVPA) and healthful eating (HE) opportunities in the after-school environment. The current study described the quality of the after-school environment for its impact on children's MVPA and HE.
An alliance of 7 elementary schools and Boys and Girls Clubs who worked with the Cooperative Extension Service in Lawrence, KS, was selected to participate in a larger intervention study. After-school settings were observed for information regarding session type, session context, leader behavior, physical activity, and snack quality using validated instruments such as the System for Observing Fitness Instruction Time. Data presented are baseline measures for all sites.
Participating children (n = 144) were primarily non-Hispanic white (60%) and in fourth grade (69%). After-school sites offered 4 different sessions per day (active recreation, academic time, nonactive recreation, and enrichment activities). Children were provided with a daily snack. On 36% of the days observed, this snack included fruit, fruit juice, or vegetables. There was significantly more time spent in MVPA during free play sessions (69%) compared to organized adult-led sessions (51%). There was also significantly more discouragement of physical activity during organized adult-led sessions (29%) as compared to the free play sessions (6%).
The quality of after-school programs can be improved by providing fruits and vegetables as snacks; offering more free play activities; training the after-school staff in simple, structured games for use in a variety of indoor and outdoor settings; and training after-school staff to promote and model MVPA and HE in and out of the after-school setting.
迄今为止,尚无研究广泛描述课后环境中的中等强度和剧烈身体活动(MVPA)以及健康饮食(HE)机会。本研究描述了课后环境质量对儿童MVPA和HE的影响。
选取了堪萨斯州劳伦斯市7所小学和男孩女孩俱乐部组成的联盟,它们与合作推广服务机构合作,参与一项更大规模的干预研究。使用经过验证的工具,如观察健身指导时间系统,对课后活动场所进行观察,以获取有关活动类型、活动背景、领导者行为、身体活动和零食质量的信息。呈现的数据是所有场所的基线测量值。
参与研究的儿童(n = 144)主要为非西班牙裔白人(60%),且处于四年级(69%)。课后活动场所每天提供4种不同的活动(积极娱乐、学术时间、非积极娱乐和充实活动)。每天会为孩子们提供一份零食。在观察的日子里,有36%的零食包含水果、果汁或蔬菜。与有组织的成人主导活动(51%)相比,自由活动期间用于MVPA的时间显著更多(69%)。与自由活动(6%)相比,有组织的成人主导活动期间对身体活动的阻碍也显著更多(29%)。
通过提供水果和蔬菜作为零食;提供更多自由活动;培训课后工作人员开展适用于各种室内外环境的简单结构化游戏;以及培训课后工作人员在课后环境内外推广和示范MVPA和HE,可以提高课后项目的质量。