Pizarro Andreia Nogueira, Schipperijn Jasper, Ribeiro José Carlos, Figueiredo António, Mota Jorge, Santos Maria Paula
J Phys Act Health. 2017 Jun;14(6):474-478. doi: 10.1123/jpah.2016-0346. Epub 2017 Mar 2.
Identifying where children spend their activity-time may help define relevant domains for effective PA promotion and better understand the relation between PA and environment. Our study aimed to identify how boys and girls allocate their active time in the different domains.
374 children (201 girls; mean age = 11.7 years) wore an accelerometer and a GPS for 7 days. PALMS software combined data, categorized nonsedentary time and bouts of moderate-to-vigorous physical activity (MVPA). Geographical information system allocated activity into 4 domains: school, leisure, transport and home.
Overall, a higher proportion of time in MVPA was found in the transport domain (45.5%), school (30.5%), leisure (21.3%), and home (2.7%). Gender differences were found for the proportion of time spent across domains. Girls (54.5%) had more MVPA than boys (35.2%) in the transport domain, whereas boys spent more MVPA time in school (37.0%) and leisure (24.9%) than girls (24.7% and 18.1, respectively).
Interventions to increase transport behavior may be relevant for children's MVPA. School is an important domain for boys PA, while for girls increasing the supportiveness of the school environment for PA should be a priority. Strategies should consider gender differences when targeting each domain.
确定儿童在何处度过其活动时间，可能有助于界定有效促进身体活动（PA）的相关领域，并更好地理解PA与环境之间的关系。我们的研究旨在确定男孩和女孩如何在不同领域分配其活动时间。
374名儿童（201名女孩；平均年龄 = 11.7岁）佩戴加速度计和全球定位系统（GPS）7天。PALMS软件整合数据，对非久坐时间和中等到剧烈身体活动（MVPA）的发作进行分类。地理信息系统将活动分配到四个领域：学校、休闲、交通和家庭。
总体而言，MVPA时间占比在交通领域（45.5%）、学校（30.5%）、休闲（21.3%）和家庭（2.7%）中较高。不同领域的时间占比存在性别差异。在交通领域，女孩（54.5%）的MVPA比男孩（35.2%）更多，而在学校（37.0%）和休闲（24.9%）领域，男孩花费的MVPA时间比女孩更多（女孩分别为24.7%和18.1%）。
增加交通行为的干预措施可能与儿童的MVPA相关。学校是男孩进行PA的重要领域，而对于女孩，提高学校环境对PA的支持度应成为优先事项。在针对每个领域制定策略时应考虑性别差异。
