ACCELEROMETER-MEASURED PHYSICAL ACTIVITY IN PORTUGUESE CHILDREN FROM A RURAL AREA: A SCHOOL-BASED CROSS-SECTIONAL STUDY
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This work was supported by PARSUK (Portuguese Association of Researchers and Students in the UK), with funding from the Bilateral Research Fund provided by the Portuguese Foundation for Science and Technology (FCT) and the British Embassy Lisbon / UK Science and Innovation Network through the project. This work was supported by FCT - Foundation for Science and Technology within the Project UIDB/05777/2020.
Young people are leading increasingly sedentary lives replacing physical activity with activities such as watching TV, internet surfing and video gaming. Of particular importance for physical activity promotion are schools where physical activity can be incorporated to improve student health outcomes and cognitive performance. The World Health Organization (WHO) recommends that children engage in at least 60 minutes per day of moderate to vigorous physical activity (MVPA) for children and adolescents (between 5-18 years of age). However, few children follow these recommendations. In Portugal, some data suggest that as few as 7% do so. Furthermore, most physical activity studies take place in urban areas, so little is known about how active children and adolescents are in more rural parts of the country. The Acti-Study is a collaboration between the Instituto Politécnico de Bragança (Portugal) and Ulster University (UK) with the primary aim of assessing MVPA levels in students (age 10-16) from a high school in a rural town, in the Northeast of Portugal. Data collection will take place between September 2022 and January 2023, using a cross-sectional design. Students will receive a study pack containing information materials, a sociodemographic questionnaire and consent form for parental completion, and an assent form for student completion. Optionally, the questionnaire may be completed online. Participants will be informed that participation is voluntary and that they can withdraw at any time. Once children have returned the relevant documents completed and signed, they will be instructed to wear a hip-worn accelerometer (ActiGraph®, either GT3X or GT1M), on an elastic belt, for seven consecutive days (including weekend). Children who return their accelerometer will be rewarded with a 5€ voucher, and with a second one if they wore the accelerometer for a minimum of three days (at least 6h/day and at least one weekend). Data will be analysed through descriptive statistics, mostly in tables, divided by gender. With participant consent, data on anthropometric measures (height and weight), available through the school, will also be used. Primary analysis will consist of percentage of students who meet MVPA guidelines; secondary analyses will include exploring the relationship between sociodemographic variables (e.g., parental education) and MVPA, between parent-reported MVPA and accelerometer MVPA, and between accelerometer MVPA and anthropometric data. The results are expected to provide an understanding of the levels and factors associated with MVPA in rural Portugal, to allow comparison with other samples (e.g., from urban areas), to raise awareness to the problem and stimulate more physical activity initiatives. Study with ethics approval by Ulster University (REC/22/0060).
