Evidence based physical activity for school-age youth.

Department of Pediatrics, Medical College of Georgia, Augusta, Georgia, USA.
Journal of Pediatrics (Impact Factor: 3.74). 07/2005; 146(6):732-7. DOI: 10.1016/j.jpeds.2005.01.055
Source: PubMed

ABSTRACT To review the effects of physical activity on health and behavior outcomes and develop evidence-based recommendations for physical activity in youth.
A systematic literature review identified 850 articles; additional papers were identified by the expert panelists. Articles in the identified outcome areas were reviewed, evaluated and summarized by an expert panelist. The strength of the evidence, conclusions, key issues, and gaps in the evidence were abstracted in a standardized format and presented and discussed by panelists and organizational representatives.
Most intervention studies used supervised programs of moderate to vigorous physical activity of 30 to 45 minutes duration 3 to 5 days per week. The panel believed that a greater amount of physical activity would be necessary to achieve similar beneficial effects on health and behavioral outcomes in ordinary daily circumstances (typically intermittent and unsupervised activity).
School-age youth should participate daily in 60 minutes or more of moderate to vigorous physical activity that is developmentally appropriate, enjoyable, and involves a variety of activities.

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    ABSTRACT: ABSTRACT Soini, Anne Always on the move? Measured physical activity of 3-year-old preschool children Jyväskylä: University of Jyväskylä, 2015, 131 p. (Studies in Sport, Physical Education and Health ISSN 0356-1070; 216) ISBN 978-951-39-6028-5 (nid.) ISBN 978-951-39-6029-2 (PDF) Finnish Summary Diss. This study addressed the following research questions: 1) What physical activity (PA) intensity levels and patterns exist among Finnish 3-year-old preschool children (studies I, II)? 2) Are there variations between Finland and the Netherlands in 3-year-old children’s observed PA levels and contexts in childcare (study III)? 3) Are there variations between Finland and Australia in 3-year-old children’s PA intensity levels measured with accelerometers (study IV)? In Finland, 14 childcare centres in the city of Jyväskylä participated in the study. Data were gathered on 96 three-year-old preschool children (48 boys and 48 girls) in autumn 2010, and on 94 children (50 boys and 44 girls) in winter 2011. Data were also gathered on 97 (46 boys and 51 girls) 3-year-olds from nine childcare centres in Maastricht, the Netherlands, and on 64 (33 boys and 31 girls) 3-year-olds from 13 childcare centres in Melbourne, Australia. Children’s PA intensity levels and sedentary time on five consecutive days, including childcare and homecare days was assessed with ActiGraph GT3X accelerometers. The structured Observational System for Recording Physical Activity in Children-Preschool Version (OSRAC-P) of Brown et al. (2006) was used to obtain descriptive information on the context of PA behaviours in childcare settings. Appropriate statistical analyses were performed. The 3-year-old children spent the major part of their time engaged in sedentary-level activities. During childcare attendance, only 2% of all observations were recorded as moderate to vigorous PA (MVPA). The children were observed, for the most part, in non-solitary play; however, during solitary play they showed higher levels of PA intensity. In autumn, the children were more physically active in the mornings than afternoons. No major differences were observed in PA levels between days or seasons, although levels of outdoor PA were higher in autumn than winter. The Finnish children spent significantly more time in sedentary-level activities and less time in MVPA than the Dutch children, whereas, during childcare days the Finnish children spent more time in light PA than the Australian children. The childcare setting itself plays an important part in promoting more intensive PA behaviour during early childhood. Throughout the year, children should be encouraged to spend a greater amount of their time playing outdoors, engaged in MVPA-level activities, and to minimize the time spent sitting or engaged in sedentary-level activities. Finnish childcare policy makers should take note of these findings as well as of existing international practices and guidelines that have been demonstrated to be beneficial for children’s PA behaviour and thus also health. Keywords: physical activity, sedentary time, accelerometer, direct observation, childcare centre

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May 26, 2014