Original Article
Evidence Based Physical Activity for School-age Youth

https://doi.org/10.1016/j.jpeds.2005.01.055Get rights and content

Objectives

To review the effects of physical activity on health and behavior outcomes and develop evidence-based recommendations for physical activity in youth.

Study design

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.

Results

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).

Conclusion

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.

Section snippets

Method

Under a contract with the Divisions of Nutrition and Physical Activity and Adolescent and School Health of the Centers for Disease Control and Prevention and the Constella Group, an expert panel was convened to review and evaluate available evidence on the influence of physical activity on several health and behavioral outcomes in youth aged 6 to 18 years. The co-chairs of the panel selected panelists on the basis of expertise in specific areas: adiposity, cardiovascular health (lipids and

Results

Evidence pertaining to the influence of physical activity on each health and behavior outcome in youth is summarized in Table I; available online at http://www.us.elsevierhealth.com/jpeds.

Discussion

Discussions of the benefits of physical activity for youth are often framed in the context of the future health status of the individual. It is also important to consider physical activity as it relates to the multiple demands of childhood and adolescence associated with physical growth, biological maturation, and behavioral development. These processes vary considerably among individuals, occur simultaneously and interact, and provide the backdrop against which youth evaluate their own status

Conclusions

Increasing the level of habitual moderate- to vigorous-intensity physical activity in youth is a health promotion and a disease-prevention strategy. Sedentary youngsters should progress toward the recommended level of physical activity gradually. The recommendations are consistent with presently available scientific evidence and are also in general accord with recommendations promoted by governmental agencies4,311,312 and professional organizations.3,313,314

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