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Physical Activity Surveillance in Parks Using Direct Observation
INTRODUCTION: Primary features of observational public health surveillance instruments are that they are valid, can reliably estimate physical activity behaviors, and are useful across diverse geographic settings and seasons by different users. Previous studies have reported the validity and reliabi...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Centers for Disease Control and Prevention
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879002/ https://www.ncbi.nlm.nih.gov/pubmed/24384304 http://dx.doi.org/10.5888/pcd11.130147 |