PRELIMINARY EVALUATION OF AN OBSERVATION
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Tracy A. Larson; Matthew P. Normand; Kristin M. Hustyi
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Article
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2011
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John Wiley and Sons
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English
⚖ 126 KB
👁 1 views
Although mechanical means of measuring physical activity are available, they cannot provide information about the context in which such activity occurs. Therefore, direct-observation systems remain essential tools for studying physical activity. The Observational System for Recording Physical Activi