In this study, school children wore a validated accelerometer and completed the Previous Day Physical Activity Recall for three consecutive days. When applied to the holdout sample, an algorithm of predicted minutes of moderate to vigorous physical activity showed good agreement with the actual...

This study assesses self-reported and objectively measured physical activity among U.S. adults according to the 2008 Physical Activity Guidelines for Americans. The National Health and Nutrition Examination Survey of 2005–2006 found that fewer than 10 percent of U.S. adults met the guidelines....

In this study, school children wore a validated accelerometer and completed the Previous Day Physical Activity Recall for three consecutive days. When applied to the holdout sample, an algorithm of predicted minutes of moderate to vigorous physical activity showed good agreement with the actual...

In this article the authors discuss and develop a statistical model that describes the relationship between an individual's short-term recall of his or her physical activity and usual activity over a long period of time. Modeling measurement error in recall data can be used to provide more...

In this article the authors discuss and develop a statistical model that describes the relationship between an individual's short-term recall of his or her physical activity and usual activity over a long period of time. Modeling measurement error in recall data can be used to provide more...

This study demonstrates the potential of calibrating self-reports of physical activity against objective measures of physical activity in youth, using a commonly used self-report tool called the Physical Activity Questionnaire.

Direct certification simplifies the process of certifying certain children for free school meals by eliminating the need for households to apply. The 2004 Child Nutrition and WIC Reauthorization Act required all local educations agencies (LEAs) to establish a system of direct certification by...