P
Patty S. Freedson
Researcher at University of Massachusetts Amherst
Publications - 276
Citations - 29884
Patty S. Freedson is an academic researcher from University of Massachusetts Amherst. The author has contributed to research in topics: VO2 max & Physical fitness. The author has an hindex of 55, co-authored 273 publications receiving 27503 citations. Previous affiliations of Patty S. Freedson include Stanford University & University of California.
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Journal ArticleDOI
Calibration of the Computer Science and Applications, Inc. accelerometer.
TL;DR: These data provide a template on which patterns of activity can be classified into intensity levels using the CSA accelerometer, and help to predict energy expenditure at any treadmill speed.
Journal ArticleDOI
Amount of Time Spent in Sedentary Behaviors in the United States, 2003–2004
Charles E. Matthews,Kong Y. Chen,Patty S. Freedson,Maciej S. Buchowski,Bettina M. Beech,Russell R. Pate,Richard P. Troiano +6 more
TL;DR: The authors evaluate participants from the 2003-2004 National Health and Nutrition Examination Survey aged >/=6 years who wore an activity monitor for up to 7 days to provide the first objective measure of the amount of time spent in sedentary behavior in the US population.
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Age and gender differences in objectively measured physical activity in youth.
Stewart G. Trost,Russell R. Pate,James F. Sallis,Patty S. Freedson,Wendell C. Taylor,Marsha Dowda,John R. Sirard +6 more
TL;DR: In this paper, the authors evaluated age and gender differences in objectively measured physical activity (PA) in a population-based sample of students in grades 1-12 and found that PA declines rapidly during childhood and adolescence.
Journal ArticleDOI
Calibration of accelerometer output for children.
TL;DR: The calibration of four different accelerometers used most frequently to assess physical activity and sedentary behavior in children are reviewed and alternative data processing using the raw acceleration signal is recommended as a possible alternative approach where the actual acceleration pattern is used to characterize activity behavior.
Journal ArticleDOI
Using objective physical activity measures with youth: how many days of monitoring are needed?
TL;DR: In this paper, the authors used the regression equation developed by Freedson et al. (1997) to estimate the average daily time spent in moderate-to-vigorous physical activity (MVPA) in children.