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A Framework to Evaluate Devices That Assess Physical Behavior

Keadle, Sarah Kozey1; Lyden, Kate A.2,3; Strath, Scott J.4; Staudenmayer, John W.5; Freedson, Patty S.2

Exercise and Sport Sciences Reviews: October 2019 - Volume 47 - Issue 4 - p 206–214
doi: 10.1249/JES.0000000000000206
Perspectives for Progress
Visual Abstract

Body-worn devices that estimate physical behavior have tremendous potential to address key research gaps. However, there is no consensus on how devices and processing methods should be developed and evaluated, resulting in large differences in summary estimates and confusion for end users. We propose a phase-based framework for developing and evaluating devices that emphasizes robust validation studies in naturalistic conditions.

A framework to develop and evaluate devices used to assess physical behavior will enable the field to move forward more cohesively and coherently.

1Department of Kinesiology and Public Health, California Polytechnic State University, San Luis Obispo, CA

2Department of Kinesiology, University of Massachusetts, Amherst, MA

3KAL Research and Consulting, Denver, CO

4Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI

5Department of Math and Statistics, University of Massachusetts, Amherst, MA

Address for correspondence: Patty S. Freedson, Ph.D., Professor Emerita, Department of Kinesiology, University of Massachusetts, Amherst, 10570 Carena Circle, Fort Myers, FL 33913 (E-mail:

Accepted for publication: June 13, 2019.

Associated Editor: Barry Braun, Ph.D., FACSM.

Online date: July 9, 2019

© 2019 American College of Sports Medicine