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Chungyi Chiu, Alicia R. Covello-Jones, Esteban Montenegro, Jessica M. Brooks, and Sa Shen

counters and accelerometers may start to bridge this gap with helping adults recognize their current PA levels. While the popular 10,000 steps per day goal has been used in the literature, to our knowledge, there are no studies establishing cut points for number of steps per day or movement counts on in

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Greg Petrucci Jr., Patty Freedson, Brittany Masteller, Melanna Cox, John Staudenmayer, and John Sirard

and not relying on participants to put the device back on after swimming or bathing. Fossil’s activity trackers have been well received by the public as the MS was recently listed as a top-rated activity tracker ( Stables, 2018 ). A recent laboratory study showed estimates of steps/minute from a hip

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Sophie E. Claudel, Kosuke Tamura, James Troendle, Marcus R. Andrews, Joniqua N. Ceasar, Valerie M. Mitchell, Nithya Vijayakumar, and Tiffany M. Powell-Wiley

syncing of the Fitbit during the deployment session. Each participants’ Fitbit account was linked to a project analytics system using Fitabase (Small Steps Labs, LLC, San Diego, CA; available at Therefore, activity could be monitored remotely by the study team. The Fitbit recorded the

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Kathryn J. DeShaw, Laura Ellingson, Yang Bai, Jeni Lansing, Maria Perez, and Greg Welk

and other studies have documented greater error for assessing steps, a commonly used metric for consumer monitors ( Lee & Laurson, 2015 ). More recently, advances in monitor processing have led to the development of machine learning methods to improve the accuracy of estimates from standard research

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Hannah G. Calvert, Matthew T. Mahar, Brian Flay, and Lindsey Turner

benefits, it is recommended that children aged 6–17 years accrue at least 60 minutes of moderate to vigorous PA (MVPA) per day. 9 Several studies have provided evidence that elementary-school-aged children need at least 12,000 steps daily to reach this target. 10 – 12 As a large portion of children

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Rodrigo Torres-Castro, Luis Vasconcello-Castillo, Roberto Acosta-Dighero, Nicolás Sepúlveda-Cáceres, Marisol Barros-Poblete, Homero Puppo, Roberto Vera-Uribe, Jordi Vilaró, and Mario Herrera-Romero

. Through algorithms, they provide information about the amount of time used at the different levels of PA intensity, as well as the number of steps undertaken; they are also used to estimate energy expenditure. 9 Over the last several years, children and adolescents have become more sedentary due to the

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Lisa Jasper, Lauren A. Beaupre, John C. Spence, and C. Allyson Jones

; Feehan et al., 2018 ; Losina et al., 2018 ; Twiggs et al., 2017 ), but their validity in this population has not previously been evaluated. Although several studies of healthy adults suggested acceptable validity in the use of Fitbits, a recent systematic review suggests Fitbits overestimate steps in

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Alan K. Bourke, Espen A. F. Ihlen, and Jorunn L. Helbostad

) examined the validity to accurately detect steps at different walking speeds on a treadmill, in a population of 20 healthy adults. They demonstrated that at faster walking speeds (above 0.5 m/s and a cadence ≥69 steps/min) steps were successfully detected; however, below these limits step detection rapidly

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Susan Park, Lindsay P. Toth, Paul R. Hibbing, Cary M. Springer, Andrew S. Kaplan, Mckenzie D. Feyerabend, Scott E. Crouter, and David R. Bassett

Wearable activity monitors play an important role in clarifying the relationships between physical activity (PA) and health ( Wijndaele et al., 2015 ; Wright, Hall Brown, Collier, & Sandberg, 2017 ). A common output of wearable activity monitors is steps, which is an intuitive metric for measuring

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Elroy J. Aguiar, John M. Schuna Jr., Tiago V. Barreira, Emily F. Mire, Stephanie T. Broyles, Peter T. Katzmarzyk, William D. Johnson, and Catrine Tudor-Locke

There is a growing interest in measuring ambulatory physical activity, reported as steps per day, with the recent 2018 Physical Activity Guidelines Advisory Committee Scientific Report ( 2018 Physical Activity Guidelines Advisory Committee, 2018 ) noting the advantages of step-based physical