title: Authors' Reply to: Critique of "Physical Activity Assessment Between Consumer- and Research-Grade Accelerometers: A Comparative Study in Free-Living Conditions" - Does Location of the Device Matter?
authors.affiliation: University of Delaware, Department of Behavioral Health and Nutrition, University of Delaware, Newark, DE, United States.
authors.forename: Gregory M
authors.identifier: http://orcid.org/0000-0001-6256-503X
authors.initials: GM
authors.lastname: Dominick
authors.affiliation: Northern Arizona University, Informatics and Computing Program, Northern Arizona University, Flagstaff, AZ, United States.
authors.forename: Kyle N
authors.identifier: http://orcid.org/0000-0002-3552-4803
authors.initials: KN
authors.lastname: Winfree
authors.affiliation: University of Delaware, Biostatistics Core Facility, University of Delaware, Newark, DE, United States.
authors.forename: Ryan T
authors.identifier: http://orcid.org/0000-0002-8385-8218
authors.initials: RT
authors.lastname: Pohlig
authors.affiliation: University of Delaware, Department of Behavioral Health and Nutrition, University of Delaware, Newark, DE, United States.
authors.forename: Mia A
authors.identifier: http://orcid.org/0000-0001-8636-411X
authors.initials: MA
authors.lastname: Papas
keywords: Fitbit; actigraphy; activity tracker; aerobic exercise; physical activity; validity