The Validity of Consumer-Level Activity Monitors in Healthy Older Adults in Free-Living Conditions

Farina, Nicolas and Lowry, Ruth G. (2018) The Validity of Consumer-Level Activity Monitors in Healthy Older Adults in Free-Living Conditions. Journal of Aging and Physical Activity, 26 (1). pp. 128-135. ISSN 1063-8652

Text (Accepted author manuscript version reprinted, by permission, from Journal of Aging and Physical Activity, 2017, © Human Kinetics, Inc.)
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Consumer-level activity monitors, such as Fitbit and Misfit devices, are a popular and low-cost means of measuring physical activity. This study aims to compare the accuracy of step counts from two consumer-level activity monitors against two reference devices in healthy, community dwelling older adults in free-living conditions. Twenty-five older adults (aged 65-84) simultaneously wore 5 devices (e.g. Misfit Shine and Fitbit Charge HR) over 7 consecutive days. All consumer-level activity monitors positively correlated with reference devices (p<0.001). There was also substantial to near perfect agreement between all consumer-level activity monitors and reference devices. Compared to the Actigraph GT3X+, the waist worn Misfit Shine displayed the highest agreement amongst the devices worn (ICC=0.96, 95% 0.91 to 0.99). The wrist worn devices showed poorer agreement to reference devices. Future research needs to consider that not all consumer-level activity monitors are equal in terms of accuracy, design and function.

Item Type: Article
Uncontrolled Keywords: Fitbit; Misfit; accelerometer; accuracy; older adults; physical activity; tracker
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Q Science > QP Physiology
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
T Technology > T Technology (General)
Divisions: Departments > Sport and Exercise Sciences
Depositing User: Ruth Lowry
Date Deposited: 21 Jun 2017 14:13
Last Modified: 14 May 2018 12:37

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