A feasibility study of wearable activity monitors for pre-adolescent school-age children.
BACKGROUND
Understanding physical activity is key in the fight against childhood obesity. The objective of this study was to examine the feasibility of using certain wearable devices to measure physical activity among children.


METHODS
A qualitative study was conducted with 25 children aged 7 to 10 years to assess acceptability and compliance of wearable activity devices in this age group. During March through August 2012, children participated in a 4-week study of 3 accelerometer models and a heart rate monitor. Children were asked to use a different device each week for 7 consecutive days. Children and their parents completed structured interviews after using each device; they also completed a final exit interview.


RESULTS
The wrist-worn Polar Active was the device most preferred by children and was associated with the highest level of compliance. Devices that are comfortable to wear, fit properly, have engaging features, and are waterproof increase feasibility and are associated with higher levels of compliance.


CONCLUSIONS
The wrist-worn device was the most feasible for measuring physical activity among children aged 7 to 10 years. These findings will inform researchers in selecting tools for measuring children's physical activity.
Foods for Health Institute, University of California, Davis, 2141 RMI North, One Shields Ave, Davis CA 95616. E-mail: seschaefer@ucdavis.edu.
Sara E
SE
Schaefer
Western Human Nutrition Research Center, University of California, Davis.
Marta
M
Van Loan
Foods for Health Institute, University of California, Davis, Davis, California.
J Bruce
JB
German
D061725:Accelerometry / Q000295:instrumentation* / Q000379:methods*; D002140:California; D002648:Child; D003365:Costs and Cost Analysis; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods; D009043:Motor Activity; D009765:Obesity / Q000517:prevention & control; D010342:Patient Acceptance of Health Care / Q000523:psychology* / Q000706:statistics & numerical data; D010349:Patient Compliance / Q000523:psychology* / Q000706:statistics & numerical data; D036301:Qualitative Research; D011795:Surveys and Questionnaires; D013997:Time Factors