Comparison of Physical Activity Measures Derived From the Fitbit Flex and the ActiGraph GT3X+ in an Employee Population With Chronic Knee Symptoms.

Pamela SemanikJungwha LeeChristine A PellegriniJing SongDorothy D DunlopRowland W Chang

Published in: ACR open rheumatology (2019)

The Fitbit Flex does not appear to be an adequate substitute for research-grade accelerometry (which represents the gold standard for objective research monitoring of all physical activity intensity levels) in this population of persons with chronic knee symptoms.

Keyphrases

physical activity
total knee arthroplasty
sleep quality
knee osteoarthritis
anterior cruciate ligament
high intensity
drug induced
silver nanoparticles
clinical evaluation