Activity trackers are not valid for step count registration when walking with crutches

Gait & Posture
Roel De Ridder, Cedric De Blaiser

Abstract

The use of activity trackers has been proposed in rehabilitation where resuming physical activity is deemed crucial, e.g. after total knee arthroplasty (TKA). As patients initially often walk with crutches, it is of importance that clinicians can rely on the information provided by activity trackers. To determine concurrent validity of 2 activity trackers for step count, positioned on different locations on the body during gait with crutches. Thirty healthy participants performed normal gait and gait with one crutch and two crutches over a distance of 400 m while wearing a Garmin Vivofit 3 and Nokia Go on both wrists and both sides at the waist (only Nokia Go). The gold standard was manual step count. Inter-device reliability (within brand) was assessed by calculating Intraclass Correlation Coëfficients (ICC) and concurrent validity was determined by performing paired sample t-tests, ICC and Bland-Altman Plots with % bias and 95% CI Limits of Agreement (LoA). During normal gait, both the Nokia and Garmin showed good to excellent inter-device reliability (ICC > 0.75). Both devices showed concurrent validity compared to manual step count, with slightly better results for the Garmin compared to the Nokia at the wrist (% bias = res...Continue Reading

Citations

May 7, 2020·International Journal of Environmental Research and Public Health·Francesco NegriniFranco Molteni
Dec 26, 2019·Brazilian Journal of Physical Therapy·Julien LebleuChristine Detrembleur

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