Abstract
Footpod monitors are wearable devices attaching to the shoe with the ability to sense
oscillations in leg movement; however, few studies provide reliability. The purpose
was to provide reliability data for outdoor tasks as measured by the Stryd Power Meter,
which is a footpod monitor. Young healthy individuals (N=20, male n=12, female n=8)
completed two 5-min self-paced walks along a trail, and two 5-min trail runs. Reliability
of the tasks was determined using Coefficient of Variation (CV), Intraclass Correlation
(ICC), and 95% confidence intervals (CI). Measures during trail running that returned
a CV less than 10%, met the ICC threshold of 0.70, and displayed good to excellent
95% CI included pace, average elapsed power, average elapsed form power, average elapsed
leg spring, and vertical oscillation. The only variable during walking to meet these
criteria was maximal power (CV=4.02%, ICC=0.968, CI=0.902, 0.989). Running tasks completed
on a trail generally return more consistent measures for variables that can be obtained
from the Stryd footpod device than walking tasks.
Key words
wearable technology - footpod device - intraclass correlation - outdoor environment
