@misc{10481/62401,
year = {2019},
month = {9},
url = {http://hdl.handle.net/10481/62401},
abstract = {This study aimed to evaluate the concurrent validity of two different inertial measurement
units for measuring spatiotemporal parameters during running on a treadmill, by comparing
data with a high-speed video analysis (VA) at 1,000 Hz. Forty-nine endurance runners performed a running protocol on a treadmill at comfortable velocity (i.e., 3.25 ± 0.36 m.s-1).
Those wearable devices (i.e., Stryd™ and RunScribe™ systems) were compared to a highspeed VA, as a reference system for measuring spatiotemporal parameters (i.e. contact
time [CT], flight time [FT], step frequency [SF] and step length [SL]) during running at comfortable velocity. The pairwise comparison revealed that the Stryd™ system underestimated
CT (5.2%, p < 0.001) and overestimated FT (15.1%, p < 0.001) compared to the VA;
whereas the RunScribe™ system underestimated CT (2.3%, p = 0.009). No significant differences were observed in SF and SL between the wearable devices and VA. The intra
class correlation coefficient (ICC) revealed an almost perfect association between both systems and high-speed VA (ICC > 0.81). The Bland-Altman plots revealed heteroscedasticity
of error (r
2 = 0.166) for the CT from the Stryd™ system, whereas no heteroscedasticity of
error (r
2 < 0.1) was revealed in the rest of parameters. In conclusion, the results obtained
suggest that both foot pods are valid tools for measuring spatiotemporal parameters during
running on a treadmill at comfortable velocity. If the limits of agreement of both systems are
considered in respect to high-speed VA, the RunScribe™ seems to be a more accurate system for measuring temporal parameters and SL than the Stryd™ system.},
organization = {This study was funded by the University
of La Frontera (Universidad de La Frontera,
Temuco, Chile, Project DI19-0023). This grant was
awarded to FGP. The funder had no role in study
design, data collection and analysis, decision to
publish, or preparation of the manuscript.},
publisher = {Daniel Boullosa, University of Brasilia, BRAZIL},
title = {Agreement between the spatiotemporal gait parameters from two different wearable devices and high-speed video analysis},
doi = {https://doi.org/10.1371/journal. pone.0222872},
author = {García-Pinillos, Felipe and Pantoja Vallejo, Antonio},
}