Effects of segment masses and cut-off frequencies on the estimation of vertical ground reaction forces in running
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Published version
Date
2020-01-23
Authors
Komaris, Dimitrios-Sokratis
Pérez-Valero, Eduardo
Jordan, Luke
Barton, John
Hennessy, Liam
O'Flynn, Brendan
Tedesco, Salvatore
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Published Version
Abstract
The purpose of this study is to examine the effect of the body’s mass distribution to segments and the filtering of kinematic data on the estimation of vertical ground reaction forces from positional data. A public dataset of raw running biomechanics was used for the purposes of the analysis, containing recordings of twenty-eight competitive or elite athletes running on an instrumented treadmill at three different speeds. A grid-search on half of the trials was employed to seek the values of the parameters that optimise the approximation of biomechanical loads. Two-way ANOVAs were then conducted to examine the significance of the parameterised factors in the modelled waveforms. The reserved recordings were used to validate the predictive accuracy of the model. The cut-off filtering frequencies of the pelvis and thigh markers were correlated to running speed and heel-strike patterns, respectively. Optimal segment masses were in agreement with standardised literature reported values. Root mean square errors for slow running (2.5 ) were on average equal to 0.1 (body weight normalized). Errors increased with running speeds to 0.13 and 0.18 for 3.5 and 4.5 , respectively. This study accurately estimated vertical ground reaction forces for slow-paced running by only considering the kinematics of the pelvis and thighs. Future studies should consider configuring the filtering of kinematic inputs based on the location of markers and type of running.
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Keywords
Impact forces , Running performance , Wearable sensors , Accelerometry , Kinetics , Biomechanical modelling
Citation
Komaris, D.-S., Perez-Valero, E., Jordan, L., Barton, J., Hennessy, L., O'Flynn, B. and Tedesco, S. (2020) 'Effects of segment masses and cut-off frequencies on the estimation of vertical ground reaction forces in running', Journal of Biomechanics, 99, 109552 (7 pp). doi: 10.1016/j.jbiomech.2019.109552