A Novel and Safe Approach to Simulate Cutting Movements Using Ground Reaction Forces

Authors

Amelia Lanier, University of Nebraska at OmahaFollow
Brian Knarr, University of Nebraska at OmahaFollow
Nicholas Stergiou, University of Nebraska at OmahaFollow
Thomas S. Buchanan, University of Delaware

Author ORCID Identifier

Stergiou - https://orcid.org/0000-0002-9737-9939

Document Type

Article

Publication Date

8-11-2018

Abstract

Control of shear ground reaction forces (sGRF) is important in performing running and cutting tasks as poor sGRF control has implications for those with knee injuries, such as anterior cruciate ligament (ACL) ruptures. The goal of this study was to develop a novel and safe task to evaluate control or accurate modulation of shear ground reaction forces related to those generated during cutting. Our approach utilized a force control task using real-time visual feedback of a subject’s force production and evaluated control capabilities through accuracy and divergence measurements. Ten healthy recreational athletes completed the force control task while force control via accuracy measures and divergence calculations was investigated. Participants were able to accurately control sGRF in multiple directions based on error measurements. Forces generated during the task were equal to or greater than those measured during a number of functional activities. We found no significant difference in the divergence of the force profiles using the Lyapunov Exponent of the sGRF trajectories. Participants using our approach produced high accuracy and low divergence force profiles and functional force magnitudes. Moving forward, we will utilize this task in at-risk populations who are unable to complete a cutting maneuver in early stages of rehabilitation, such as ACL deficient and newly reconstructed individuals, allowing insight into force control not obtainable otherwise.

Comments

Copyright held by authors.

This is an article published in Sensors volume 18 issue 8 on August 11, 2018, and can be accessed at https://doi.org/10.3390/s18082631

This is licensed with the Creative Commons CC BY

Journal Title

Sensors

Volume

18

Issue

8

First Page

2631

Recommended Citation

Lanier, A.S., Knarr, B.A., Stergiou, N., & Buchanan, T.S. (August 11, 2018), A novel and safe approach to simulate cutting movements using ground reaction forces. Sensors, 18(8), 2631. https://doi.org/10.3390/s18082631

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 License.