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Conceição, F., King, M.A., Yeadon, M.R., Lewis, M.G.C. 
ORCID: 0000-0001-5918-3444 and Forrester, S.E.,
2012.
An isovelocity dynamometer method to determine monoarticular and biarticular muscle parameters.
Journal of Applied Biomechanics, 28 (6), pp. 751-759.
ISSN 1065-8483
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212996_8382 Lewis Publisher PID212996.pdf Download (6MB) | Preview |
Abstract
This study aimed to determine whether subject-specific individual muscle models for the ankle plantar flexors could be obtained from single joint isometric and isovelocity maximum torque measurements in combination with a model of plantar flexion. Maximum plantar flexion torque measurements were taken on one subject at six knee angles spanning full flexion to full extension. A planar three-segment (foot, shank and thigh), two muscle (soleus and gastrocnemius) model of plantar flexion was developed. Seven parameters per muscle were determined by minimizing a weighted root mean square difference (wRMSD) between the model output and the experimental torque data. Valid individual muscle models were obtained using experimental data from only two knee angles giving a wRMSD score of 16 N m, with values ranging from 11 to 17 N m for each of the six knee angles. The robustness of the methodology was confirmed through repeating the optimization with perturbed experimental torques (±20%) and segment lengths (±10%) resulting in wRMSD scores of between 13 and 20 N m. Hence, good representations of maximum torque can be achieved from subject-specific individual muscle models determined from single joint maximum torque measurements. The proposed methodology could be applied to muscle-driven models of human movement with the potential to improve their validity.
| Item Type: | Journal article |
|---|---|
| Publication Title: | Journal of Applied Biomechanics |
| Creators: | Conceição, F., King, M.A., Yeadon, M.R., Lewis, M.G.C. and Forrester, S.E. |
| Publisher: | Human Kinetics Inc. |
| Date: | 2012 |
| Volume: | 28 |
| Number: | 6 |
| ISSN: | 1065-8483 |
| Divisions: | Schools > School of Science and Technology |
| Record created by: | EPrints Services |
| Date Added: | 09 Oct 2015 10:10 |
| Last Modified: | 25 Feb 2019 15:59 |
| URI: | https://irep.ntu.ac.uk/id/eprint/8791 |
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