Lewis, MGC ORCID: https://orcid.org/0000-0001-5918-3444, King, MA, Yeadon, MR and Conceição, F, 2012. Are joint torque models limited by an assumption of monoarticularity? Journal of Applied Biomechanics, 28 (5), pp. 520-529. ISSN 1065-8483
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Abstract
This study determines whether maximal voluntary ankle plantar flexor torque could be more accurately represented using a torque generator that is a function of both knee and ankle kinematics. Iso velocity and isometric ankle plantar flexor torques were measured on a single participant for knee joint angles of 111° to 169° (approximately full extension) using a Contrex M J dynamometer. Maximal voluntary torque was represented by a 19-parameter two-joint function of ankle and knee joint angles and angular velocities with the parameters determined by minimizing a weighted root mean square difference between measured torques and the two-joint function. The weighted root mean square difference between the two-joint function and the measured torques was 10 N-m or 3% of maximum torque. The two-joint function was a more accurate representation of maximal voluntary ankle plantar flexor torques than an existing single-joint function where differences of 19% of maximum torque were found. It is concluded that when the knee is flexed by more than 40°, a two-joint representation is necessary.
Item Type: | Journal article |
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Publication Title: | Journal of Applied Biomechanics |
Creators: | Lewis, M.G.C., King, M.A., Yeadon, M.R. and Conceição, F. |
Publisher: | Human Kinetics Inc. |
Date: | 2012 |
Volume: | 28 |
Number: | 5 |
ISSN: | 1065-8483 |
Divisions: | Schools > School of Science and Technology |
Record created by: | EPrints Services |
Date Added: | 09 Oct 2015 10:35 |
Last Modified: | 25 Feb 2019 15:58 |
URI: | https://irep.ntu.ac.uk/id/eprint/15246 |
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