Journal article

A comparison of optimisation methods and knee joint degrees of freedom on muscle force predictions during single-leg hop landings

H Mokhtarzadeh, L PERRATON, L Fok, M MUNOZ ACOSTA, R Clark, P Pivonka, AL Bryant

Journal of Biomechanics | Elsevier | Published : 2014

Abstract

The aim of this paper was to compare the effect of different optimisation methods and different knee joint degrees of freedom (DOF) on muscle force predictions during a single legged hop. Nineteen subjects performed single-legged hopping manoeuvres and subject-specific musculoskeletal models were developed to predict muscle forces during the movement. Muscle forces were predicted using static optimisation (SO) and computed muscle control (CMC) methods using either 1 or 3 DOF knee joint models. All sagittal and transverse plane joint angles calculated using inverse kinematics or CMC in a 1 DOF or 3 DOF knee were well-matched (RMS error<3°). Biarticular muscles (hamstrings, rectus femoris and ..

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