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Effect of Cadence Regulation on Muscle Activation Patterns During Robot-Assisted Gait: A Dynamic Simulation Study

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Abstract—Cadence or stride frequency is an important parameter being controlled in gait training of neurologically impaired subjects. The aim of this study was to examine the effects of cadencevariationonmuscleactivationpatternsduringrobot-assisted unimpaired gait using dynamic simulations. A 2-D musculoskeletal model of human gait was developed considering eight major muscle groups along with an existing ground contact force model. A2-Dmodelofaroboticorthosiswasalsodevelopedthatprovides actuation to the hip, knee, and ankle joints in the sagittal plane to guide subject’s limbs on reference trajectories. A custom inverse dynamicsalgorithmwasusedalongwithaquadraticminimization algorithm to obtain a feasible set of muscle activation patterns. Predicted patterns of muscle activations during slow, natural, and fastcadencewerecomparedandthemeanmuscleactivationswere found to be increasing with an increase in cadence. The proposed dynamicsimulationprovidesimportantinsightintothemuscleactivation variations with change in cadence during robot-assisted gait and provides the basis for investigating the influence of cadence regulation on neuromuscular parameters of interest during robot-assisted gait.

IndexTerms—Cadence,dynamicsimulation,gaittraining,muscle activation patterns, robotic orthosis.

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Informasi Detail

Judul Seri

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No. Panggil

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Penerbit

: IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS., 2013

Deskripsi Fisik

IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, VOL. 17, NO. 2, MARCH 2013 p. 442-451

Bahasa

English

ISBN/ISSN

2168-2194

Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

ROBOT--KESEHATAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Shahid Hussain, Sheng Q. Xie and Prashant K. Jamwal

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