Effect of cadence regulation on muscle activation patterns during robot-assisted gait: A dynamic simulation study

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

Research output: Contribution to journalArticle

16 Citations (Scopus)

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 cadence variation on muscle activation patterns during robot-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. A 2-D model of a robotic orthosis was also developed that provides actuation to the hip, knee, and ankle joints in the sagittal plane to guide subject's limbs on reference trajectories. A custom inverse dynamics algorithm was used along with a quadratic minimization algorithm to obtain a feasible set of muscle activation patterns. Predicted patterns of muscle activations during slow, natural, and fast cadence were compared and the mean muscle activations were found to be increasing with an increase in cadence. The proposed dynamic simulation provides important insight into the muscle activation 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.

Original languageEnglish
Pages (from-to)442-451
Number of pages10
JournalIEEE Journal of Biomedical and Health Informatics
Volume17
Issue number2
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Gait
Muscle
Chemical activation
Robots
Muscles
Computer simulation
Orthotic Devices
Ankle Joint
Hip Joint
Robotics
Knee Joint
Extremities
Trajectories

Keywords

  • Cadence
  • Dynamic simulation
  • Gait training
  • Muscle activation patterns
  • Robotic orthosis

ASJC Scopus subject areas

  • Biotechnology
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Health Information Management
  • Medicine(all)

Cite this

Effect of cadence regulation on muscle activation patterns during robot-assisted gait : A dynamic simulation study. / Hussain, Shahid; Xie, Sheng Q.; Jamwal, Prashant K.

In: IEEE Journal of Biomedical and Health Informatics, Vol. 17, No. 2, 2013, p. 442-451.

Research output: Contribution to journalArticle

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