Skip to main content
Journal cover image

Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb.

Publication ,  Journal Article
Lemay, MA; Bhowmik-Stoker, M; McConnell, GC; Grill, WM
Published in: Journal of biomechanics
January 2007

We used a musculoskeletal model of the cat hindlimb to compare the patterns of endpoint forces generated by all possible combination of 12 hindlimb muscles under three different muscle activation rules: homogeneous activation of muscles based on uniform activation levels, homogeneous activation of muscles based on uniform (normalized) force production, and activation based on the topography of spinal motoneuron pools. Force patterns were compared with the patterns obtained experimentally by microstimulation of the lumbar spinal cord in spinal intact cats. Magnitude and orientation of the force patterns were compared, as well as the proportion of the types found, and the proportions of patterns exhibiting points of zero force (equilibrium points). The force patterns obtained with the homogenous activation and motoneuron topography models were quite similar to those measured experimentally, with the differences being larger for the patterns from the normalized endpoint forces model. Differences in the proportions of types of force patterns between the three models and the experimental results were significant for each model. Both homogeneous activation and normalized endpoint force models produced similar proportions of equilibrium points as found experimentally. The results suggest that muscle biomechanics play an important role in limiting the number of endpoint force pattern types, and that muscle combinations activated at similar levels reproduced best the experimental results obtained with intraspinal microstimulation.

Duke Scholars

Published In

Journal of biomechanics

DOI

EISSN

1873-2380

ISSN

0021-9290

Publication Date

January 2007

Volume

40

Issue

16

Start / End Page

3679 / 3687

Related Subject Headings

  • Stress, Mechanical
  • Postural Balance
  • Muscle, Skeletal
  • Muscle Contraction
  • Movement
  • Models, Biological
  • Hindlimb
  • Computer Simulation
  • Cats
  • Biomedical Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lemay, M. A., Bhowmik-Stoker, M., McConnell, G. C., & Grill, W. M. (2007). Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb. Journal of Biomechanics, 40(16), 3679–3687. https://doi.org/10.1016/j.jbiomech.2007.06.021
Lemay, Michel A., Manoshi Bhowmik-Stoker, George C. McConnell, and Warren M. Grill. “Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb.Journal of Biomechanics 40, no. 16 (January 2007): 3679–87. https://doi.org/10.1016/j.jbiomech.2007.06.021.
Lemay MA, Bhowmik-Stoker M, McConnell GC, Grill WM. Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb. Journal of biomechanics. 2007 Jan;40(16):3679–87.
Lemay, Michel A., et al. “Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb.Journal of Biomechanics, vol. 40, no. 16, Jan. 2007, pp. 3679–87. Epmc, doi:10.1016/j.jbiomech.2007.06.021.
Lemay MA, Bhowmik-Stoker M, McConnell GC, Grill WM. Role of biomechanics and muscle activation strategy in the production of endpoint force patterns in the cat hindlimb. Journal of biomechanics. 2007 Jan;40(16):3679–3687.
Journal cover image

Published In

Journal of biomechanics

DOI

EISSN

1873-2380

ISSN

0021-9290

Publication Date

January 2007

Volume

40

Issue

16

Start / End Page

3679 / 3687

Related Subject Headings

  • Stress, Mechanical
  • Postural Balance
  • Muscle, Skeletal
  • Muscle Contraction
  • Movement
  • Models, Biological
  • Hindlimb
  • Computer Simulation
  • Cats
  • Biomedical Engineering