Optimization of muscle parameters to predict ankle joint moments

J. Son*, S. J. Hwang, J. S. Lee, S. Y. Kim, K. R. Chung, Y. H. Kim

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, an EMG-driven model was developed, and isometric and isokinetic contraction movements were evaluated to validate the developed model. One healthy male participated in this study. The dynamometer tasks were performed for maximum voluntary isometric contractions (MVIC) for ankle dorsiflexor and plantarflexor, isokinetic contraction at both 30°/s and 60°/s. EMGs were recorded from the tibialis anterior, gastrocnemius medialis, gastrocnemius lateralis and soleus muscles at the sampling rate of 1000 Hz. The MVIC trial was used to customize the EMG-driven model to the specific subject. Once the optimization was applied to adjust the muscle parameters, the predicted joint moment was highly similar to the measured value with the relatively small RMS error less than 40% (r = 0.955 (21%) and r = 0.819 (36%) and in 30°/s and 60°/s dynamic movements, respectively). We expect that our EMG-driven model would be employed in our future efforts to estimate muscle forces of the elderly.

Original languageEnglish (US)
Title of host publication6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
Pages1459-1462
Number of pages4
DOIs
StatePublished - Oct 22 2010
Event6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech - Singapore, Singapore
Duration: Aug 1 2010Aug 6 2010

Publication series

NameIFMBE Proceedings
Volume31 IFMBE
ISSN (Print)1680-0737

Other

Other6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
CountrySingapore
CitySingapore
Period8/1/108/6/10

Keywords

  • Ankle
  • EMG-driven
  • Hill model
  • Joint moment
  • Muscle forces

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering

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