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Key parameters and sensitivity analysis of lower limb muscle strength in young men with different gait patterns

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  • Yifei Wang
  • Jianbo Sun
  • Xuesong Guo
  • Delong Dong
  • Chuankai Luan
  • Xiaolin Wang

Abstract

Objective: To explore the functional characteristics and principal component differences of electromyography in different phases of the gait cycle, to provide key parameters for identifying a complete gait, and to provide a reference for joint moment solving in the lower limb. Methods: Twenty young men were selected to measure the natural gait EMG of 14 muscles of the lower limb using VICON and NORAXON devices. Gait was classified into two categories according to the Niyogi S A classification, integral EMG differences were compared, and principal component analysis was performed on the differing muscles to calculate Cohen’s d values for significant differences and ΔIEMG values for non-significant differences. Results: (1) Significant differences existed in the integral EMG of the left semitendinosus, right semitendinosus, right biceps femoris, and left gastrocnemius muscles, both lateral and medial. (2) Principal component analysis showed significant differences in the left semitendinosus for principal component five (P

Suggested Citation

  • Yifei Wang & Jianbo Sun & Xuesong Guo & Delong Dong & Chuankai Luan & Xiaolin Wang, 2025. "Key parameters and sensitivity analysis of lower limb muscle strength in young men with different gait patterns," PLOS ONE, Public Library of Science, vol. 20(3), pages 1-20, March.
    • Handle: RePEc:plo:pone00:0318693
    DOI: 10.1371/journal.pone.0318693
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