Fatigue-induced continuous changes in muscle pennation angle during isometric contraction

Jun Shi, Jing Yi Guo, Yong Jin Zhou, Yongping Zheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Muscle fatigue is an exercise-induced reduction in the maximal capacity of muscle to produce force or power output. The continuous changes of brachialis pennation angles during the fatiguing isometric contraction was investigated in this study. The muscle torque, surface electromyography (SEMG) and ultrasound image of brachialis were continuously recorded during the process of isometric contraction. The mean brachialis pennation angles of four subjects increased from 19.75 ± 2.57° of pre-fatigue to 23.10 ± 2.85° of post-fatigue. The results demonstrated that the muscle fatigue would result in the dramatic increase of pennation angle during the submaximal sustained isometric contraction.
Original languageEnglish
Title of host publication2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
DOIs
Publication statusPublished - 6 Sep 2010
Event4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 - Chengdu, China
Duration: 18 Jun 201020 Jun 2010

Conference

Conference4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
CountryChina
CityChengdu
Period18/06/1020/06/10

Keywords

  • Isometric contraction
  • Muscle fatigue
  • Pennation angle
  • Ultrasound

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics

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