Towards wearable comprehensive capture and analysis of skeletal muscle activity during human locomotion

Christina Zong Hao Ma, Yan To Ling, Queenie Tsung Kwan Shea, Li Ke Wang, Xiao Yun Wang, Yong Ping Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


Background: Motion capture and analyzing systems are essential for understanding locomotion. However, the existing devices are too cumbersome and can be used indoors only. A newly-developed wearable motion capture and measurement system with multiple sensors and ultrasound imaging was introduced in this study. Methods: In ten healthy participants, the changes in muscle area and activity of gastrocnemius, plantarflexion and dorsiflexion of right leg during walking were evaluated by the developed system and the Vicon system. The existence of significant changes in a gait cycle, comparison of the ankle kinetic data captured by the developed system and the Vicon system, and test-retest reliability (evaluated by the intraclass correlation coefficient, ICC) in each channel’s data captured by the developed system were examined. Results: Moderate to good test-retest reliability of various channels of the developed system (0.512 ≤ ICC ≤ 0.988, p < 0.05), significantly high correlation between the developed system and Vicon system in ankle joint angles (0.638R ≤ 0.707, p < 0.05), and significant changes in muscle activity of gastrocnemius during a gait cycle (p < 0.05) were found. Conclusion: A newly developed wearable motion capture and measurement system with ultrasound imaging that can accurately capture the motion of one leg was evaluated in this study, which paves the way towards real-time comprehensive evaluation of muscles and joint motions during different activities in both indoor and outdoor environments.

Original languageEnglish
Article number195
JournalSensors (Switzerland)
Issue number1
Publication statusPublished - 1 Jan 2019


  • Electromyography (EMG)
  • Joint angle
  • Mechanomyography (MMG)
  • Motion capture and analysis
  • Plantar force
  • Sonomyograph (SMG)
  • Ultrasound imaging
  • Wearable

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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