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Human pendulum approach to simulate and quantify locomotor impact loading

M A Lafortune1, M J Lake

  • 1School of Human Biology, University of Guelph, Ontario, Canada.

Journal of Biomechanics
|September 1, 1995
PubMed
Summary
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A novel human pendulum method simulates realistic lower extremity impacts during locomotion. This approach provides controlled, comfortable testing for injury prevention and footwear design research.

Area of Science:

  • Biomechanics
  • Kinetics
  • Human Locomotion

Background:

  • Understanding impact mechanics is crucial for injury prevention and footwear design.
  • Existing methods like instrumented missiles lack control or isolate tissue studies.
  • Locomotion impacts require specific magnitude and temporal characteristics not mimicked by current techniques.

Purpose of the Study:

  • To introduce and validate a human pendulum approach for controlled impact testing.
  • To assess the ability of this method to replicate in vivo locomotion impacts.
  • To provide a comfortable and effective tool for studying human impact loading.

Main Methods:

  • A human pendulum system was developed, using the subject's body as the missile.
  • Subjects lay supine on a suspended bed and were swung towards an instrumented force platform wall.

Related Experiment Videos

  • Axial reaction force and shank acceleration were measured during pendulum impacts, specifically for heel-toe running simulation.

    • Main Results:

    • The human pendulum method successfully reproduced axial reaction force and shank acceleration patterns characteristic of running.
    • Impact loading patterns from the pendulum tests closely resembled those of actual heel-toe running.
    • The procedure was performed without discomfort to the ten participating subjects.

    Conclusions:

    • The human pendulum approach offers a controlled and reproducible method for studying human impact loading.
    • This technique effectively mimics the magnitude and temporal characteristics of locomotion impacts.
    • It presents a valuable tool for advancing research in injury prevention and footwear design.