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A segment interaction analysis of proximal-to-distal sequential segment motion patterns.

C A Putnam1

  • 1School of Physical Education, Dalhousie University, Halifax, Nova Scotia, Canada.

Medicine and Science in Sports and Exercise
|January 1, 1991
PubMed
Summary
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The thigh and leg interaction significantly influences lower extremity movement patterns during kicking and running. This biomechanical study supports segment speed summation but not force summation principles.

Area of Science:

  • Biomechanics
  • Human Movement Science
  • Kinesiology

Background:

  • Understanding lower extremity movement patterns is crucial for analyzing athletic performance and injury prevention.
  • Sequential, proximal-to-distal motion is a common observation in activities like kicking, running, and walking.
  • Existing biomechanical principles attempt to explain these observed motion patterns.

Purpose of the Study:

  • To investigate the motion-dependent interactions between adjacent lower extremity segments.
  • To explain the proximal-to-distal sequential motion pattern during kicking, running, and walking.
  • To evaluate the validity of general biomechanical principles in explaining these movements.

Main Methods:

  • Collected high-speed film data from four subjects performing kicking, running, and walking.

Related Experiment Videos

  • Derived equations to quantify segment interactions using joint moments (hip and knee) and kinematic variables.
  • Analyzed angular motion-dependent interactions between the thigh and leg segments.

    • Main Results:

    • The angular motion-dependent interaction between the thigh and leg significantly determined segment motion patterns across all activities.
    • This interaction remained consistent except when significant knee angle differences occurred.
    • Evidence supported the principle of summation of segment speeds.
    • No support was found for the principle of summation of force or specific acceleration effects.

    Conclusions:

    • The interaction between the thigh and leg is a key factor in lower extremity kinematics during dynamic movements.
    • The principle of summation of segment speeds is supported in these activities.
    • Further research is needed to refine biomechanical models for human locomotion and movement.