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The collision forces and lower-extremity inter-joint coordination during running.

Li-I Wang1, Chin-Yi Gu2, I-Lin Wang3

  • 1a Department of Physical Education and Kinesiology , National Dong Hwa University , Hualien , Taiwan.

Sports Biomechanics
|June 21, 2017
PubMed
Summary

High collision force runners exhibit less flexible lower extremity coordination during the braking phase. This reduced coordination in high impact runners may influence running injury risk.

Keywords:
Dynamical systemlandingloadingphase anglevariability

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Area of Science:

  • Biomechanics
  • Human Movement Science
  • Sports Medicine

Background:

  • Running involves complex inter-joint coordination in the lower extremities.
  • Impact forces during running can vary significantly between individuals.
  • Understanding coordination patterns is crucial for injury prevention.

Purpose of the Study:

  • To compare lower extremity inter-joint coordination during the running braking phase across different impact force groups.
  • To investigate the relationship between collision forces and coordination flexibility.

Main Methods:

  • Utilized a dynamical system approach to analyze inter-joint coordination parameters.
  • Collected kinematic data using infra-red cameras and kinetic data via force plates.
  • Categorized 20 rearfoot-strike runners into high (HF), medium (MF), and low (LF) collision force groups based on vertical ground reaction force peaks.

Main Results:

  • No significant differences in joint angles at landing or running velocity were observed between groups.
  • The high collision forces (HF) group demonstrated significantly smaller deviation phase (DP) in hip-knee coordination during braking compared to MF and LF groups.
  • A negative correlation was found between the deviation phase (DP) of hip-knee coordination and collision force during the braking phase.

Conclusions:

  • High collision force runners exhibit reduced flexibility in their lower extremity inter-joint coordination during the running braking phase.
  • Disparities in coordination flexibility are evident in runners with higher impact forces.
  • Further research is needed to clarify the role of inter-joint coordination efforts and their association with running injury risk.