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Related Experiment Videos

Coordination between breathing and forearm movements during sinusoidal tracking.

D Ebert1, B Rassler, H Hefter

  • 1Carl-Ludwig-Institute of Physiology, University of Leipzig, Liebigstrasse 27, D-04103 Leipzig, Germany. ebed@medizin.uni-leipzig.de

European Journal of Applied Physiology
|February 9, 2000
PubMed
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Rhythmical limb movements can entrain breathing, with coordination patterns like 1:1, 1:2, and 1:3 observed. The rate of movement significantly influences this breathing-movement coordination, highlighting central nervous system coupling.

Area of Science:

  • Neuroscience
  • Human Physiology
  • Biophysics

Background:

  • Breathing and limb movements are fundamental physiological processes.
  • Coordination between respiration and locomotion is observed in various activities.
  • Understanding the central nervous system's control over coupled movements is crucial.

Purpose of the Study:

  • To investigate the entrainment of breathing by rhythmical forearm tracking movements.
  • To determine if breathing entrainment depends on the rate of limb movement.
  • To analyze the coordination patterns and their dependence on movement frequency.

Main Methods:

  • 11 healthy subjects performed sinusoidal forearm tracking movements.
  • Movement rates were systematically varied from 0.1 to 1.0 Hz.

Related Experiment Videos

  • Time relationships between breathing and limb movements were analyzed for coordination.

    • Main Results:

    • Coordination between breathing and tracking movements occurred at rate ratios of 1:1, 1:2, and 1:3.
    • A 1:1 entrainment band was observed between 0.2 and 0.6 Hz (max at 0.3 Hz).
    • 1:2 and 1:3 coordination bands were found between 0.5 and 1.0 Hz.
    • Breathing rate increased with tracking rate, with correlations dependent on entrainment band width.

    Conclusions:

    • Fixed time relationships between breathing and limb movements reflect strong central nervous system coupling.
    • The frequency of coordination is critically dependent on the movement rate.
    • Rhythmical limb movements can effectively entrain breathing within specific rate ranges.