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Mathieu Gueugnon1, Robin N Salesse1, Alexandre Coste1

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Summary
This summary is machine-generated.

Human interaction involves synchronized movements and postural adjustments for balance. This study found that while movement complexity reduced stability, interpersonal coordination improved it in the medio-lateral direction, suggesting distinct roles for postural control.

Keywords:
interpersonal coordinationintrapersonal coordinationjoint actionmirror gameposturesocial interaction

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Area of Science:

  • Neuroscience
  • Biomechanics
  • Human Movement Science

Background:

  • Human social interaction frequently involves spontaneous, coordinated movements.
  • Maintaining balance and supporting these movements requires complex postural adjustments.
  • Understanding the rules governing synchronization and posture in social contexts is crucial.

Purpose of the Study:

  • To investigate the impact of movement characteristics and interpersonal coordination on human posture.
  • To analyze ankle-hip coordination patterns during solo and dyadic movements.
  • To differentiate the functional roles of postural coordination in medio-lateral and antero-posterior directions.

Main Methods:

  • Assessed the effect of movement amplitude and complexity on posture during solo arm movements.
  • Utilized the mirror game to examine posture during improvised and synchronized dyadic movements.
  • Measured ankle-hip coordination in medio-lateral (ML) and antero-posterior (AP) directions.

Main Results:

  • Spontaneous emergence of in-phase ankle-hip patterns in ML and antiphase patterns in AP directions was observed.
  • Movement complexity negatively impacted postural stability in both ML and AP directions.
  • Interpersonal coordination enhanced ML postural stability but not AP stability.

Conclusions:

  • In-phase ML coordination supports dynamic stability, while antiphase AP coordination aids mechanical stability.
  • Movement complexity poses a challenge to postural control.
  • Interpersonal coordination plays a role in enhancing dynamic stability during social interactions.