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Experimental Methods to Study Human Postural Control
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Effect of Concurrent Visual Feedback Frequency on Postural Control Learning in Adolescents.

Adrià Marco-Ahulló1,2, Alexis Sánchez-Tormo1, José A García-Pérez1

  • 1a Departamento de Didáctica de la Expresión Musical, Plástica y Corporal , Universidad de Valencia , Valencia , España.

Journal of Motor Behavior
|April 14, 2018
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Summary

This study suggests that 67% augmented visual feedback frequency is beneficial for adolescents learning balance tasks. This reduced feedback aids motor adaptation and retention, even if not always detected in immediate motor learning metrics.

Keywords:
augmented feedbackmotor adaptationmotor learningpostural sway

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Area of Science:

  • Motor Learning
  • Biomedical Engineering
  • Human Movement Science

Background:

  • Augmented visual feedback is crucial for motor skill acquisition.
  • Optimizing feedback frequency is key to effective motor learning, especially in adolescents.
  • Understanding the impact of different feedback schedules on balance tasks is essential for rehabilitation and training.

Purpose of the Study:

  • To determine the optimal augmented visual feedback frequency (100% or 67%) for learning a balance task in adolescents.
  • To compare the efficacy of continuous versus reduced visual feedback on motor learning and retention.
  • To investigate the effects of feedback frequency on specific motor performance metrics like RMS and median frequency.

Main Methods:

  • A randomized controlled trial involving 30 adolescent participants.
  • Three groups: control, 100% visual feedback, and 67% visual feedback.
  • Performance assessed via pretest, practice, posttest, and retention (24-hour delayed) trials measuring balance task execution.

Main Results:

  • The 67% feedback group demonstrated significantly lower Root Mean Square (RMS) error in the posttest compared to the pretest (p = 0.04).
  • Both control and 67% feedback groups showed significant reductions in median frequency from pretest to posttest (p < 0.05).
  • Both visual feedback groups exhibited improved performance in retention tests compared to pretests (p < 0.05).

Conclusions:

  • While immediate effects on motor learning were not consistently detected across all metrics, 67% augmented visual feedback appears effective for motor adaptation in adolescents.
  • Reduced visual feedback (67%) is recommended for enhancing motor adaptation in balance tasks.
  • Further research may explore the nuanced effects of feedback frequency on different aspects of motor skill acquisition and retention.