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Related Experiment Videos

Flexibility development in sprinters using EMG biofeedback and relaxation training.

M S Cummings, V E Wilson, E I Bird

    Biofeedback and Self-Regulation
    |September 1, 1984
    PubMed
    Summary

    Electromyographic (EMG) biofeedback and relaxation treatments showed no immediate advantage over stretching for hip flexibility. However, these methods demonstrated superior long-term flexibility gains, potentially reducing injury risk.

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    Area of Science:

    • Sports Medicine
    • Rehabilitation Science
    • Exercise Physiology

    Background:

    • Flexibility is crucial for athletic performance and injury prevention.
    • The effectiveness of different training modalities for improving flexibility requires further investigation.
    • Understanding long-term flexibility retention is important for athletes.

    Purpose of the Study:

    • To compare the effectiveness of electromyographic (EMG) biofeedback and relaxation treatment versus standard stretching for improving hip joint flexibility.
    • To assess the retention of flexibility gains over time.
    • To examine the impact of these interventions on sprinting performance.

    Main Methods:

    • 15 male and 15 female athletes were randomly assigned to a control (stretching), EMG biofeedback, or relaxation group.

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  • Experimental groups received eight 10-minute sessions twice weekly.
  • Flexibility was measured before, immediately after, and 2 and 4 weeks after the intervention period. Sprint performance was also assessed.

    • Main Results:

    • All groups showed improvements in sprint performance.
    • EMG biofeedback and relaxation were not superior to stretching for immediate flexibility gains.
    • Both EMG biofeedback and relaxation demonstrated superior flexibility retention compared to the control group at 2 and 4 weeks post-treatment.

    Conclusions:

    • While not immediately superior, EMG biofeedback and relaxation techniques offer enhanced long-term flexibility benefits.
    • Improved long-term flexibility may contribute to reduced injury incidence in athletes.
    • These findings suggest potential benefits of incorporating EMG biofeedback and relaxation for sustained flexibility improvements.