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Related Experiment Videos

Decrease in eccentric hamstring strength in runners in the Tirol Speed Marathon.

A Koller1, G Sumann, W Schobersberger

  • 1Department of Sports Medicine, University of Innsbruck Medical School, Innsbruck, Austria. arnold.koller@uklibk.ac.at

British Journal of Sports Medicine
|July 11, 2006
PubMed
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Overground running, like a marathon, leads to eccentric hamstring fatigue. This fatigue may increase the risk of knee injuries, suggesting a need for specific hamstring training.

Area of Science:

  • Sports Medicine
  • Biomechanics
  • Exercise Physiology

Background:

  • Local muscular endurance, particularly eccentric knee flexor strength, is crucial for maintaining running kinematics during treadmill exercise.
  • However, the transferability of these findings to overground running scenarios remains uncertain.

Purpose of the Study:

  • To investigate the association between overground running and the development of eccentric hamstring fatigue.

Main Methods:

  • Thirteen runners completed an isokinetic muscle assessment before and after a marathon.
  • The protocol included concentric and eccentric contractions of the quadriceps and hamstrings for both legs.

Main Results:

  • Eccentric peak hamstring torque significantly decreased in both thighs post-marathon.

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  • No significant changes were observed in other measured parameters.

    • Conclusions:

    • Marathon running is linked to eccentric hamstring fatigue.
    • This fatigue could be a risk factor for running-related knee and soft tissue injuries.
    • Eccentric hamstring training should be incorporated into runners' training regimens.