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Related Experiment Videos

Does training have consequences for the walk-run transition speed?

Hélène Beaupied1, Franck Multon, Paul Delamarche

  • 1Laboratoire de Physiologie et de Biomécanique de 1'Exercice Musculaire, UFR. APS, Université Rennes, 2, Avenue Charles Tillon, CS 24 414, 35044, Rennes, France. helene_beaupied@yahoo.fr

Human Movement Science
|March 8, 2003
PubMed
Summary

The walk-run transition speed is influenced by training type. Specific training, like sprinting or endurance, alters how the body transitions between walking and running, impacting energy expenditure and mechanical work.

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Area of Science:

  • Biomechanics
  • Human Physiology
  • Sports Science

Background:

  • The walk-run transition phenomenon is often studied focusing on either mechanical aspects or energy expenditure, but rarely both concurrently.
  • The interplay between mechanical and energetic variables in the walk-run transition is known to be modulated by training status and type.

Purpose of the Study:

  • To investigate the link between walk-run transition speed and training type by concurrently analyzing mechanical and energetic parameters.
  • To determine if theoretical transition speeds, based on metabolic energy expenditure (St(1)) and internal work (St(2)), differ across training groups.

Main Methods:

  • Calculation of two theoretical transition speeds: St(1) based on metabolic energy expenditure and St(2) based on internal work.
  • Inclusion of three subject groups: untrained, sprint-trained, and endurance-trained men.

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  • Experimental protocol involving walking and running on a treadmill at incrementally increasing speeds.

    • Main Results:

    • The relationship between St(1) and St(2) varied significantly between the training groups.
    • Sprint-trained individuals exhibited a notably lower St(2) compared to St(1).
    • Untrained subjects displayed the inverse relationship, with St(1) being lower than St(2).

    Conclusions:

    • The walk-run transition speed is demonstrably linked to an individual's type of training.
    • Acquiring specific running techniques through targeted training influences the biomechanical and energetic characteristics of the walk-run transition.