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Related Experiment Videos

Mechanical jumping power in athletes.

D T Kirkendall, G M Street

    British Journal of Sports Medicine
    |December 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    The Bosco test measures muscular power using the stretch-shortening cycle. While athletic power varied slightly between sports, training significantly improved power output in indoor soccer players.

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    Area of Science:

    • Sports Science
    • Biomechanics
    • Exercise Physiology

    Background:

    • The Wingate cycle ergometer test assesses sustained muscular power but omits the eccentric phase, limiting its measurement of stored elastic energy.
    • The stretch-shortening cycle, involving eccentric and concentric muscle actions, is crucial for efficient mechanical power production in many athletic movements.

    Purpose of the Study:

    • To measure the mechanical power output of the entire stretch-shortening cycle in various athletic groups.
    • To compare power output across different sports and assess the impact of training on power development.

    Main Methods:

    • The Bosco et al. (1983) reciprocal jumping test was administered to 119 male athletes from 7 sports: professional ballet, indoor soccer, American football, collegiate outdoor soccer, basketball, wrestling, and amateur bobsled.

    Related Experiment Videos

  • A subset of 10 indoor soccer players was retested after 4 months of training to evaluate changes in power output.

    • Main Results:

    • The overall average power output across all athletes was 20.37 W.kg-1 for the 60-second test.
    • Ballet dancers and wrestlers exhibited significantly lower mechanical power compared to indoor soccer, basketball, and bobsled athletes (p < 0.05).
    • Retested indoor soccer players showed a significant improvement in power output from 20.8 to 24.3 W.kg-1 after 4 months of training (p < 0.05).

    Conclusions:

    • The Bosco test effectively measures stretch-shortening cycle power, revealing performance differences between certain athletic groups.
    • While inter-sport power differences were modest, the study highlights the significant impact of targeted training on enhancing muscular power.