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Related Experiment Videos

Training-Related Changes in Force-Power Profiles: Implications for the Skeleton Start.

Steffi L Colyer, Keith A Stokes, James L J Bilzon

    International Journal of Sports Physiology and Performance
    |September 6, 2017
    PubMed
    Summary
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    Skeleton athletes can improve start performance by focusing on increasing maximum muscle contraction velocity. Training phases influence force-power capabilities, with velocity-oriented exercises yielding better results.

    Area of Science:

    • Sports Science
    • Biomechanics
    • Human Movement

    Background:

    • Skeleton start performance is critically dependent on athletes' force-power characteristics.
    • Understanding how these characteristics evolve during training is key to optimizing performance.

    Purpose of the Study:

    • To characterize changes in skeleton athletes' force-power profiles over an 18-month period.
    • To investigate the relationship between these force-power changes and improvements in sled start velocity.

    Main Methods:

    • Assessed force-power profiles using an incremental leg-press test.
    • Measured 15-m sled velocity with photocells in elite and talent-squad skeleton athletes.
    • Monitored changes across two 6-month training periods and one 5-month competition season.
    Keywords:
    athletesice trackleg pressneuromuscular adaptation

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    Main Results:

    • Initial strength phases showed increased maximum force (Fmax) and decreased maximum velocity (Vmax), more pronounced in talent athletes.
    • Winter period saw decreased Fmax and increased Vmax in both elite and talent athletes.
    • Velocity-oriented training correlated with greater improvements in sled velocity (r = .42 and -.45).

    Conclusions:

    • Force-power generating capabilities in skeleton athletes can be modulated through different training phases.
    • Prioritizing the enhancement of maximum muscle contraction velocity is crucial for improving skeleton start performance.