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Force output in giant-slalom skiing: A practical model of force application effectiveness

Author

Listed:
  • Matt R Cross
  • Clément Delhaye
  • Jean-Benoit Morin
  • Maximilien Bowen
  • Nicolas Coulmy
  • Frédérique Hintzy
  • Pierre Samozino

Abstract

Alpine ski racers require diverse physical capabilities. While enhanced force production is considered key to high-level skiing, its relevance is convoluted. The aims of this study were to i) clarify the association between performance path length and velocity, ii) test the importance of radial force, and iii) explore the contribution of force magnitude and orientation to turn performance. Ski athletes (N = 15) were equipped with ski-mounted force plates and a global navigation satellite system to compute the following variables over 14 turns: path length (L), velocity normalized energy dissipation [Δemech/vin], radial force [Fr], total force (both limbs [Ftot], the outside limb, and the difference between limbs), and a ratio of force application (RF = Fr/Ftot). Data were course-averaged or separated into sectional turn groupings, averaged, and entered into stepped correlation and regression models. Our results support Δemech/vin as a discriminative performance factor (R2 = 0.50–0.74, p

Suggested Citation

  • Matt R Cross & Clément Delhaye & Jean-Benoit Morin & Maximilien Bowen & Nicolas Coulmy & Frédérique Hintzy & Pierre Samozino, 2021. "Force output in giant-slalom skiing: A practical model of force application effectiveness," PLOS ONE, Public Library of Science, vol. 16(1), pages 1-22, January.
    • Handle: RePEc:plo:pone00:0244698
    DOI: 10.1371/journal.pone.0244698
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