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Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing.

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  • معلومة اضافية
    • NAICS/Industry Codes:
      451110 Sporting Goods Stores
      423910 Sporting and Recreational Goods and Supplies Merchant Wholesalers
      414470 Amusement and sporting goods merchant wholesalers
      339920 Sporting and Athletic Goods Manufacturing
      451112 Ski equipment and supplies specialty stores
      713920 Skiing Facilities
      541420 Industrial Design Services
    • Abstract:
      Background: There is limited empirical knowledge about the effect of ski geometry, particularly in the context of injury prevention in alpine ski racing. We investigated the effect of sidecut radius on biomechanical variables related to the mechanics of turning.Methods: During a field experiment, six European Cup level athletes skied on three different pairs of giant slalom (GS) skis varying in sidecut radii (30 m, 35 m and 40 m). Using a video-based three-dimensional (3D) kinematic system, a 22-point body segment model of the athletes was reconstructed in 3D, and the variables ground reaction force, centre of mass (COM) speed, COM turn radius, ski turn radius, edge angle, fore/aft position and skid angle were calculated.Results: While steering out of the fall line after gate passage, ground reaction force significantly differed between the 30 m and 40 m skis and between the 35 m and 40 m skis. These differences were mainly explainable by larger COM turn radii when skiing on the 40 m ski. During the same turn phase, significant differences in ski turn radius also were found, but there were no differences in edge angle, fore/aft position and skid angle.Summary: The sidecut-induced reduction in ground reaction force and the sidecut-induced increase in centre of mass and ski turn radius observed in this study provides indirect evidence of reduced self-steering of the ski. Self-steering plays a central role in the mechanism of anterior cruciate ligament rupture in alpine ski racing. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Copyright of British Journal of Sports Medicine is the property of BMJ Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
    • Author Affiliations:
      1Department of Sport Science and Kinesiology, University of Salzburg, Hallein-Rif, Austria
      2Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
    • ISSN:
      0306-3674
    • Accession Number:
      10.1136/bjsports-2015-095737
    • Accession Number:
      111993569
  • Citations
    • ABNT:
      SPÖRRI, J. et al. Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing. British Journal of Sports Medicine, [s. l.], v. 50, n. 1, p. 14–19, 2016. DOI 10.1136/bjsports-2015-095737. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=111993569&custid=s8280428. Acesso em: 12 jul. 2020.
    • AMA:
      Spörri J, Kröll J, Gilgien M, Müller E. Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing. British Journal of Sports Medicine. 2016;50(1):14-19. doi:10.1136/bjsports-2015-095737.
    • AMA11:
      Spörri J, Kröll J, Gilgien M, Müller E. Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing. British Journal of Sports Medicine. 2016;50(1):14-19. doi:10.1136/bjsports-2015-095737
    • APA:
      Spörri, J., Kröll, J., Gilgien, M., & Müller, E. (2016). Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing. British Journal of Sports Medicine, 50(1), 14–19. https://doi.org/10.1136/bjsports-2015-095737
    • Chicago/Turabian: Author-Date:
      Spörri, Jörg, Josef Kröll, Matthias Gilgien, and Erich Müller. 2016. “Sidecut Radius and the Mechanics of Turning-Equipment Designed to Reduce Risk of Severe Traumatic Knee Injuries in Alpine Giant Slalom Ski Racing.” British Journal of Sports Medicine 50 (1): 14–19. doi:10.1136/bjsports-2015-095737.
    • Harvard:
      Spörri, J. et al. (2016) ‘Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing’, British Journal of Sports Medicine, 50(1), pp. 14–19. doi: 10.1136/bjsports-2015-095737.
    • Harvard: Australian:
      Spörri, J, Kröll, J, Gilgien, M & Müller, E 2016, ‘Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing’, British Journal of Sports Medicine, vol. 50, no. 1, pp. 14–19, viewed 12 July 2020, .
    • MLA:
      Spörri, Jörg, et al. “Sidecut Radius and the Mechanics of Turning-Equipment Designed to Reduce Risk of Severe Traumatic Knee Injuries in Alpine Giant Slalom Ski Racing.” British Journal of Sports Medicine, vol. 50, no. 1, Jan. 2016, pp. 14–19. EBSCOhost, doi:10.1136/bjsports-2015-095737.
    • Chicago/Turabian: Humanities:
      Spörri, Jörg, Josef Kröll, Matthias Gilgien, and Erich Müller. “Sidecut Radius and the Mechanics of Turning-Equipment Designed to Reduce Risk of Severe Traumatic Knee Injuries in Alpine Giant Slalom Ski Racing.” British Journal of Sports Medicine 50, no. 1 (January 2016): 14–19. doi:10.1136/bjsports-2015-095737.
    • Vancouver/ICMJE:
      Spörri J, Kröll J, Gilgien M, Müller E. Sidecut radius and the mechanics of turning-equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing. British Journal of Sports Medicine [Internet]. 2016 Jan [cited 2020 Jul 12];50(1):14–9. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=111993569&custid=s8280428