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The Contribution of...
The Contribution of Ski Poles to Aerodynamic Drag in Alpine Skiing
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- Supej, Matej (author)
- Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
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- Kalén, Anton (author)
- Högskolan i Skövde,Institutionen för informationsteknologi,Forskningsmiljön Informationsteknologi,Swedish Olympic Committee, Stockholm, Sweden,Skövde Artificial Intelligence Lab (SAIL)
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- Verdel, Nina (author)
- Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
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- Ogrin, Jan (author)
- Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
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- Holmberg, Hans-Christer (author)
- Luleå tekniska universitet,Hälsa, medicin och rehabilitering,School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada,Department of Health Sciences, Luleå University of Technology, Sweden ; School of Kinesiology, University of British Columbia, Vancouver, Canada
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(creator_code:org_t)
- MDPI, 2023
- 2023
- English.
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In: Applied Sciences. - : MDPI. - 2076-3417. ; 13:14
- Related links:
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https://doi.org/10.3...
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https://ltu.diva-por... (primary) (Raw object)
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https://his.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The present study was designed to determine the contribution of the cross-sectional area of the ski poles (Sp) to the total aerodynamic drag during alpine skiing. At three different wind speeds in a wind tunnel, 10 skiers assumed typical alpine skiing postures (high, middle, and tuck), and their frontal aerodynamic drag was assessed with a force plate and their cross-sectional area, along with that of their ski poles, determined by interactive image segmentation. The data collected were utilized to examine intra-subject variation in Sp, the effects of Sp on the coefficient of aerodynamic drag (Cd), and the product of Cd and total cross-sectional area (Cd∙S. The major findings were as follows: (i) Sp ranged from 0.0067 (tuck position) to 0.0262 m2 (middle position), contributing 2.2–4.8% of the total cross-sectional area, respectively; (ii) Sp was dependent on wind speed in the high and middle positions; (iii) intra-subject variations ranged from 0.0018 m2 (27.6%) in the tuck position to 0.0072 m2 (30.5%) in the high position; (iv) Sp exerted a likely effect on Cd and Cd∙S. The extensive intra- and inter-skier variability in Sp can account for as much as ~5% of the total frontal cross-sectional area and future investigations on how elite skiers optimize their positioning of the poles in a manner that reduces aerodynamic drag are warranted.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Keyword
- air resistance
- biomechanics
- force
- kinetics
- cross-sectional area
- coefficient of aerodynamic drag
- wind tunnel
- skiing position
- ski posture
- tuck
- Physiotherapy
- Fysioterapi
- Centre - Centre for Sports and Performance Technology (SPORTC)
- Centrumbildning - Centrum för idrotts- och prestationsteknologi (SPORTC)
- Skövde Artificial Intelligence Lab (SAIL)
Publication and Content Type
- ref (subject category)
- art (subject category)
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