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Force-velocity prof...
Force-velocity profiling of sprinting athletes: single-run vs. multiple-run methods
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Helland, C. (författare)
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Haugen, T. (författare)
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- Rakovic, Elvir (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kost- och idrottsvetenskap,Department of Food and Nutrition, and Sport Science
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Eriksrud, O. (författare)
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Seynnes, O. (författare)
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Mero, A. A. (författare)
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Paulsen, G. (författare)
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(creator_code:org_t)
- 2018-12-05
- 2019
- Engelska.
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Ingår i: European Journal of Applied Physiology. - : Springer Science and Business Media LLC. - 1439-6319 .- 1439-6327. ; 119:2, s. 465-473
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Purpose This study explored the agreement between a single-run and a multiple-run method for force-velocity (Fv) profiling of sprinting athletes; we evaluated both absolute values and changes over time caused by sprint training. Methods Seventeen female handball players (23 +/- 3 years, 177 +/- 7 cm, 73 +/- 6 kg) performed 30 m un-resisted and resisted sprints (50, 80 and 110 N resistance) before and after an 8-week sprint training intervention. Two approaches were used to calculate theoretical maximal velocity (v0), horizontal force (F0), power (Pmax), and the force-velocity slope (SFv): (1) the single-run method, based on inverse dynamics applied to the centre-of-mass movement, was calculated from anthropometric and sprint split time data; and (2) the multiple-run method, where peak velocity from un-resisted and resisted sprints were plotted against the horizontal resistances. Results Trivial differences in v0 (0.7%) were observed between the two calculation methods. Corresponding differences for F0, Pmax and SFv were 16.4, 15.6 and 17.6%, respectively (most likely; very large effect size). F0 showed poor agreement between the methods (r = 0.26 and 0.16 before and after the intervention). No substantial correlation between the changes (from pre-to post-training tests) in SFV calculated with the single-run and the multiple-run methods were observed (r = 0.02). Conclusions This study revealed poor agreement between the Fv relationships of the investigated calculation methods. In practice, both methods may have a purpose, but the single-run and the multiple-run methods appear to measure somewhat different sprint properties and cannot be used interchangeably.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- Acceleration
- Running
- Sprint mechanical properties
- Testing
- cycle ergometer
- running speed
- maximal power
- muscle
- performance
- output
- limits
- Physiology
- Sport Sciences
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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