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Biomechanical analy...
Biomechanical analysis of the “running” vs. “conventional” diagonal stride uphill techniques as performed by elite cross-country skiers
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- Pellegrini, Barbara (författare)
- CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto 38068, Italy; Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona 37129, Italy
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- Zoppirolli, Chiara (författare)
- CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto 38068, Italy; Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona 37129, Italy
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- Stella, Federico (författare)
- CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto 38068, Italy
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- Bortolan, Lorenzo (författare)
- CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto 38068, Italy; Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona 37129, Italy
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- Holmberg, Hans-Christer, 1958- (författare)
- Mittuniversitetet,Institutionen för hälsovetenskaper (HOV),Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund 83125, Sweden;
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- Schena, Federico (författare)
- CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto 38068, Italy; Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona 37129, Italy
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Journal of Sport and Health Science. - : Elsevier BV. - 2095-2546 .- 2213-2961. ; 11:1, s. 30-39
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Abstract
Ämnesord
Stäng
- Objective: To compare biomechanical aspects of a novel “running” diagonal stride (DSRUN) with “conventional” diagonal stride (DSCONV) skiing techniques performed at high speed. Methods: Ten elite Italian male junior cross-country skiers skied on a treadmill at 10 km/h and at a 10° incline utilizing both variants of the diagonal stride technique. The 3-dimensional kinematics of the body, poles, and roller skis; the force exerted through the poles and foot plantar surfaces; and the angular motion of the leg joints were determined. Results: Compared to DSCONV, DSRUN demonstrated shorter cycle times (1.05 ± 0.05 s vs. 0.75 ± 0.03 s (mean ± SD), p < 0.001) due to a shorter rolling phase (0.40 ± 0.04 s vs. 0.09 ± 0.04 s, p < 0.001); greater force applied perpendicularly to the roller skis when they had stopped rolling forward (413 ± 190 N vs. 890 ± 170 N, p < 0.001), with peak force being attained earlier; prolonged knee extension, with a greater range of motion during the roller ski-stop phase (28° ± 4° vs. 16° ± 3°, p = 0.00014); and more pronounced hip and knee flexion during most of the forward leg swing. The mechanical work performed against friction during rolling was significantly less with DSRUN than with DSCONV (0.04 ± 0.01 J/(m·kg) vs. 0.10 ± 0.02 J/(m·kg), p < 0.001). Conclusion: Our findings demonstrated that DSRUN is characterized by more rapid propulsion, earlier leg extension, and a greater range of motion of knee joint extension than DSCONV. Further investigations, preferably on snow, should reveal whether DSRUN results in higher acceleration and/or higher peak speed.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- Classical skiing
- Kinetics
- Roller skiing
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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