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Analysis of a sprint ski race and associated laboratory determinants of world-class performance
Human Movement Science Programme, Norwegian University of Science and Technology.
Human Movement Science Programme, Norwegian University of Science and Technology, Trondheim, Norway.
Human Movement Science Programme, Norwegian University of Science and Technology, Trondheim, Norway.
The Norwegian School of Sport Sciences, Oslo, Norway.
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2011 (English)In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 111, no 6, p. 947-957Article in journal (Refereed) Published
Abstract [en]

This investigation was designed to analyze the time-trial (STT) in an international cross-country skiing sprint skating competition for (1) overall STT performance and relative contributions of time spent in different sections of terrain, (2) work rate and kinematics on uphill terrain, and (3) relationships to physiological and kinematic parameters while treadmill roller ski skating. Total time and times in nine different sections of terrain by 12 world-class male sprint skiers were determined, along with work rate and kinematics for one specific uphill section. In addition, peak oxygen uptake (VO2peak), gross efficiency (GE), peak speed (Vpeak), and kinematics in skating were measured. Times on the last two uphill and two final flat sections were correlated to overall STT performance (r = ~-0.80, P < 0.001). For the selected uphill section, speed was correlated to cycle length (r = -0.75, P < 0.01) and the estimated work rate was approximately 160% of peak aerobic power. VO2peak, GE, Vpeak, and peak cycle length were all correlated to STT performance (r = ~-0.85, P < 0.001). More specifically, VO2peak and GE were correlated to the last two uphill and two final flat section times, whereas Vpeak and peak cycle length were correlated to times in all uphill, flat, and curved sections except for the initial section (r = ~-0.80, P < 0.01). Performances on uphill and flat terrain in the latter part were the most significant determinants of overall STT performance. Peak oxygen uptake, efficiency, peak speed, and peak cycle length were strongly correlated to overall STT performance, as well as to performance in different sections of the race.

Place, publisher, year, edition, pages
2011. Vol. 111, no 6, p. 947-957
Keywords [en]
Aerobic power; Anaerobic power; Cycle length; Efficiency; Speed; Work rate
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-11885DOI: 10.1007/s00421-010-1719-9ISI: 000290539100006Scopus ID: 2-s2.0-79958105805OAI: oai:DiVA.org:miun-11885DiVA, id: diva2:332023
Projects
Integrative Physiologi & BiomechanicsAvailable from: 2010-07-29 Created: 2010-07-29 Last updated: 2017-12-12Bibliographically approved

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Holmberg, Hans-Christer

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