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Scaling oxygen consumption to body mass in real elite cross-country skiing performances
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science.ORCID iD: 0000-0002-7178-5357
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science.
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science.ORCID iD: 0000-0001-8360-2100
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science.
2009 (English)In: Book of Abstracts: Sport sciences: Nature, Nurture and Culture / [ed] Loland, S., et al., 2009, 351-352 p.Conference paper, Published paper (Refereed)
Abstract [en]

Introduction: Which are the main physiological differences between a successful and less successful cross-country skier? To our knowledgeno previous studies have examined a real elite cross-country ski competition. Main purpose of this study was therefore to validatecommonly used test parameters to skiing time and to International Ski Federation (FIS) overall seasonal ranking points and to createmultiple regression models to predict skiing performances.Methods: Twelve highly motivated male Swedish national elite cross-country skiers completed a test battery consisting of: isokinetic kneeextensor peak torque tests at three different velocities; three different vertical jumps tests; two-part treadmill roller skiing test determininglactate markers, maximal oxygen consumption (VO2max) and time to exhaustion; 60 and 360 s double poling tests determining meanupper-body power (DP60Pmean) (DP360Pmean) and mean oxygen consumption (DP60VO2mean) (DP360VO2mean).Performance data were collected from the Swedish National Championship (SNC) in cross-country skiing (13-17 March 2008): 15-km withindividual start in classical technique (SNC15); 30-km double pursuit with mass-start (SNC30); sprint prolog in free-style technique(SNCsprint). In addition to ski races, overall seasonal ski ranking points were collected from FIS 3rd Cross-Country Points List 2007/2008published before SNC for distance (FISdist) and sprint (FISsprint) races.Correlations between test parameters and performance data were established using Pearson´s correlation analysis. Prediction modelswere created using standard multiple linear regression analysis.Results: Time to exhaustion during the incremental treadmill roller ski test is best correlated with both SNC15 (r = -0.86, p < 0.001) andSNC30 (r = -0.81, p < 0.01). For SNC15 significant correlations were shown with VO2max both absolute and relative to body weight, lactatemarkers, DP60Pmean and DP60VO2mean. Corresponding correlations for SNC30 were: lactate markers, DP60VO2mean and percentagedecrease in mean knee extension peak torque when comparing highest and lowest velocities. Highest correlation coefficient forSNCsprint was found for DP60Pmean (r = -0.93, p < 0.05). Significant correlations for SNCsprint was also detected for DP360Pmean aswell as DP360VO2mean and jump height in squat jump.Prediction models explain 68, 91, 68, 77 and 82% of the variance in performance for SNC15, SNC30, SNCsprint, FISdist and FISsprint,respectively.Discussion: Correlations found in this study have validated several commonly used physiological tests with real elite cross-country skiingperformances. Frequently investigated test parameters like VO2max and anaerobic thresholds are of great importance for success incross-country skiing. Many recent research studies have focused on upper-body capacity and we could confirm that high mean powerproduction in double poling is necessary to be successful as elite skier in both sprint and distance races.

Place, publisher, year, edition, pages
2009. 351-352 p.
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:du-11304ISBN: 978-82-502-0420-1 (print)OAI: oai:DiVA.org:du-11304DiVA: diva2:571400
Conference
14th Annual Congress of the European College of Sport Science, Oslo/Norway, June 24-27, 2009
Available from: 2012-11-22 Created: 2012-11-22 Last updated: 2015-12-21Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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Language
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