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Reliability and validity of a new double poling ergometer for cross-country skiers
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Nationellt Vintersportcentrum / Swedish Winter Sports Research Centre)ORCID iD: 0000-0002-3814-6246
Responsible organisation
2008 (English)In: Journal of Sports Sciences, ISSN 0264-0414, Vol. 26, no 2, 171-179 p.Article in journal (Refereed) Published
Abstract [en]

Thirty-eight competitive cross-country skiers were divided into three groups to assess the reliability and validity of a new double poling ergometer. Group A (n = 22) performed two maximal 60-s tests, Group B (n = 8) repeated peak oxygen uptake tests on the double poling ergometer, and Group C (n = 8) performed a maximal 6-min test on the double poling ergometer and a double poling time-trial on snow. The correlation between the power calculated at the flywheel and the power applied at the base of the poles was r = 0.99 (P < 0.05). The power at the poles was 50 - 70% higher than that at the flywheel. There was a high test - retest reliability in the two 60-s power output tests (coefficient of variation = 3.0%) and no significant difference in peak oxygen uptake in the two 6-min all-out tests (coefficient of variation = 2.4%). There was a strong correlation between the absolute (W) and relative power (W . kg(-1)) output in the 6-min double poling ergometer test and the double poling performance on snow (r = 0.86 and 0.89 respectively; both P < 0.05). In conclusion, our results show that the double poling ergometer has both high reliability and validity. However, the power calculated at the flywheel underestimated the total power produced and needs to be corrected for in ergonomic estimations.

Place, publisher, year, edition, pages
2008. Vol. 26, no 2, 171-179 p.
Keyword [sv]
idrottsvetenskap
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-4479DOI: 10.1080/02640410701372685ISI: 000252350100008Scopus ID: 2-s2.0-36448935333Local ID: 5513OAI: oai:DiVA.org:miun-4479DiVA: diva2:29511
Available from: 2008-11-17 Created: 2008-11-17 Last updated: 2009-07-27Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf