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Full course macro-kinematic analysis of a 10 km classical cross-country skiing competition
Univ Canberra, ACT, Australia.ORCID iD: 0000-0002-5251-894X
APPSEN Pty Ltd, Canberra, ACT, Australia.
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Swedish Wintersport Research Centre)ORCID iD: 0000-0002-3814-6246
Univ Canberra, ACT, Australia.
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2017 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, no 8, article id e0182262Article in journal (Refereed) Published
Abstract [en]

In this study micro-sensors were employed to analyse macro-kinematic parameters during a classical cross-country skiing competition (10 km, 2-lap). Data were collected from eight male participants during the Australian championship competition wearing a single microsensor unit (MinimaxX (TM), S4) positioned on their upper back. Algorithms and visual classification were used to identify skiing sub-techniques and calculate velocities, cycle lengths (CL) and cycle rates (CR) over the entire course. Double poling (DP) was the predominant cyclical sub-technique utilised (43 +/- 5% of total distance), followed by diagonal stride (DS, 16 +/- 4%) and kick double poling (KDP, 5 +/- 4%), with the non-propulsive Tuck technique accounting for 24 +/- 4% of the course. Large within-athlete variances in CL and CR occurred, particularly for DS (CV% = 25 +/- 2% and CV% = 15 +/- 2%, respectively). For all sub-techniques the mean CR on both laps and for the slower and faster skiers were similar, while there was a trend for the mean velocities in all sub-techniques by the faster athletes to be higher. Overall velocity and mean DP-CL were significantly higher on Lap 1, with no significant change in KDP-CL or DS-CL between laps. Distinct individual velocity thresholds for transitions between sub-techniques were observed. Clearly, valuable insights into cross-country skiing performance can be gained through continuous macro-kinematic monitoring during competition.

Place, publisher, year, edition, pages
2017. Vol. 12, no 8, article id e0182262
National Category
Sport and Fitness Sciences
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URN: urn:nbn:se:miun:diva-31870DOI: 10.1371/journal.pone.0182262ISI: 000406766500055PubMedID: 28763504Scopus ID: 2-s2.0-85026558636OAI: oai:DiVA.org:miun-31870DiVA, id: diva2:1149821
Available from: 2017-10-17 Created: 2017-10-17 Last updated: 2018-02-22Bibliographically approved

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Marsland, FinnHolmberg, Hans-Christer
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