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Pole Length Influences Performance During On-Snow Skating in Female Cross-Country Skiers

Journal of Science in Sport and Exercise 2021年第4期3卷 348-354页

作者： Per-Øyvind Torvik Roland van den Tillaar Guro Bostad Øyvind Sandbakk Department of Sports Sciences and Physical Education Nord UniversityLevangerNorway Centre for Elite Sports Research Department of Neuromedicine and Movement ScienceNorwegian University of Science and TechnologyTrondheimNorway

Purpose The purpose of this study was to examine the effect of pole length on performance and technique selection during a simulated skating cross-country(XC)skiing competition on snow in female XC *** Nine female XC skiers and biathletes(VO2max 63.6±6.2 mL/min/kg,age 22.9±3.5 years,body height 1.69±0.1 m and body mass 60.8±4.6 kg)completed two 5-km skating time-trail with maximal *** athletes had a minimum 4.5 h of rest between the two races,which were performed in a random order:one with self-selected poles(89.0%±0.6%of body height)and one with 7.5 cm increased pole length(94.0%±0.5%of body height).Speed in set terrain sections was determined and the selection of sub-technique was self-reported immediately after each race based on a detailed review of the entire *** Skiers performed on average 7.1±7.1 s(P=0.029)faster with the long poles,with this difference occurring during the first 200 m and in the uphill parts of the track,in which~5% more G3 and~5% fewer G2 sub-techniques were chosen(both Pskiing technique was perceived to be~1.2±1.5 points better with long poles(P=0.038),while the physiological responses(i.e.,peak and average heart rate,and blood lactate concentration)did not differ between *** In conclusion,poles 7.5 cm longer than self-selected ones improved performance in skating,by enhancing speed in the initial phase(first 200 m)and in the uphill section of the *** addition,the longer poles induced more use of the G3 skating sub-technique.

关键词： XC skiing skiing performance skiing equipment Sub-technique selection

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