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Biomechanical differences in double poling between sexes and level of performance during a classical cross-country skiing competition
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
The Arctic university of Norway, Tromsø, Norway.
University of Salzburg, Salzburg, Austria.ORCID iD: 0000-0002-6685-1540
2019 (English)In: Journal of Sports Sciences, ISSN 0264-0414, E-ISSN 1466-447X, Vol. 37, no 14, p. 1582-1590Article in journal (Refereed) Published
Abstract [en]

Biomechanical differences in double poling (DP) between sex and performance level were investigated in female and male cross-country skiers during a classical race (10/15 km). Skiers were divided into faster and slower on basis of race performance: females faster (n=20), females slower (n=20), males faster (n=20), and males slower (n=20). Based on video analysis while DP in a flat section of the track, joint and pole angles at pole plant (PP) and pole-off, cycle characteristics and the use and coordination pattern of heel-raise (raise of heels from the ground to have a higher body position at PP) were analysed. Faster females and males had 4.3% and 7.8% higher DP velocity than their slower counterparts (both P<0.001). Faster males had 6.5% longer cycles than slower males (P<0.001). Faster skiers stopped heel-raise later than slower skiers (females: 2.0±3.4% vs. −1.0±3.5%, P<0.05; males: 3.9±2.4% vs. 0.8±3.2% of cycle time in relation to PP, P<0.001). At PP, faster skiers and male skiers had a smaller pole angle and greater ankle to hip and ankle to shoulder angle with respect to vertical, resulting in a more distinct forward body lean. However, the majority of the differences are likely due to higher DP velocity.

Place, publisher, year, edition, pages
2019. Vol. 37, no 14, p. 1582-1590
Keywords [en]
Cycle characteristics, heel-raise, joint angles, kinematics, pole angles, video analysis
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-35635DOI: 10.1080/02640414.2019.1577119ISI: 000473472400003PubMedID: 30747038Scopus ID: 2-s2.0-85067241909OAI: oai:DiVA.org:miun-35635DiVA, id: diva2:1288660
Available from: 2019-02-14 Created: 2019-02-14 Last updated: 2019-08-09Bibliographically approved

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Jonsson, MalinStöggl, Thomas

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