Biomechanical differences in double poling between sexes and level of performance during a classical cross-country skiing competition
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.
© Copyright 2019 Journal of Sports Sciences. Taylor & Francis. Kaikki oikeudet pidätetään.
Aiheet: | murtomaahiihto tekniikka biomekaniikka miespuolinen naispuolinen |
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Aihealueet: | kestävyys urheilu |
Tagging: | klassische Technik Doppelstockschub |
DOI: | 10.1080/02640414.2019.1577119 |
Julkaisussa: | Journal of Sports Sciences |
Julkaistu: |
2019
|
Vuosikerta: | 37 |
Numero: | 14 |
Sivuja: | 1582-1590 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |