Pole length affects cross-country skiers’ performance in an 80-m double poling trial performed on snow from standing start
Deutscher übersetzter Titel: | Stocklänge beeinflusst die Leistung eines Skilangläufers bei einem Lauf über 80 Meter im Doppelstockschub auf Schnee mit Start aus dem Stand |
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Autor: | Hansen, Ernst Albin; Losnegard, Thomas |
Erschienen in: | Sports engineering |
Veröffentlicht: | 12 (2010), 4, S. 171-178, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1369-7072, 1460-2687 |
DOI: | 10.1007/s12283-010-0042-3 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201012009380 |
Quelle: | BISp |
Abstract
We investigated the hypothesis that longer and shorter poles would be faster and slower, respectively, than poles of self-selected length in all-out double poling. Eight elite cross-country skiers performed 80 m all-out double poling on snow performed from a standing start. Three trials with each of the pole lengths: self-selected, 7.5 cm shorter, and 7.5 cm longer than self-selected were performed. Time was recorded every 20 m and skiers were filmed during the last 40 m for calculation of cycle rate and length. Times at 80 m were 0.9 ± 0.7% shorter with longer poles than with self-selected poles (p ≤ 0.05), while they were 1.2 ± 1.0% slower with shorter poles (p ≤ 0.05). Much of these differences were established within the first 20 m. Calculated lead at 80 m with longer poles was 0.88 ± 0.65 m over self-selected poles (p ≤ 0.05). Mean cycle rate and length ranged from 1.35 to 1.45 Hz and from 4.84 to 5.52 m, respectively, across pole lengths (p > 0.05). Verf.-Referat