Is there an optimal pole length for double poling in cross country skiing?
Deutscher übersetzter Titel: | Gibt es eine optimale Stocklänge für die Doppelstocktechnik im Langlauf? |
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Autor: | Onasch, Franziska; Killick, Anthony; Herzog, Walter |
Erschienen in: | Journal of applied biomechanics |
Veröffentlicht: | 33 (2017), 3, S. 197-202, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1065-8483, 1543-2688 |
DOI: | 10.1123/jab.2016-0071 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201709008123 |
Quelle: | BISp |
Abstract des Autors
The aim of this study was to determine the effects of pole length on energy cost and kinematics in cross country double poling. Seven sub-elite male athletes were tested using pole sets of different lengths (ranging between 77% and 98% of participants’ body height). Tests were conducted on a treadmill, set to a 2% incline and an approximate racing speed. Poling forces, contact times, and oxygen uptake were measured throughout the testing. Pole length was positively correlated with ground contact time (r = .57, p < .001) and negatively correlated with poling frequency (r = −.48, p = .003). Pole length was also positively correlated with pole recovery time and propulsive impulse produced per poling cycle (r = .36, p = .031; r = .35, p = .042, respectively). Oxygen uptake and pole length were negatively correlated (r = −.51, p = .004). This acute study shows that increasing pole length for double poling in sub-elite cross country skiers under the given conditions seems to change the poling mechanics in distinct ways, resulting in a more efficient poling action by decreasing an athlete’s metabolic cost.