The Marathon Skate in Nordic Skiing Performed on Roller Skates, Roller Skis, and Snow Skis

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Abstract
In the past few years there has been a change from emphasizing the classical cross-country ski technique to introducing the skating technique. Use of the skating stride has led to the adoption of roller skates instead of the ratchet-type roller skis for dryland training. Therefore the question arises as to whether the roller skates simulate the movement pattern observed on snow. This study attempted to answer this question and to evaluate the movement similarity between a newly designed skating-specific roller ski and snow skis in performing the skating stride. The marathon skate was chosen for analysis as it was the most established and consistent skating stride. Biomechanical cinematography was used to acquire a sagittal and anterior view of the skiers. Temporal and angular kinematic data were collected. Both dryland devices approximated the snow skiing pattern, yet it was found that due to the discrepancies in the propulsion phase between the roller skates and the snow skis, the “Nordic Skate” roller skis proved to more closely simulate the on-snow technique.

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