Contribution of upper-body strength, body composition, and maximal oxygen uptake to predict double poling power and overall performance in female cross-country skiers

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Publisher: National Strength and Conditioning Association
Document Type: Author abstract; Report
Length: 293 words

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Abstract :

Maximal oxygen uptake ([??][O.sub.2] max) is regarded as the most performance-differentiating physiological measure in cross-country (XC) skiing. In addition, upper-body strength and lean mass have been associated with double poling (DP) power in XC skiers. In this study, we tested upper-body maximal strength, lean mass, and ([??][O.sub.2]max's contributions to predict DP power production of different durations and the overall XC skiing performance level of elite female XC skiers. Thirteen skiers ([??][O.sub.2]max: 64.9 [+ or -] 4.2 ml x [kg.sup.-1] x [min.sup.-1]) performed one 30-second and one 3-minute DP performance test using a ski ergometer. The International Ski Federation's (FIS) ranking points determined their overall XC skiing performance. The skiers performed three 1-repetition maximal strength tests in poling-specific exercises that isolated the elbow extension, shoulder extension, and trunk flexion movements. Body composition was determined by a DXA scan, and [??][O.sub.2] max was tested in an incremental running test. Multiple regressions were used to predict power production in the 30-second and 3minute tests and FIS points. The 2 best predictions of 30-second DP power were lean upper-body mass and maximal upper-body strength (with the 3 strength tests normalized and pooled together as one variable) ([R.sup.2] = 0.84 and 0.81, p Key Words cross-country skiing, lean mass, maximal strength, ski ergometer

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Gale Document Number: GALE|A463753995