Bucher, Elias; Sandbakk, Øyvind; Donath, Lars; Roth, Ralf; Zahner, Lukas; Faude, Oliver (2018). Exercise-induced trunk fatigue decreases double poling performance in well-trained cross-country skiers European Journal of Applied Physiology, 118(10), pp. 2077-2087. Springer 10.1007/s00421-018-3938-4
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Bucher_2018_Exercise-induced trunk fatigue decreases double poling performance in well-trained cross-country skiers.pdf - Published Version Available under License Publisher holds Copyright (National Licenses). Download (1MB) | Preview |
PURPOSE: To examine the effects of exercise-induced trunk fatigue on double poling performance, physiological responses and trunk strength in cross-country skiers. METHODS: Sixteen well-trained male cross-country skiers completed two identical pre- and post-performance tests, separated by either a 25-min trunk fatiguing exercise sequence or rest period in a randomized, controlled cross-over design. Performance tests consisted of a maximal trunk flexion and extension test, followed by a 3-min double poling (DP) test on a ski ergometer. RESULTS: Peak torque during isometric trunk flexion (- 66%, p lt; .001) and extension (- 7.4%, p = .03) decreased in the fatigue relative to the control condition. Mean external power output during DP decreased by 14% (p lt; .001) and could be attributed both to reduced work per cycle (- 9%, p = .019) and a reduced cycle rate (- 6%, p = .06). Coinciding physiological changes in peak oxygen uptake (- 6%, p lt; .001) and peak ventilation (- 7%, p lt; .001) could be observed. Skiers chose a more even-pacing strategy when fatigued, with the performance difference between fatigue and control condition being most prominent during the first 2 min of the post-test. CONCLUSIONS: In well-trained cross-country skiers, exercise-induced trunk fatigue led to a substantial decrease in DP performance, caused by both decreased work per cycle and cycle rate and accompanied by reduced aerobic power. Hence, improved fatigue resistance of the trunk may therefore be of importance for high-intensity DP in cross-country skiing.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Ausdauer |
Name: |
Bucher, Elias; Sandbakk, Øyvind; Donath, Lars; Roth, Ralf; Zahner, Lukas and Faude, Oliver |
ISSN: |
1439-6327 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Service Account |
Date Deposited: |
06 Nov 2020 09:22 |
Last Modified: |
16 Aug 2023 11:10 |
Publisher DOI: |
10.1007/s00421-018-3938-4 |
PubMed ID: |
30006669 |
Uncontrolled Keywords: |
Core Ergometer Power output Ski Technique Leistungssport Ausdauer |
ARBOR DOI: |
10.24451/arbor.11007 |
URI: |
https://arbor.bfh.ch/id/eprint/11007 |
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