Muscle Metabolism and Fatigue during Simulated Ice Hockey Match-play in Elite Players

Jeppe F Vigh-Larsen, Georgios Ermidis, Vincenzo Rago, Morten B Randers, Dan Fransson, Jakob L Nielsen, Lasse Gliemann, Jacob F Piil, Nathan B Morris, Frank V De Paoli, Kristian Overgaard, Thomas B Andersen, Lars Nybo, Peter Krustrup, Magni Mohr

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

PURPOSE: The present study investigated muscle metabolism and fatigue during simulated elite male ice hockey match-play.

METHODS: Thirty U20 male national team players completed an experimental game comprising three periods of 8 × 1-min shifts separated by 2-min recovery intervals. Two vastus lateralis biopsies were obtained either during the game (n = 7) or pregame and postgame (n = 6). Venous blood samples were drawn pregame and at the end of the first and last periods (n = 14). Activity pattern and physiological responses were continuously monitored using local positioning system and heart rate recordings. Further, repeated-sprint ability was tested pregame and after each period.

RESULTS: Total distance covered was 5980 ± 199 m with almost half the distance covered at high skating speeds (>17 km·h). Average and peak on-ice heart rate was 84% ± 2% and 97% ± 2% of maximum heart rate, respectively. Muscle lactate increased (P ≤ 0.05) more than fivefold and threefold, whereas muscle pH decreased (P ≤ 0.05) from 7.31 ± 0.04 pregame to 6.99 ± 0.07 and 7.13 ± 0.11 during the first and last periods, respectively. Muscle glycogen decreased by 53% postgame (P ≤ 0.05) with ~65% of fast- and slow-twitch fibers depleted of glycogen. Blood lactate increased sixfold (P ≤ 0.05), whereas plasma free fatty acid levels increased 1.5-fold and threefold (P ≤ 0.05) after the first and last periods. Repeated-sprint ability was impaired (~3%; P ≤ 0.05) postgame concomitant with a ~10% decrease in the number of accelerations and decelerations during the second and last periods (P ≤ 0.05).

CONCLUSIONS: Our findings demonstrate that a simulated ice hockey match-play scenario encompasses a high on-ice heart rate response and glycolytic loading resulting in a marked degradation of muscle glycogen, particularly in specific sub-groups of fibers. This may be of importance both for fatigue in the final stages of a game and for subsequent recovery.

Original languageEnglish
JournalMedicine and Science in Sports and Exercise
Volume52
Issue number10
Pages (from-to)2162-2171
ISSN0195-9131
DOIs
Publication statusPublished - Oct 2020

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    Vigh-Larsen, J. F., Ermidis, G., Rago, V., Randers, M. B., Fransson, D., Nielsen, J. L., Gliemann, L., Piil, J. F., Morris, N. B., De Paoli, F. V., Overgaard, K., Andersen, T. B., Nybo, L., Krustrup, P., & Mohr, M. (2020). Muscle Metabolism and Fatigue during Simulated Ice Hockey Match-play in Elite Players. Medicine and Science in Sports and Exercise, 52(10), 2162-2171. https://doi.org/10.1249/MSS.0000000000002370