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Muscle Metabolism and Fatigue during Simulated Ice Hockey Match-Play in Elite Players
- Vigh-Larsen, J. F. (author)
- Ermidis, G. (author)
- Rago, V. (author)
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- Randers, M. B. (author)
- Nielsen, J. L. (author)
- Gliemann, L. (author)
- Piil, J. F. (author)
- Morris, N. B. (author)
- De Paoli, F. V. (author)
- Overgaard, K. (author)
- Andersen, T. B. (author)
- Nybo, L. (author)
- Krustrup, P. (author)
- Mohr, M. (author)
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- (creator_code:org_t)
- Ovid Technologies (Wolters Kluwer Health), 2020
- 2020
- English.
- In: Medicine and science in sports and exercise. - : Ovid Technologies (Wolters Kluwer Health). - 0195-9131 .- 1530-0315. ; 52:10, s. 2162-2171
- Journal article (peer-reviewed)
Abstract
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- 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 x 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(-1)). 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 similar to 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 (similar to 3%;P <= 0.05) postgame concomitant with a similar to 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.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Keyword
- glycogen
- performance
- high-intensity
- intermittent exercise
- team
- sport
- fiber-type
- high-intensity exercise
- glycogen availability
- performance
- carbohydrate
- physiology
- oxidation
- capacity
- fibers
- system
- soccer
- Sport Sciences
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Ermidis, G.
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- Nielsen, J. L.
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- Gliemann, L.
- Piil, J. F.
- Morris, N. B.
- De Paoli, F. V.
- Overgaard, K.
- Andersen, T. B.
- Nybo, L.
- Krustrup, P.
- Mohr, M.
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