Muscle metabolism and fatigue during simulated ice hockey match-play in elite players
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Muscle metabolism and fatigue during simulated ice hockey match-play in elite players. / Vigh-Larsen, Jeppe F; Ermidis, Georgios; Rago, Vincenzo; Randers, Morten B; Fransson, Dan; Nielsen, Jakob L; Gliemann, Lasse; Piil, Jacob Feder; Morris, Nathan Bradley; De Paoli, Frank V; Overgaard, Kristian; Andersen, Thomas B; Nybo, Lars; Krustrup, Peter; Mohr, Magni.
In: Medicine and Science in Sports and Exercise, Vol. 52, No. 10, 2020, p. 2162-2171.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Muscle metabolism and fatigue during simulated ice hockey match-play in elite players
AU - Vigh-Larsen, Jeppe F
AU - Ermidis, Georgios
AU - Rago, Vincenzo
AU - Randers, Morten B
AU - Fransson, Dan
AU - Nielsen, Jakob L
AU - Gliemann, Lasse
AU - Piil, Jacob Feder
AU - Morris, Nathan Bradley
AU - De Paoli, Frank V
AU - Overgaard, Kristian
AU - Andersen, Thomas B
AU - Nybo, Lars
AU - Krustrup, Peter
AU - Mohr, Magni
N1 - CURIS 2020 NEXS 299
PY - 2020
Y1 - 2020
N2 - 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 8x1-min shifts separated by 2-min recovery intervals. Two vastus lateralis biopsies were obtained either during the game (n = 7) or pre- and post-game (n = 6). Venous blood samples were drawn pre-game and at the end of the first and last period (n = 14). Activity pattern and physiological responses were continuously monitored using local positioning system and heart rate recordings. Further, repeated-sprint ability was tested pre-game 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 5- and 3-fold, while muscle pH decreased (P≤0.05) from 7.31±0.04 pre-game to 6.99±0.07 and 7.13±0.11 during the first and last period, respectively. Muscle glycogen decreased by 53% post-game (P≤0.05) with ~65% of fast- and slow-twitch fibers depleted of glycogen. Blood lactate increased 6-fold (P≤0.05), while plasma free fatty acid levels increased 1.5- and 3-fold (P≤0.05) after the first and last period. Repeated-sprint ability was impaired (~3%; P≤0.05) post-game concomitant with a ~10% decrease in the number of accelerations and decelerations during the second and last period (P≤0.05).Conclusion: 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.
AB - 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 8x1-min shifts separated by 2-min recovery intervals. Two vastus lateralis biopsies were obtained either during the game (n = 7) or pre- and post-game (n = 6). Venous blood samples were drawn pre-game and at the end of the first and last period (n = 14). Activity pattern and physiological responses were continuously monitored using local positioning system and heart rate recordings. Further, repeated-sprint ability was tested pre-game 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 5- and 3-fold, while muscle pH decreased (P≤0.05) from 7.31±0.04 pre-game to 6.99±0.07 and 7.13±0.11 during the first and last period, respectively. Muscle glycogen decreased by 53% post-game (P≤0.05) with ~65% of fast- and slow-twitch fibers depleted of glycogen. Blood lactate increased 6-fold (P≤0.05), while plasma free fatty acid levels increased 1.5- and 3-fold (P≤0.05) after the first and last period. Repeated-sprint ability was impaired (~3%; P≤0.05) post-game concomitant with a ~10% decrease in the number of accelerations and decelerations during the second and last period (P≤0.05).Conclusion: 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.
KW - Faculty of Science
KW - Glycogen
KW - Performance
KW - High-intensity
KW - Intermittent exercise
KW - Team sport
KW - Fiber-type
U2 - 10.1249/MSS.0000000000002370
DO - 10.1249/MSS.0000000000002370
M3 - Journal article
C2 - 32496739
VL - 52
SP - 2162
EP - 2171
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
SN - 0195-9131
IS - 10
ER -
ID: 242610158