TY - JOUR
T1 - The Copenhagen Soccer Test: Physiological response and fatigue development
AU - Bendiksen, Mads
AU - Bischoff, Rasmus
AU - Randers, Morten Bredsgaard
AU - Mohr, Magni
AU - Rollo, Ian
AU - Suetta, Charlotte
AU - Bangsbo, Jens
AU - Krustrup, Peter
N1 - CURIS 2012 5200 020
PY - 2012/8
Y1 - 2012/8
N2 - Introduction: The aims of the study were 1) to evaluate whether a multifaceted simulated soccer game protocol, entitled the Copenhagen Soccer Test (CST), elicited a similar physiological loading as a competitive game (CG) and 2) to determine muscle metabolites, blood variables, and sprint performance in various phases of CST. Methods: Twelve Danish Second-and Third-Division soccer players participated in the study. On separate days, HR measurements, frequent blood sampling, and physical/technical tests were performed during 60-and 90-min versions of the CST during which repeated musculus vastus lateralis biopsies were collected. A CG was also played, where HR was recorded and pre-and post-game muscle biopsies and blood samples were collected. Results: No differences were observed between CST and CG in average HR (85% ± 1% and 86% ± 1% HRmax, P > 0.05) or recovery plasma creatine kinase (24 h: 312 ± 57 and 324 ± 76 U•L, P > 0.05). Muscle glycogen decreased (P < 0.05) from 459 ± 15 to 232 ± 30 mmol•kg dry weight (d.w.) during CST, which was not different from CG (P > 0.05). The rate of glycogen utilization was 4 ± 1 mmol•kg d.w.•min during the warm-up and the first 15 min of CST and 1 ± 1 mmol•kg d.w.•min (P < 0.05) from 60 to 90 min of CST. After 15 min of CST, muscle lactate was elevated (P < 0.05) approximately fivefold (24 ± 3 mmol•kg d.w.), and creatine phosphate was lowered (P < 0.05) by ∼60% (28 ± 4 mmol•kg d.w.). Sprint velocity (2 × 20 m) decreased (P < 0.05) by 7% during CST (5.2 ± 0.6 to 4.9 ± 0.7 m•s-1). Conclusions: The physiological response to the CST was reproducible and comparable to that of high-level CG. The CST allowed for rapid muscle sampling and revealed high creatine phosphate degradation throughout the test and a lowered glycogen utilization toward the end of the simulated game.
AB - Introduction: The aims of the study were 1) to evaluate whether a multifaceted simulated soccer game protocol, entitled the Copenhagen Soccer Test (CST), elicited a similar physiological loading as a competitive game (CG) and 2) to determine muscle metabolites, blood variables, and sprint performance in various phases of CST. Methods: Twelve Danish Second-and Third-Division soccer players participated in the study. On separate days, HR measurements, frequent blood sampling, and physical/technical tests were performed during 60-and 90-min versions of the CST during which repeated musculus vastus lateralis biopsies were collected. A CG was also played, where HR was recorded and pre-and post-game muscle biopsies and blood samples were collected. Results: No differences were observed between CST and CG in average HR (85% ± 1% and 86% ± 1% HRmax, P > 0.05) or recovery plasma creatine kinase (24 h: 312 ± 57 and 324 ± 76 U•L, P > 0.05). Muscle glycogen decreased (P < 0.05) from 459 ± 15 to 232 ± 30 mmol•kg dry weight (d.w.) during CST, which was not different from CG (P > 0.05). The rate of glycogen utilization was 4 ± 1 mmol•kg d.w.•min during the warm-up and the first 15 min of CST and 1 ± 1 mmol•kg d.w.•min (P < 0.05) from 60 to 90 min of CST. After 15 min of CST, muscle lactate was elevated (P < 0.05) approximately fivefold (24 ± 3 mmol•kg d.w.), and creatine phosphate was lowered (P < 0.05) by ∼60% (28 ± 4 mmol•kg d.w.). Sprint velocity (2 × 20 m) decreased (P < 0.05) by 7% during CST (5.2 ± 0.6 to 4.9 ± 0.7 m•s-1). Conclusions: The physiological response to the CST was reproducible and comparable to that of high-level CG. The CST allowed for rapid muscle sampling and revealed high creatine phosphate degradation throughout the test and a lowered glycogen utilization toward the end of the simulated game.
U2 - 10.1249/MSS.0b013e31824cc23b
DO - 10.1249/MSS.0b013e31824cc23b
M3 - Journal article
C2 - 22330015
SN - 0195-9131
VL - 44
SP - 1595
EP - 1603
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
IS - 8
ER -