Maximal voluntary contraction force, SR function and glycogen resynthesis during the first 72 h after a high-level competitive soccer game

TY - JOUR

T1 - Maximal voluntary contraction force, SR function and glycogen resynthesis during the first 72 h after a high-level competitive soccer game

AU - Krustrup, Peter

AU - Ørtenblad, Niels

AU - Nielsen, Joachim

AU - Nybo, Lars

AU - Gunnarsson, Thomas P

AU - Iaia, F Marcello

AU - Madsen, Klavs

AU - Stephens, Francis

AU - Greenhaff, Paul

AU - Bangsbo, Jens

N1 - CURIS 2011 5200 049

PY - 2011/12

Y1 - 2011/12

N2 - The aim of this study was to examine maximal voluntary knee-extensor contraction force (MVC force), sarcoplasmic reticulum (SR) function and muscle glycogen levels in the days after a high-level soccer game when players ingested an optimised diet. Seven high-level male soccer players had a vastus lateralis muscle biopsy and a blood sample collected in a control situation and at 0, 24, 48 and 72 h after a competitive soccer game. MVC force, SR function, muscle glycogen, muscle soreness and plasma myoglobin were measured. MVC force sustained over 1 s was 11 and 10% lower (P < 0.05) after 0 and 24 h, respectively, compared with control. The rate of SR Ca 2+ uptake at 800 nM [Ca 2+] free was lower (P < 0.05) after 0 h (2.5 μmol Ca 2+ g prot -1 min -1) than for all other time points (24 h: 5.1 μmol Ca 2+ g prot -1 min -1). However, SR Ca 2+ release rate was not aVected. Plasma myoglobin was sixfold higher (P < 0.05) immediately after the game, but normalised 24 h after the game. Quadriceps muscle soreness (0-10 VASscale) was higher (P < 0.05) after 0 h (3.6), 24 h (1.8), 48 h (1.1) and 72 h (1.4) compared with control (0.1). Muscle glycogen was 57 and 27% lower (P < 0.001) 0 and 24 h after the game compared with control (193 and 328 vs. 449 mmol kg d w -1). In conclusion, maximal voluntary contraction force and SR Ca 2+ uptake were impaired and muscle soreness was elevated after a high-level soccer game, with faster recovery of SR function in comparison with MVC force, soreness and muscle glycogen.

AB - The aim of this study was to examine maximal voluntary knee-extensor contraction force (MVC force), sarcoplasmic reticulum (SR) function and muscle glycogen levels in the days after a high-level soccer game when players ingested an optimised diet. Seven high-level male soccer players had a vastus lateralis muscle biopsy and a blood sample collected in a control situation and at 0, 24, 48 and 72 h after a competitive soccer game. MVC force, SR function, muscle glycogen, muscle soreness and plasma myoglobin were measured. MVC force sustained over 1 s was 11 and 10% lower (P < 0.05) after 0 and 24 h, respectively, compared with control. The rate of SR Ca 2+ uptake at 800 nM [Ca 2+] free was lower (P < 0.05) after 0 h (2.5 μmol Ca 2+ g prot -1 min -1) than for all other time points (24 h: 5.1 μmol Ca 2+ g prot -1 min -1). However, SR Ca 2+ release rate was not aVected. Plasma myoglobin was sixfold higher (P < 0.05) immediately after the game, but normalised 24 h after the game. Quadriceps muscle soreness (0-10 VASscale) was higher (P < 0.05) after 0 h (3.6), 24 h (1.8), 48 h (1.1) and 72 h (1.4) compared with control (0.1). Muscle glycogen was 57 and 27% lower (P < 0.001) 0 and 24 h after the game compared with control (193 and 328 vs. 449 mmol kg d w -1). In conclusion, maximal voluntary contraction force and SR Ca 2+ uptake were impaired and muscle soreness was elevated after a high-level soccer game, with faster recovery of SR function in comparison with MVC force, soreness and muscle glycogen.

U2 - 10.1007/s00421-011-1919-y

DO - 10.1007/s00421-011-1919-y

M3 - Journal article

C2 - 21448723

SN - 1439-6319

VL - 111

SP - 2987

EP - 2995

JO - European Journal of Applied Physiology

JF - European Journal of Applied Physiology

IS - 12

ER -