This study aimed to investigate the effect of official soccer matches on selected markers of muscle damage in U-21 soccer players. A group of 19 trained, healthy male soccer players from the junior category took part in this study. Blood samples were assessed pre-match and immediately after a match in response to a competitive (2×45 min) soccer match. Analysis was performed for muscle damage and inflammatory markers. Significant differences between two measures (before and after soccer match) exist in Aspartate-aminotransferase (AST), Lactate dehydrogenase (LDH), and Myoglobin. Plasma K+ significantly decreased after the match (p<0.05), whereas plasma Na+ decreased slightly. This study showed that most selected markers of muscle damage were influenced by a soccer match. However, results remain inconsistent because of the influence of the type, duration, and intensity of exercise. Moreover, some markers show great variability among individuals.

中文翻译：

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U-21足球运动员肌肉损伤标记的赛后变化

这项研究旨在调查正式足球比赛对U-21足球运动员肌肉损伤所选标志物的影响。一组19名来自初级组的受过训练的健康男性足球运动员参加了这项研究。比赛前和比赛后立即对血样进行评估，以应对竞争性足球比赛（2×45分钟）。分析肌肉损伤和炎性标志物。天冬氨酸转氨酶（AST），乳酸脱氢酶（LDH）和肌红蛋白这两种测量方法（足球比赛之前和之后）之间存在显着差异。比赛后血浆K +明显降低（p <0.05），而血浆Na +则略有下降。这项研究表明，大多数选定的肌肉损伤标志物都受到足球比赛的影响。但是，由于类型的影响，结果仍然不一致，持续时间和运动强度。此外，某些标记在个体之间显示出很大的变异性。