Division of Mathematics and Science, North Carolina Wesleyan College, Rocky Mount, NC, USA.
J Sports Sci. 2010 Feb;28(3):257-66. doi: 10.1080/02640410903440892.
In this study, we examined the relationship between serum creatine kinase activity following exercise-induced muscle damage and muscle fibre composition. Seventeen untrained males volunteered and underwent a .[Vdot]O2max test, Wingate test, and an exercise-induced muscle damage protocol. Muscle soreness and blood samples were recorded before, immediately after, and 24, 48, 72, and 96 h after exercise. Biopsy samples from the vastus lateralis were collected one week after exercise-induced muscle damage and were assessed for muscle fibre composition. There was no significant relationship (P > 0.05) between muscle fibre composition and creatine kinase activity. A significant positive correlation (P < 0.05) was observed between soreness 48 h after exercise and type II and IIb fibres, and a significant negative correlation (P < 0.05) was observed between soreness 48 h after exercise and type I muscle fibres. Significant positive correlations were observed between soreness 48 h after exercise and the fatigue index, relative average power, and relative anaerobic capacity. Our results suggest that creatine kinase activity following exercise-induced muscle damage may not be related to muscle fibre proportions, and higher post-exercise muscular pain may be related to a predominance of type II muscle fibres and higher anaerobic capabilities.
在这项研究中，我们研究了运动引起的肌肉损伤后血清肌酸激酶活性与肌纤维组成之间的关系。17 名未经训练的男性志愿者参加了一项.[Vdot]O2max 测试、Wingate 测试和运动引起的肌肉损伤方案。在运动前、运动后即刻以及运动后 24、48、72 和 96 小时记录肌肉酸痛和血液样本。在运动引起的肌肉损伤后一周采集股外侧肌活检样本，并评估肌纤维组成。肌纤维组成与肌酸激酶活性之间没有显著的相关性（P>0.05）。运动后 48 小时的酸痛与 II 型和 IIb 型纤维之间存在显著的正相关（P<0.05），运动后 48 小时的酸痛与 I 型肌肉纤维之间存在显著的负相关（P<0.05）。运动后 48 小时的酸痛与疲劳指数、相对平均功率和相对无氧能力之间存在显著的正相关。我们的结果表明，运动引起的肌肉损伤后肌酸激酶活性可能与肌纤维比例无关，较高的运动后肌肉疼痛可能与 II 型肌纤维的优势和较高的无氧能力有关。
