Medical Services, Athletic Club, Lezama, Spain.
Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.
Sci Med Footb. 2024 Nov;8(4):427-437. doi: 10.1080/24733938.2024.2329273. Epub 2024 Mar 18.
There is a paucity of literature analyzing the impact of fatigue from actual competitive soccer match-play on measures of neuromuscular function and muscle damage markers in youth players. Aims The main purpose was to analyze the acute pre- and post-competitive soccer match-play changes in measures of landing mechanics, stretch-shortening cycle capability, physical performance, muscle damage, and match intensity. A secondary purpose was to explore whether the players' maturity status and chronological age were associated with post-soccer match-play responses. Methods Thirty-two male youth outfield soccer players from two chronological competition age groups (U14 and U16) were assessed pre-and post-competitive soccer match-play for 2D dynamic knee valgus at landing (DKV), leg stiffness, reactive strength index, 20 m sprint time, CMJ-Abalakov jump height, creatine kinase and urea activity and visual analogue scale for muscle soreness (VAS). Players' maturity status was also estimated using a previously validated regression equation. Results There were statistically significant (p < 0.05) post-competitive soccer match-play impairments in all measures of stretch-shortening cycle capability and muscle damage markers assessed irrespective of the age group. Likewise, significant post-match play alterations in landing mechanics (DKV of the dominant leg) and physical performance (sprint time and jump height) scores were documented for the U14 players. Significant interactions between maturity and landing mechanics and VAS responses to competitive soccer match-play were also found whereby more mature players demonstrated larger post-match changes. Conclusion The findings of this study suggest the existence of a negative influence of competitive match-play on neuromuscular function and muscle damage in youth soccer.
关于疲劳对青少年足球运动员神经肌肉功能和肌肉损伤标志物影响的研究文献较少。目的是分析青少年足球运动员在实际比赛前后的落地力学、伸展-缩短周期能力、身体表现、肌肉损伤和比赛强度的变化。次要目的是探讨运动员的成熟度状况和年龄是否与赛后比赛反应有关。方法：32 名来自两个年龄组（U14 和 U16）的男性青年外场足球运动员在比赛前后进行了 2D 动态膝关节过度伸展（DKV）、腿部刚度、反应强度指数、20 米冲刺时间、CMJ-Abalakov 跳跃高度、肌酸激酶和尿素活性以及肌肉酸痛视觉模拟量表（VAS）的评估。运动员的成熟度状况也使用经过验证的回归方程进行了评估。结果：无论年龄组如何，所有伸展-缩短周期能力和肌肉损伤标志物的评估都显示出明显的（p<0.05）赛后足球比赛受损。同样，U14 球员的落地力学（主导腿 DKV）和身体表现（冲刺时间和跳跃高度）评分也显示出显著的赛后变化。在成熟度和落地力学以及对竞技足球比赛的 VAS 反应之间也发现了显著的相互作用，其中更成熟的运动员表现出更大的赛后变化。结论：本研究结果表明，竞技比赛对青少年足球运动员的神经肌肉功能和肌肉损伤有负面影响。
