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首页> 外文期刊>Journal of human kinetics. >Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players
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Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players

机译：男青年足球运动员足球特定疲劳后受伤风险机制的变化

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The aim of this study was to examine the acute effects of soccer specific fatigue on muscular and neuromuscular function in male youth soccer players. Elite soccer players (n = 20; age 15.7 ± 0.5 y; body height 177.75 ± 6.61 cm; body mass 67.28 ± 8.29 kg) were measured before and after soccer specific exercise (SAFT90). The reactive strength index (RSI) was determined by a drop jump test, leg stiffness (LS) by a 20 sub-maximal two-legged hopping test, and a functional hamstring to quadriceps strength ratio from isokinetic concentric and eccentric strength of the dominant and non-dominant leg (measured at angular velocities of 1.05 rad · s?1 and 3.14 rad · s?1). Metabolic response to the SAFT90 was determined by blood lactate and perceived exertion was assessed by the Borg scale. After simulated match play, a significant decrease in absolute LS (t = 4.411; p 2 = 0.48) and relative LS (t = 4.326; p 2 = 0.49) was observed and the RSI increased significantly (t = 3.806; p = 0.001; ω2 = 0.40). A reduction in LS found after the SAFT90 indicates possible reduction in dynamic knee stabilization. However, if we consider the changes in other observed variables, the present study did not clearly confirm that fatigue induced by a soccer specific protocol increased the risk of ACL and hamstring injury. This may be attributed to the simulated rather than actual match play used in the present study.
机译：这项研究的目的是检查足球特定疲劳对男性青年足球运动员肌肉和神经肌肉功能的急性影响。在足球特定运动之前（SAFT90），测量了优秀的足球运动员（n = 20;年龄15.7±0.5 y;身高177.75±6.61 cm;体重67.28±8.29 kg）。反应强度指数（RSI）通过跌落跳跃试验，腿部刚度（LS）通过20次最大的两腿跳跃试验确定，并且功能性string绳肌与股四头肌的强度比由主要运动者和同等运动者的同心和偏心强度确定非支腿（以1.05 rad·s？1和3.14 rad·s？1的角速度测量）。通过血液乳酸测定对SAFT90的代谢反应，并通过Borg量表评估感觉到的劳累。模拟比赛后，观察到绝对LS（t = 4.411; p 2 = 0.48）和相对LS（t = 4.326; p 2 = 0.49）显着降低，RSI显着提高（t = 3.806; p = 0.001; ω2= 0.40）。 SAFT90之后发现的LS降低表明动态膝关节稳定性可能降低。但是，如果我们考虑其他观察到的变量的变化，则本研究并未明确证实由足球特定规程引起的疲劳会增加ACL和绳肌损伤的风险。这可能归因于本研究中使用的模拟比赛而非实际比赛。

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