Running Biomechanics and Lower Limb Strength Associated with Prior Hamstring Injury
Running Biomechanics and Lower Limb Strength Associated with Prior Hamstring Injury
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DOI：
10.1249/mss.0b013e3181a55200
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发表时间：
2009-10-01
期刊：
影响因子：
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通讯作者：
Lloyd, David G.
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文献类型：
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作者：
Lee, Marcus J. C.;Reid, Siobhan L.;Lloyd, David G.
LEE、M. J. C. S. L. REID、B. C. Elliott 和 D. G. LLOYD。与既往腿筋损伤相关的跑步生物力学和下肢力量，医学。科学。体育锻炼，卷。 41，第 10 期，第 1942-1951 页，2009 年。目的：腿筋损伤/再损伤很常见，但其功能原因仍不清楚。这项研究确定了参与短跑运动的男性运动员先前腿筋受伤和未受伤的四肢在摆动期跑步生物力学和等速力量方面的双边差异。方法：测试期间未受伤的运动员接受三维运动分析，以确定次最大冲刺期间的双侧关节运动学和动力学。使用 Biodex 测力计进行双侧各种髋部和膝部等速力量测试。从同心腘绳肌 (CH)、同心股四头肌 (CQ)、同心髋屈肌 (CHF) 和偏心腘绳肌 (EH) 等速收集峰值扭矩 (PT) 和总功 (TW；标准化为体重)。创建了三个 PT 和 TW 比率，即 CH/CQ、EH/CQ 和 EH/CHF。并对先前受伤和未受伤的肢体进行比较。结果：下肢摆动期运动学和动力学相似。在先前受伤的肢体中，仅后期摆动时的峰值髋部屈曲角度显着减小（1.9 度）。 EH PT 降低（26.2 N.m.kg(-1)），并且发生在先前受伤侧的腿筋长度较短的情况下，而 CQ TW 增加了 13.6 J.kg(-1)。先前受伤肢体的 PT 和 TW 的 EH/CQ 和 EH/CHF 比率降低。结论：尽管次最大冲刺的摆动期生物力学在四肢之间相似，但先前受伤的腿筋确实表现出明显的偏心无力。与未受伤的肢体相比，残余的偏心无力可能会使该肌肉群在挥杆后期容易再次受伤，因为两肢的功能性偏心需求相似。此外，EH/CHF 比率可以更好地反映短跑期间的肌肉功能，有可能影响康复以防止再次受伤。
LEE, M. J. C. S. L. REID, B. C. ELLIOTT, and D. G. LLOYD. Running Biomechanics and Lower Limb Strength Associated with Prior Hamstring Injury, Med. Sci. Sports Exerc., Vol. 41, No. 10, pp. 1942-1951, 2009. Purpose: Hamstrings injury/reinjury is common, but functional reasons for this remain unclear. This Study identified bilateral differences in swing phase running biomechanics and isokinetic strength, between the previously hamstring-injured and Uninjured limbs, of male athletes involved in sprint-based sports. Methods: Athletes, injury-free during testing, underwent three-dimensional motion analyses to determine bilateral joint kinematics and kinetics during submaximal sprinting. Various hip and knee isokinetic strength tests were performed bilaterally using a Biodex dynamometer. Peak torque (PT) and total work (TW; normalized to body mass) were collected isokinetically from concentric hamstrings (CH), concentric quadriceps (CQ), concentric hip flexors (CHF), and eccentric hamstrings (EH). Three PT and TW ratios were created, namely, CH/CQ, EH/CQ, and EH/CHF. and were compared between the previously injured and uninjured limbs. Results: Lower limb swing phase kinematics and kinetics were similar. Only peak hip flexion angle in late swing was significantly reduced (1.9 degrees) in the previously injured limb. EH PT was decreased (26.2 N.m.kg(-1)) and occurred at shorter hamstring lengths on the previously injured side, whereas CQ TW was increased by 13.6 J.kg(-1). EH/CQ and EH/CHF ratios for PT and TW were reduced on the previously injured limbs. Conclusions: Although swing phase biomechanics of submaximal sprinting were similar between limbs, the previously injured hamstrings did display significant weakness eccentrically. Residual eccentric weakness may predispose this muscle group to reinjury during late swing, compared with the Uninjured limb, because the functional eccentric demand on both limbs was similar. Furthermore, the EH/CHF ratios may better reflect muscle function during sprinting, having the potential to influence rehabilitation to prevent reinjury.