Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
J Sci Med Sport. 2018 Aug;21(8):789-793. doi: 10.1016/j.jsams.2017.11.017. Epub 2017 Dec 5.
The purpose of this study was to investigate whether preseason isokinetic strength measures were predictive of future HSI among professional football players.
Prospective cohort study, Level of evidence 2.
A total of 169 professional players participated in a preseason isokinetic strength screening, followed by a 10-month competitive season. Testing protocol included the concentric performance of both knee flexion and extension at 60degs and 240degs and the eccentric performance of the knee flexor at 30degs. Strength deficits, bilateral differences, and hamstring to quadriceps strength ratios were computed. Univariate and multivariate logistic regressions were used to identify potential risk factors of HSI. Receiver operating characteristic (ROC) curves were used to investigate the sensitivity and specificity of the strength measures.
Forty-one acute HSIs were sustained, and 12% (n=5) reoccurred within the study period. In the multivariate analysis, we have shown an association between the injury risk and eccentric hamstring peak torque below 2.4Nmkg (OR=5.59; 95% CI, 2.20-12.92); concentric H/Q ratio below 50.5% (OR=3.14; 95% CI, 1.37-2.22); players with previous injury of HSI (OR=3.57; 95% CI, 3.13-8.62). ROC analysis displayed an area under curve (AUC) of 0.77, indicating fair combined sensitivity and specificity of the overall predicting model.
Professional football players with significant lower isokinetic hamstring strength, lower hamstring-to-quadriceps strength ratio, and a previous injury of HSI were linked to an increased risk of acute HSI.
本研究旨在探讨职业足球运动员赛前等速肌力测量值是否可预测未来的高速短跑损伤（high-speed sprint injury，HSI）。
前瞻性队列研究，证据等级 2 级。
共有 169 名职业球员参与了一项赛前等速肌力筛查，随后进行了 10 个月的比赛赛季。测试方案包括 60°和 240°时膝关节屈肌和伸肌的向心收缩性能，以及 30°时膝关节屈肌的离心收缩性能。计算了肌力不足、双侧差异和腘绳肌与股四头肌力量比。使用单变量和多变量逻辑回归来确定 HSI 的潜在风险因素。使用受试者工作特征（receiver operating characteristic，ROC）曲线来研究肌力测量值的敏感性和特异性。
共发生 41 例急性 HSI，其中 12%（n=5）在研究期间再次发生。在多变量分析中，我们发现损伤风险与以下因素相关：离心腘绳肌峰值扭矩低于 2.4Nm/kg（比值比，5.59；95%置信区间，2.20-12.92）；向心 H/Q 比值低于 50.5%（比值比，3.14；95%置信区间，1.37-2.22）；有 HSI 既往损伤史的球员（比值比，3.57；95%置信区间，3.13-8.62）。ROC 分析显示曲线下面积（area under the curve，AUC）为 0.77，表明整体预测模型的敏感性和特异性均为中等。
等速肌力测试中腘绳肌力量显著降低、腘绳肌与股四头肌力量比降低，以及有 HSI 既往损伤史的职业足球运动员，其发生急性 HSI 的风险增加。
