Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Department of Sport Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway.
Am J Sports Med. 2018 May;46(6):1481-1491. doi: 10.1177/0363546518756028. Epub 2018 Mar 13.
Lower extremity muscle strength tests are commonly used to screen for injury risk in professional soccer. However, there is limited evidence on the ability of such tests in predicting future injuries.
To examine the association between hip and thigh muscle strength and the risk of lower extremity injuries in professional male soccer players.
Case-control study; Level of evidence, 3.
Professional male soccer players from 14 teams in Qatar underwent a comprehensive strength assessment at the beginning of the 2013/2014 and 2014/2015 seasons. Testing consisted of concentric and eccentric quadriceps and hamstring isokinetic peak torques, eccentric hip adduction and abduction forces, and bilateral isometric adductor force (squeeze test at 45°). Time-loss injuries and exposure in training and matches were registered prospectively by club medical staff throughout each season. Univariate and multivariate Cox regression analyses were used to calculate hazard ratios (HRs) with 95% CIs.
In total, 369 players completed all strength tests and had registered injury and exposure data. Of these, 206 players (55.8%) suffered 538 lower extremity injuries during the 2 seasons; acute muscle injuries were the most frequent. Of the 20 strength measures examined, greater quadriceps concentric peak torque at 300 deg/s (HR, 1.005 [95% CI, 1.00-1.01]; P = .037) was the only strength measure identified as significantly associated with a risk of lower extremity injuries in multivariate analysis. Greater quadriceps concentric peak torque at 60 deg/s (HR, 1.004 [95% CI, 1.00-1.01]; P = .026) was associated with the risk of overuse injuries, and greater bilateral adductor strength adjusted for body weight (HR, 0.75 [95% CI, 0.57-0.97; P = .032) was associated with a lower risk for any knee injury. Receiver operating characteristic curve analyses indicated poor predictive ability of the significant strength variables (area under the curve, 0.45-0.56).
There was a weak association with the risk of lower extremity injuries for 2 strength variables: greater quadriceps concentric muscle strength at (1) high and (2) low speeds. These associations were too small to identify an "at-risk" player. Therefore, strength testing, as performed in the present study, cannot be recommended as a screening test to predict injuries in professional male soccer.
下肢肌肉力量测试常用于筛选职业足球运动员的受伤风险。然而，关于这些测试预测未来受伤风险的能力的证据有限。
研究髋部和大腿肌肉力量与职业男性足球运动员下肢损伤风险的关系。
病例对照研究；证据水平，3。
来自卡塔尔 14 支球队的职业男性足球运动员在 2013/2014 赛季和 2014/2015 赛季初接受了全面的力量评估。测试包括等速向心和离心股四头肌和腘绳肌峰值扭矩、离心髋内收和外展力以及双侧等长内收肌力（45°挤压测试）。俱乐部医务人员在每个赛季前瞻性地记录训练和比赛中的伤停时间损失和暴露情况。使用单变量和多变量 Cox 回归分析计算危险比（HR）及其 95%置信区间（CI）。
共有 369 名球员完成了所有力量测试，并注册了受伤和暴露数据。其中，206 名（55.8%）球员在 2 个赛季中遭受了 538 次下肢损伤；急性肌肉损伤最为常见。在检查的 20 项力量指标中，较高的股四头肌等速向心 300°/s 峰值扭矩（HR，1.005[95%CI，1.00-1.01]；P =.037）是唯一在多变量分析中与下肢损伤风险显著相关的力量指标。较高的股四头肌等速向心 60°/s 峰值扭矩（HR，1.004[95%CI，1.00-1.01]；P =.026）与过度使用损伤风险相关，而双侧内收肌力量经体重校正（HR，0.75[95%CI，0.57-0.97；P =.032）与任何膝关节损伤的风险较低相关。受试者工作特征曲线分析表明，显著的力量变量具有较差的预测能力（曲线下面积，0.45-0.56）。
有 2 个力量变量与下肢损伤风险相关：（1）高速和（2）低速时较大的股四头肌向心肌肉力量。这些关联太小，无法确定“高危”球员。因此，不能推荐在本研究中进行的力量测试作为预测职业男性足球运动员受伤的筛查测试。
