Core Strength and Side-Hop Interlimb Asymmetries Are Associated with Subsequent Traumatic Knee Injury in Female Football Players.
简介
104名16–26岁瑞典精英女子足球运动员前瞻性队列研究，基线测试肌力与功能表现后随访1年，21人发生创伤性膝伤（含ACL、半月板、侧副韧带、软骨及骨折）。伤者基线股四头肌力量、核心侧屈力量、侧跳表现及H:Q比值的肢体间不对称性显著大于未伤者，多变量模型中仅核心侧屈力量不对称（OR=1.068）和侧跳不对称（OR=1.061）与后续膝伤独立相关。结果为探索性…
英文摘要
The aim of this prospective cohort study was to examine the associations between muscle strength and functional interlimb asymmetries and the subsequent occurrence of traumatic knee injuries in female football players. A secondary aim was to evaluate the ability of asymmetry measures to discriminate between injured and non-injured athletes. A total of 104 female football players aged 16-26 years, representing elite-level clubs competing in the Swedish Elitettan and football academies, participated in this prospective cohort study. Baseline assessments included tests of muscle strength and functional performance, followed by a one-year prospective monitoring period with systematic registration of traumatic knee injuries (ACL, meniscal, collateral ligament, cartilage, and fracture injuries) and sport exposure. During follow-up, 21 players sustained a traumatic knee injury. Injured players demonstrated significantly greater interlimb asymmetry in quadriceps strength, core lateral flexor strength, side-hop performance, and hamstring-to-quadriceps (H:Q) ratio at baseline than non-injured players (all p ≤ 0.024). No significant differences were found for hamstring strength, hip external rotation strength, or single-leg hop for distance asymmetry. Core lateral flexor strength asymmetry (OR = 1.068, 95% CI: 1.013-1.126, p = 0.015) and side-hop asymmetry (OR = 1.061, 95% CI: 1.014-1.111, p = 0.011) remained statistically associated with subsequent traumatic knee injury in the exploratory multivariable model. Core lateral flexor strength asymmetry demonstrated acceptable discrimination (AUC = 0.756, 95% CI: 0.653-0.860), whereas side-hop asymmetry demonstrated modest discrimination (AUC = 0.652, 95% CI: 0.498-0.806). Exploratory sample-derived threshold values were 9.6% for core lateral flexor asymmetry and 29.9% for side-hop asymmetry. In conclusion, female football players who sustained a traumatic knee injury exhibited greater baseline interlimb asymmetries than uninjured players, particularly in quadriceps strength, core lateral flexor strength, side-hop performance, and H:Q ratio. However, only core lateral flexor strength asymmetry and side-hop asymmetry remained statistically associated in the exploratory multivariable model. These findings should be considered exploratory and require validation in larger independent cohorts.