The impact of quadriceps femoris strength asymmetry on functional performance at return to sport following anterior cruciate ligament reconstruction.
The impact of quadriceps femoris strength asymmetry on functional performance at return to sport following anterior cruciate ligament reconstruction.
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DOI：
10.2519/jospt.2012.4194
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发表时间：
2012-09
期刊：
影响因子：
--
通讯作者：
Hewett TE
中科院分区：
文献类型：
--
作者：
Schmitt LC;Paterno MV;Hewett TE
横断面研究。研究恢复运动时股四头肌（QF）肌力不对称对前交叉韧带重建（ACLR）后个体自我报告功能和功能表现的影响。缺乏以证据为基础的QF强度指南，用于返回体育决策。客观的指导方针需要了解QF力量不足的影响时，返回到运动功能和性能。55个人（平均年龄，17.3岁）谁被清除后恢复运动主要ACLR（ACLR组）和35个未受伤的人（平均年龄，17.0岁）在对照组参加了这项研究。评估QF强度（最大自主等长收缩），并计算股四头肌指数（QI）[（参与强度/未参与强度）× 100%]。ACLR组根据QI进一步分为2组：高股四头肌（QI ≥ 90%）和低股四头肌（QI <85%）。使用国际膝关节文献委员会膝关节主观评价表评分评估自我报告的功能，使用跳跃试验评估功能性能。进行多因素方差分析和分层回归分析。与对照组相比，ACLR组的个体更弱，报告功能更差，并且在跳跃测试中表现更差（P<0.05）。与高股四头肌组和对照组相比，低股四头肌组在跳跃测试中表现较差（P≤.016）。高股四头肌组和对照组之间的跳跃测试性能没有差异（P≥.14）。QF强度预测了跳测试的性能，超出了移植物类型、半月板损伤、膝关节疼痛和膝关节症状的存在。在恢复运动时，ACLR后QF较弱（QI低于85%）的个体表现出功能下降，而QF强度缺陷最小（QI为90%或更高）的个体表现出与未受伤个体相似的功能表现。QF强度缺陷预测跳试验性能超出移植物类型，半月板损伤，膝关节疼痛和膝关节症状的影响。
Cross-sectional study. To investigate the impact of quadriceps femoris (QF) muscle strength asymmetry at the time of return to sport on self-reported function and functional performance of individuals following anterior cruciate ligament reconstruction (ACLR). Evidence-based QF strength guidelines for return-to-sport decision making are lacking. Objective guidelines necessitate understanding the impact of QF strength deficits at the time of return to sport on function and performance. Fifty-five individuals (mean age, 17.3 years) who were cleared for return to sport following primary ACLR (ACLR group) and 35 uninjured individuals (mean age, 17.0 years) in a control group participated in the study. QF strength (maximum voluntary isometric contraction) was assessed, and the quadriceps index (QI) was calculated [(involved strength/uninvolved strength) × 100%]. The ACLR group was further subdivided into 2 groups, based on the QI: high quadriceps (QI of 90% or greater) and low quadriceps (QI of less than 85%). The International Knee Documentation Committee Subjective Knee Evaluation Form score was used to assess self-reported function, and hop tests were used to assess functional performance. Multivariate analysis of variance and hierarchical regression analyses were performed. The individuals in the ACLR group were weaker, reported worse function, and performed worse on hop tests compared to those in the control group (P<.05). The low-quadriceps group demonstrated worse performance on the hop tests compared to the high-quadriceps group and the control group (P≤.016). Hop test performance did not differ between the high-quadriceps and control groups (P≥.14). QF strength predicted performance on the hop tests beyond graft type, presence of meniscus injury, knee pain, and knee symptoms. At the time of return to sport, individuals post-ACLR who had weaker QF (QI of less than 85%) demonstrated decreased function, whereas those with minimal QF strength deficits (QI of 90% or greater) demonstrated functional performance similar to uninjured individuals. QF strength deficits predicted hop test performance beyond the influences of graft type, presence of meniscus injury, knee pain, and knee symptoms.
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