McClean Zachary J, Mossel Nathan Boon-van, McKenzie Mark, Aagaard Per, Herzog Walter, Pasanen Kati, Lun Victor, Jordan Matthew J
Faculty of Kinesiology, University of Calgary, Calgary, Canada.
Integrative Neuromuscular Sport Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada.
Transl Sports Med. 2024 Oct 23;2024:5589056. doi: 10.1155/2024/5589056. eCollection 2024.
Muscle strength asymmetry and athlete introspective measures are associated with musculoskeletal (MSK) sport injury and reinjury. However, the interrelationship between mechanical and subjective measures of concentric and eccentric limb function needs further exploration. This includes investigating if an athlete's perception of their overall MSK function influences limb asymmetry across different testing modalities. To (i) explore the interrelationship between mechanical and subjective measures of lower limb function in university athletes and (ii) compare the consistency in interlimb strength asymmetries across different strength tests in groups of athletes with good, fair, and poor perceived limb function. University athletes ( = 175; = 87 females) from six sports completed four tests of muscle strength, power, and plyometric function along with an assessment of perceived limb function using the Sport Fitness Index (SFI). Participants were categorized into high (GOOD), fair (FAIR), and poor (POOR) perceived overall MSK function (perceived function) groups. Strength asymmetry indexes evaluated interlimb differences in concentric and eccentric maximal strength, countermovement jump (CMJ) impulse, unilateral CMJ height, and reactive strength index in unilateral repeat hop testing. Cumulative link mixed-effects models assessed the relationship between strength asymmetries and perceived limb function. The POOR group showed increased asymmetry in concentric strength testing ( = 0.022), more consistent interlimb asymmetries ( < 0.001), and reduced overall muscle strength compared to the GOOD group. Higher interlimb asymmetry in maximal concentric strength measures along with reduced muscle strength was found in the POOR group compared to the GOOD group. The POOR group also showed greater consistency in muscle strength asymmetry derived across different tasks.
肌肉力量不对称与运动员的内省测量结果与肌肉骨骼（MSK）运动损伤和再损伤有关。然而，向心和离心肢体功能的力学测量与主观测量之间的相互关系需要进一步探索。这包括研究运动员对其整体MSK功能的感知是否会影响不同测试方式下的肢体不对称性。目的是：（i）探索大学生运动员下肢功能的力学测量与主观测量之间的相互关系；（ii）比较肢体功能感知良好、一般和较差的运动员群体在不同力量测试中肢体力量不对称性的一致性。来自六个运动项目的大学生运动员（n = 175；87名女性）完成了四项肌肉力量、功率和增强式功能测试，以及使用运动健身指数（SFI）对肢体功能感知的评估。参与者被分为整体MSK功能感知高（良好）、一般（中等）和低（较差）（感知功能）组。力量不对称指数评估了向心和离心最大力量、反向纵跳（CMJ）冲量、单侧CMJ高度以及单侧重复单脚跳测试中的反应力量指数的肢体间差异。累积链接混合效应模型评估了力量不对称与肢体功能感知之间的关系。与良好组相比，较差组在向心力量测试中不对称性增加（P = 0.022），肢体间不对称性更一致（P < 0.001），且整体肌肉力量降低。与良好组相比，较差组在最大向心力量测量中肢体间不对称性更高，且肌肉力量降低。较差组在不同任务中得出的肌肉力量不对称性也表现出更大的一致性。
