Jankaew Amornthep, Lin Cheng-Feng
College of Medicine, Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan (ROC).
College of Medicine, Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan (ROC) -
J Sports Med Phys Fitness. 2025 Feb;65(2):238-246. doi: 10.23736/S0022-4707.24.16148-8. Epub 2024 Oct 9.
Hamstring strains may alter the contractile properties of the muscle and affect functional movement. Thus, this study evaluated the association between the hamstring properties and the jump-landing performance in athletes with hamstring strains.
Sixteen hamstring-injured athletes and 16 healthy controls were recruited. The mechanical properties and contractile function of the hamstring were assessed in both the injured and non-injured legs. The control group was tested only in the matched injured leg. The kinetic outcomes during squat jump (SJ) and countermovement jump (CMJ) tasks were analyzed to evaluate the jump-landing performance.
The injured limb exhibited higher muscle tone (P=0.042) and stiffness (P=0.010), but lower flexibility (P=0.002) and strength (P=0.040) than the control limb. The injured limb showed a poorer jumping performance (P=0.037 for jump height) and landing performance (P=0.011 for landing force and P=0.004 for loading rate) during the CMJ task compared to the control limb. All the hamstring properties showed mild-to-moderate correlations with the jump-landing performance.
Impairments in the muscle properties following hamstring strain impact the jumping and landing performance, leading to degraded sports outcomes in athletes with hamstring injuries. Thus, more attention should be paid to tissue property changes following hamstring strain injuries to develop effective strategies for restoring muscle function and improving sports performance.
腘绳肌拉伤可能会改变肌肉的收缩特性并影响功能运动。因此，本研究评估了腘绳肌拉伤运动员的腘绳肌特性与跳落性能之间的关联。
招募了16名腘绳肌受伤的运动员和16名健康对照者。对受伤和未受伤的腿部均评估了腘绳肌的力学特性和收缩功能。对照组仅在匹配的受伤腿部进行测试。分析了深蹲跳（SJ）和反向运动跳（CMJ）任务期间的动力学结果，以评估跳落性能。
与对照肢体相比，受伤肢体表现出更高的肌张力（P = 0.042）和刚度（P = 0.010），但柔韧性（P = 0.002）和力量（P = 0.040）较低。与对照肢体相比，受伤肢体在CMJ任务期间表现出较差的跳跃性能（跳跃高度P = 0.037）和着陆性能（着陆力P = 0.011，加载率P = 0.004）。所有腘绳肌特性与跳落性能均呈轻度至中度相关。
腘绳肌拉伤后肌肉特性的损伤会影响跳跃和着陆性能，导致腘绳肌受伤的运动员运动成绩下降。因此，应更多关注腘绳肌拉伤后的组织特性变化，以制定恢复肌肉功能和提高运动成绩的有效策略。
