Optimum Performance Therapy, Fort Wayne, IN, USA.
Fort Wayne Orthopedics, Fort Wayne, IN, USA.
J Electromyogr Kinesiol. 2023 Oct;72:102809. doi: 10.1016/j.jelekin.2023.102809. Epub 2023 Aug 2.
The primary objective of this study was to examine the degree of inter-limb asymmetry in impact force magnitudes and rates during the first and second landings of a drop vertical jump in adolescent athletes with a history of anterior cruciate ligament (ACL) reconstruction. We also compared the degree of asymmetry exhibited by the athletes who had undergone ACL reconstruction to a group of uninjured athletes. This study included 14 athletes who had undergone ACL reconstruction and 28 uninjured athletes, matched for age, sex, and sport. All athletes completed a double-leg drop vertical jump task. Peak vertical ground reaction forces (vGRFs) and loading rates were examined for both limbs during the first and second landings of the drop vertical jump. For the athletes who had undergone ACL reconstruction, peak vGRFs were 11.9% greater for the uninvolved limb vs. the involved limb during the first landing; however, peak vGRFs were only 2.4% greater for the uninvolved limb (vs. the involved limb) during the second landing. The athletes who had undergone ACL reconstruction exhibited greater asymmetry in peak vGRFs for the first landing compared to the uninjured athletes; however, there was no difference between the groups (ACL reconstruction, uninjured) for the second landing.
本研究的主要目的是探讨有前交叉韧带（ACL）重建史的青少年运动员在单次垂直跳下落落地的首次和第二次着时，冲击力大小和速率的肢体间不对称程度。我们还比较了 ACL 重建运动员与未受伤运动员之间表现出的不对称程度。本研究包括 14 名 ACL 重建运动员和 28 名未受伤运动员，他们在年龄、性别和运动项目上相匹配。所有运动员都完成了双腿垂直跳下落任务。在垂直跳下落的首次和第二次着时，检查了双侧肢体的最大垂直地面反作用力（vGRF）和加载率。对于 ACL 重建运动员，在首次着时，未受累肢体的最大 vGRF 比受累肢体高 11.9%；然而，在第二次着时，未受累肢体的最大 vGRF 仅比受累肢体高 2.4%。与未受伤运动员相比，ACL 重建运动员在首次着时的最大 vGRF 表现出更大的不对称性；然而，两组之间（ACL 重建组，未受伤组）在第二次着时没有差异。
