Laudner Kevin, Evans Daniel, Wong Regan, Allen Aaron, Kirsch Tom, Long Brian, Meister Keith
Illinois State University, Normal, IL, USA.
Texas Metroplex Institute for Sports Medicine and Orthopedics, Arlington, TX, USA.
Int J Sports Phys Ther. 2015 Jun;10(3):272-80.
Clinicians are often challenged when making return-to-play decisions following anterior cruciate ligament reconstruction (ACL-R). Isokinetic strength and jump performance testing are common tools used to make this decision. Unfortunately, vertical jump performance standards have not been clearly established and many clinicians do not have access to isokinetic testing equipment.
To establish normative jump and strength characteristics in ACL-R patients cleared by an orthopedic physician to return-to-play and to determine if relationships exist between knee isokinetic strength measurements and jump characteristics described using an electronic jump map system.
Descriptive laboratory study.
Thirty-three ACL-R patients who had been cleared to return to athletic competition participated in this study. Twenty-six of these ACL-R participants were also matched to 26 asymptomatic athletes based on sex, limb, height, and mass to determine isokinetic strength and jump characteristic differences between groups. Jump tests consisted of single leg vertical, double leg vertical, and a 4-jump single leg vertical jump assessed using an electronic jump mat system. Independent t-tests were used to determine differences between groups and multiple regression analyses were used to identify any relationships between jump performance and knee strength (p<0.05).
The ACL-R group had lower vertical jump capabilities and some bilateral knee strength deficiencies compared to the matched control group. The ACL-R group also showed several moderate-to-strong positive relationships for both knee extension and flexion strength with several jump performance characteristics, such as single and double leg vertical jump height.
The current results indicate that ACL-R patients present with several knee strength and vertical jump differences compared to a matched control group at the time of return-to-play. Also, ACL-R patient's performance on an electronic jump mat system is strongly related to isokinetic knee strength measures.
2b.
在前交叉韧带重建（ACL - R）后做出重返运动的决策时，临床医生常常面临挑战。等速肌力测试和跳跃性能测试是用于做出该决策的常用工具。不幸的是，垂直跳跃性能标准尚未明确确立，而且许多临床医生无法使用等速测试设备。
确定经骨科医生批准可重返运动的ACL - R患者的标准跳跃和力量特征，并确定膝关节等速肌力测量值与使用电子跳跃地图系统描述的跳跃特征之间是否存在关联。
描述性实验室研究。
33名已获批准可重返体育比赛的ACL - R患者参与了本研究。其中26名ACL - R参与者还根据性别、肢体、身高和体重与26名无症状运动员进行匹配，以确定两组之间的等速肌力和跳跃特征差异。跳跃测试包括单腿垂直跳、双腿垂直跳以及使用电子跳跃垫系统评估的4次单腿垂直连跳。采用独立t检验确定组间差异，并使用多元回归分析确定跳跃性能与膝关节力量之间的任何关联（p<0.05）。
与匹配的对照组相比，ACL - R组的垂直跳跃能力较低，且存在一些双侧膝关节力量缺陷。ACL - R组在膝关节伸展和屈曲力量与几个跳跃性能特征（如单腿和双腿垂直跳高度）之间也显示出若干中度至强的正相关关系。
目前的结果表明，与匹配的对照组相比，ACL - R患者在重返运动时存在若干膝关节力量和垂直跳跃差异。此外，ACL - R患者在电子跳跃垫系统上的表现与膝关节等速肌力测量值密切相关。
2b。
