Gokeler A, Eppinga P, Dijkstra P U, Welling W, Padua D A, Otten E, Benjaminse A
University of Groningen, University Medical Center Groningen. Center for Human Movement Sciences. Groningen, The Netherlands.
FLYTTA Sports Physical Therapy. Groningen, The Netherlands.
Int J Sports Phys Ther. 2014 May;9(3):302-11.
Fatigue has been shown to affect performance of hop tests in patients after anterior cruciate ligament reconstruction (ACLR) compared to uninjured controls (CTRL). This may render the hop test less sensitive in detecting landing errors. The primary purpose of this study was to investigate the effect of lower extremity fatigue on landing performance assessed with the Landing Error Scoring System (LESS) in patients after ACLR compared to a CTRL group. It is plausible that fatigue would have an effect on confidence and risk appraisal in the ACLR group. The secondary purpose was to determine the relationship between psychological responses and LESS scores after fatigue.
Twelve patients following ACLR (6 males, 6 females) who were tested at 10 ± 2.4 months after surgery participated in the current study and were compared to 10 subjects in the control group (5 males, 5 females). Subjects performed a jump-landing task and the landing was assessed using the Landing Error Scoring System (LESS) both before and after fatigue. Digital video camcorders recorded frontal and sagittal plane views of the subject performing the task. The LESS was scored using video replay. Psychological responses in the ACLR group were assessed with the ACL-RSI questionnaire.
Patients after ACLR had a median LESS of 6.5 which reflects a poor result (LESS >6) in the pre-fatigue condition compared to controls who had a LESS of 2.5 which is considered excellent (≤4). In the post-fatigue condition, median LESS in patients after ACLR increased to 7.0 whereas in the control group the LESS increased to 6.0 both of which reflect a poor result. The median increase in LESS was larger in the control (2.0) group compared to patients after ACLR (1.0) but the difference was not significant (p=0.165).
Patients after ACLR have higher LESS scores at baseline compared to a control group. Fatigue resulted in an increase in scores on the LESS in both groups.
3b.
与未受伤的对照组（CTRL）相比，疲劳已被证明会影响前交叉韧带重建（ACLR）术后患者的单腿跳测试表现。这可能会使单腿跳测试在检测着陆错误方面的敏感性降低。本研究的主要目的是调查与对照组相比，下肢疲劳对ACLR术后患者使用着陆误差评分系统（LESS）评估的着陆表现的影响。疲劳会对ACLR组的信心和风险评估产生影响是合理的。次要目的是确定疲劳后心理反应与LESS评分之间的关系。
12名ACLR术后患者（6名男性，6名女性）在术后10±2.4个月接受测试，参与本研究，并与对照组的10名受试者（5名男性，5名女性）进行比较。受试者执行跳跃着陆任务，在疲劳前后均使用着陆误差评分系统（LESS）评估着陆情况。数码摄像机记录了受试者执行任务的额面和矢状面视图。使用视频回放对LESS进行评分。使用ACL-RSI问卷评估ACLR组的心理反应。
ACLR术后患者的LESS中位数为6.5，这反映出在疲劳前状态下结果较差（LESS>6），而对照组的LESS为2.5，被认为是优秀（≤4）。在疲劳后状态下，ACLR术后患者的LESS中位数增加到7.0，而对照组的LESS增加到6.0，两者均反映出结果较差。对照组（2.0）的LESS中位数增加幅度大于ACLR术后患者（1.0），但差异不显著（p=0.165）。
与对照组相比，ACLR术后患者在基线时的LESS评分更高。疲劳导致两组的LESS评分均增加。
3b。
