What is the Influence of Visual-motor Reliance on Planned and Unplanned Change of Direction Biomechanics 7 Months Post Anterior Cruciate Ligament Reconstruction?
The majority of anterior cruciate ligament (ACL) injuries occur during non-contact mechanisms.This suggests that an individual's movement technique is a significant factor in the cause of the injury. Hence, ACL injuries are increasingly being framed as an error in motor planning and execution.
Rehab following an ACL reconstruction (ACLR) commonly follows a pathway of: regaining ROM, strength development, power development, running, return to training and then return to competition. However, several studies utilising functional brain MRI and electroencephalogram have demonstrated dysfunction within the somatosensory and visual systems in the ACLR population even after the completion of rehabilitation. This has been suggested to indicate that the ACLR population becomes reliant on their visual system during motor planning and execution, potentially increasing the risk of reinjury.
研究概览
地位
条件
详细说明
It has been demonstrated in studies utilising functional brain MRI and EEG that following ACLR, individuals have increased activation of the visual system during simple motor tasks as compared to healthy controls. This is suggested to represent an increased reliance on the visual system during motor planning and execution. Increased reliance on the visual system may negatively affect an individual's ability to respond to sporting situations which are often chaotic in nature, resulting in an inappropriate movement technique being employed. This may then result in an increased risk of reinjury. However, no study to date has been able to assess how visual reliance affects change of direction biomechanics.
The study will recruit individuals who are 7 months post-ACLR and intend on returning to multi-directional field sport. Individuals will complete a stepping down task (eyes open versus eyes closed) to identify participants who are reliant on their visual system. Participants will then complete a 90 deg change of direction task in a planned and then unplanned condition. Those who are visually reliant will be compared to those who are aren't with regards to their unplanned change of direction biomechanics and also the change in their biomechanics from a planned to unplanned condition.
研究类型
注册 (预期的)
联系人和位置
学习地点
-
-
Leinster
-
Dublin、Leinster、爱尔兰
- 招聘中
- Sports Surgery Clinic
-
-
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
取样方法
研究人群
描述
Inclusion Criteria:
- Aged 18-35 years old
- Playing club level Gaelic football or hurling
- They must report that they intend on returning to sport at the same or higher level
- Able to give written informed consent and to participate fully in the interventions
- At 7 months biomechanical testing, individuals would need to have 70% symmetry of both quadriceps and hamstring peak torque as measured on our isokinetic dynamometer with the angular velocity set to 60°/s
- Individuals should have already commenced linear running and double leg jumping tasks as part of their rehabilitation
- They are currently attending a gym or can attain gym access for the duration of intervention period
Exclusion Criteria:
- They have not commenced running or jumping in their rehabilitation
- Revision ACL
- They underwent concurrent meniscal repair, chondral repair or extra-articular augmentation
- Serious medical conditions preventing them from completing high intensity resistance exercise
- Any previous: injuries to the visual system, concussion, head injury, unexplained seizures or epilepsy
- Any previous ankle or knee injuries
- Those who are uncomfortable or do not want to hop with their eyes closed (one of the assessment tasks will involve hopping on one leg with their eyes open and followed by another set in which their eyes are closed
学习计划
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
|---|
|
ACLR group
ACLR participants would be 7 months post surgery
|
|
healthy control group
Healthy uninjured participants who are actively engaged in gaelic football or hurling.
|
研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
降压任务期间的稳定时间（睁眼与闭眼）
大体时间：ACLR 术后 7 个月
|
参与者将从 20 厘米的箱子上下来，单腿着地。
建议参与者尽快达到稳定状态，然后保持该姿势 20 秒。
参与者将首先睁开眼睛在每条腿上完成 3 次试验，然后在蒙住眼睛的情况下在每条腿上再完成 3 次试验。
参与者将在 3D 实验室中使用八摄像头运动分析系统（200Hz：Bonita-B10，Vicon，英国）执行此测试
|
ACLR 术后 7 个月
|
|
change of direction biomechanics- planned versus unplanned
大体时间：at 7 months post-ACLR
|
Participants will perform 90 degree cut within a 3D lab utilising using an eight-camera motion analysis system (200Hz: Bonita-B10, Vicon, UK) and integrated force plates (1000Hz BP400600, AMTI, USA).
Timing gates (Smartspeed, Fusion Sport) will be used to time the change of direction and also provide the participant a visual stimulus as to which direction they need to cut to.
The lights will be on during planned change of direction and 3 trials will be taken for each direction.
During the unplanned change of direction, the target timing gates (right or left) will only switch on 2 metres prior to the participants approaching the force plates.
3 trials will be taken in the unplanned condition
|
at 7 months post-ACLR
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
股四头肌和腘绳肌力量
大体时间：ACLR 术后 7 个月
|
在每条腿上以 60 度/秒的速度在 0-100 度之间进行等速测力法。
每条腿完成 3 组，每组 5 次
|
ACLR 术后 7 个月
|
|
跳高-双腿和单腿
大体时间：ACLR 术后 7 个月
|
参与者将下降 30 厘米步（双腿）和 15 厘米步（单腿），并被指示快速跳离地面并尽可能高。
每个将进行 3 次试验
|
ACLR 术后 7 个月
|
|
前交叉韧带伤后恢复运动 (ACL-RSI) 问卷
大体时间：ACLR 术后 7 个月
|
问卷用于评估参与者重返运动的准备情况，并确定是否有任何潜在的心理因素影响他们重返运动。 最低分数为 0%，最高分数为 100%。 分数越低表示对重返运动的恐惧越小 |
ACLR 术后 7 个月
|
|
国际膝关节文献委员会 (IKDC) 调查问卷
大体时间：ACLR 术后 7 个月
|
用于评估参与者自我报告功能的问卷。
最低分 0 分，最高分 100 分。
分数越高表示功能水平越高
|
ACLR 术后 7 个月
|
|
坦帕运动恐惧症量表
大体时间：ACLR 术后 7 个月
|
问卷用于评估参与者对运动或再次受伤的恐惧。
最低分 17 分，最高分 68 分。
较低的分数表示更好的结果或减少的运动恐惧症
|
ACLR 术后 7 个月
|
|
近远速度得分（作为视觉处理软件的一部分）
大体时间：ACLR 术后 7 个月
|
感官平板电脑（Senaptec，美国），带有预加载的评估任务，可跨多个视觉处理领域，包括近远速度任务。
该任务要求参与者在 3 米外的屏幕上正确回答一项任务。
输入正确答案后，任务会出现在距离参与者 70-100 厘米的设备上。
然后，任务将在 30 秒内继续在 2 个屏幕之间移动，并计算正确响应的数量和输入响应所需的时间。
报告超过 30 秒测试期间的正确响应数量，分数越高表示功能越好
|
ACLR 术后 7 个月
|
|
对目标的近远反应速度（作为视觉处理软件的一部分）
大体时间：ACLR 术后 7 个月
|
感官平板电脑（Senaptec，美国），带有预加载的评估任务，可跨多个视觉处理领域，包括近远速度任务。
该任务要求参与者在 3 米外的屏幕上正确回答一项任务。
输入正确答案后，任务会出现在距离参与者 70-100 厘米的设备上。
然后，任务将在 30 秒内继续在 2 个屏幕之间移动，并计算正确响应的数量和输入响应所需的时间。
计算个人对远目标和近目标输入正确响应的平均响应时间。
较低的值表示更快的反应时间，因此更好的功能。
|
ACLR 术后 7 个月
|
|
知觉跨度（作为视觉处理软件的一部分）
大体时间：ACLR 术后 7 个月
|
感官平板电脑（Senaptec，美国），预加载评估任务以跨越多个视觉处理领域，包括感知跨度任务。
该任务涉及在闪烁 1 秒的模式后回忆哪些圆圈被填充。
总分由软件计算得出，分数越高表示功能越好
|
ACLR 术后 7 个月
|
|
多目标跟踪得分（作为视觉处理软件的一部分）
大体时间：ACLR 术后 7 个月
|
感官平板电脑（Senaptec，美国），预加载评估任务以跨越多个视觉处理领域，包括多个对象跟踪任务。
在任务中，一组圆圈突出显示给参与者。
然后这些圆圈与其他圆圈一起围绕屏幕旋转，然后停止。
然后参与者的任务是正确识别最初突出显示的圆圈。该软件提供比例和综合分数。
分数越高表示功能越好
|
ACLR 术后 7 个月
|
|
反应时间（作为视觉处理软件的一部分）
大体时间：ACLR 术后 7 个月
|
感官平板电脑（Senaptec，美国），预加载评估任务以跨越多个视觉处理领域，包括反应时间任务。
在任务中，参与者将两个食指放在屏幕上，闪烁的红色图像表示哪根手指需要从屏幕上移开。
建议参与者尽快将手指从屏幕上移开。
软件为每一侧（惯用手和非惯用手）提供反应时间，并作为两侧之间的平均值。
时间越短表示功能越好
|
ACLR 术后 7 个月
|
|
Joint position sense test
大体时间：at 7 months post-ACLR
|
Participants will be seated and blindfolded.
Participants will perform this test in the 3D lab utilising using an eight-camera motion analysis system (200Hz: Bonita-B10, Vicon, UK).
The assessor will active extend the participant's knee to between 0-30 degrees and hold it there.
The participant will then be asked to replicate that angle 5 times for each leg
|
at 7 months post-ACLR
|
|
single leg balance (eyes open versus eyes closed)
大体时间：at 7 months post-ACLR
|
Participants will perform this test in the 3D lab utilising using an eight-camera motion analysis system (200Hz: Bonita-B10, Vicon, UK) and integrated force plates (1000Hz BP400600, AMTI, USA).
Participants will stand on one leg with less than 15 degrees knee flexion.
They will be asked to balance for 20 seconds.
3 trials will be taken for each leg with participants' eyes open and 3 trials of each leg whilst they are blindfolded
|
at 7 months post-ACLR
|
|
Countermovement jump- double and single leg
大体时间：at 7 months post-ACLR
|
Participants will be instructed to jump as high as they can.
This will be conducted 3 times with double leg and then 3 trials single legged (for each leg)
|
at 7 months post-ACLR
|
合作者和调查者
研究记录日期
研究主要日期
学习开始 (预期的)
初级完成 (预期的)
研究完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他研究编号
- SSC-ACL-003
药物和器械信息、研究文件
研究美国 FDA 监管的药品
研究美国 FDA 监管的设备产品
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.
访问控制列表的临床试验
-
First Affiliated Hospital of Shantou University...招聘中
-
University of ConnecticutUniversity of California, Berkeley; United States Army Research Institute of Environmental Medicine 和其他合作者完全的
-
Steadman Philippon Research InstituteÖssur Ehf撤销
-
GCS Ramsay Santé pour l'Enseignement et la Recherche招聘中