The Effect of Whole Body Vibration After ACLR
- Conditions
- ACL Injury
- Interventions
- Other: whole body vibrationOther: Conventional exercise training
- Registration Number
- NCT05254054
- Lead Sponsor
- Chinese University of Hong Kong
- Brief Summary
This is a randomised clinical trial to detect the effect of an 8-week whole body vibration training on muscle function and dynamic knee function during single leg squat and single leg hop in patients after anterior cruciate ligament reconstruction
- Detailed Description
In Hong Kong, over 3000 cases of ACL reconstruction are operated annually to restore knee stability. Despite recovery of knee passive laxity and muscle strength, dynamic knee stability is often not restored. The whole body vibration has been found to improve muscle strength, proprioception and balance after ACL reconstruction. This project will investigate the effect of whole body vibration on muscle elasticity, muscle coordination and landing knee biomechanics. It may provide useful evidence to the application of whole body vibration in improving dynamic knee stability, which will lead to a significant improvement in healthcare management for ACL patients . The current study serves to provide a clinical guideline for post-ACL reconstruction rehabilitation.
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 50
- Aged 18-50;
- Physically active before injury with Tegner score more than 6 (recreational/professional sport level);
- Scheduled for ACLR because of sport injury;
- Be able to walk with a pair of elbow crutches independently at 1 month after ACLR.
- Concomitant posterior cruciate ligament or lateral collateral ligament injury in the same knee;
- Injury to the contralateral side;
- Medical problems that are contradictory to WBV;
- Prior experience of WBV to avoid any training or memory effect;
- Women with pregnancy.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Vibration group Conventional exercise training Participants in Vibration group will receive an 8-week whole body vibration training in addition to conventional exercise training. Vibration group whole body vibration Participants in Vibration group will receive an 8-week whole body vibration training in addition to conventional exercise training. Control group Conventional exercise training Participants in Vibration group will only receive conventional exercise training.
- Primary Outcome Measures
Name Time Method knee flexion angle immediately after intervention, three month after intervention Peak value of knee flexion will be assessed by the skin marker-based motion analysis system (Vicon MX, Oxford, UK) during single leg squat and single leg hop landing.
knee valgus angle immediately after intervention, three month after intervention Peak value of knee valgus will be assessed by the skin marker-based motion analysis system (Vicon MX, Oxford, UK) during single leg squat and single leg hop landing.
knee internal rotation angle immediately after intervention, three month after intervention Peak value of knee internal rotation will be assessed by the skin marker-based motion analysis system (Vicon MX, Oxford, UK) during single leg squat and single leg hop landing.
Vertical ground reaction force immediately after intervention, three month after intervention Peak vertical ground reaction force will be evaluated by a synchronized force plate during single leg hop landing.
Knee valgus torque immediately after intervention, three month after intervention Peak knee valgus torque will be evaluated by a synchronized force plate during single leg hop landing.
Knee extension torque immediately after intervention, three month after intervention Peak knee extension torque will be evaluated by a synchronized force plate during single leg hop landing.
- Secondary Outcome Measures
Name Time Method muscle elasticity immediately after intervention, three month after intervention Shear elastic modulus of vastus medialis, vastus lateralis, semimembranosus and biceps femoris will be assessed by shear wave elastography ultrasound.
muscle strength immediately after intervention, three month after intervention Isometric muscle strength of quadriceps and hamstring will be tested using an hand-held dynamometer. The isokinetic muscle strength of quadriceps and hamstring will be tested at 60°/s and 180°/s by the isokinetic dynamometer
muscle activation immediately after intervention, three month after intervention Muscle activity level of vastus lateralis, vastus medialis, biceps femoris and semitendinosus will be assessed by electromyography
Trial Locations
- Locations (1)
The chinese University of Hong Kong
🇭🇰Hong Kong, Hong Kong