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The Effect of Early WBVT on Neuromuscular Control After ACLR (WBVT)

This study has been completed.
Information provided by (Responsible Party):
Fu Chak Lun Allan, Hospital Authority, Hong Kong Identifier:
First received: February 18, 2011
Last updated: February 12, 2013
Last verified: February 2013
To investigate the effect of early WBVT on neuromuscular control after ACLR.

Condition Intervention
Rupture of Anterior Cruciate Ligament
Other: Whole body vibration therapy
Other: Control

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: The Effect of Early Whole-Body Vibration Therapy on Neuromuscular Control After Anterior Cruciate Ligament Reconstruction

Further study details as provided by Fu Chak Lun Allan, Hospital Authority, Hong Kong:

Primary Outcome Measures:
  • Joint position sense [ Time Frame: 1-month post-operation, 3-months post-operation, 6-months post-operation ]
    Using Biodex Dynamometer (Biodex Medical Systems, Shirley, NY, USA) for measurement.

  • Muscle isokinetic strength [ Time Frame: Pre-operation, 3-months post-operation, 6-months post-operation ]
    Using Cybex NORM dynamometer for measurement.

  • Postural control [ Time Frame: 1-month post-operation, 3-months post-operation, 6-months post-operation ]
    Using Biodex Stability System (BSS; Biodex Medical Systems, Shirley, NY, USA with software version 3.1) for measurement

  • Functional Outcome [ Time Frame: Pre-operation and 6-months post-operation ]

    Functional Outcomes

    • single leg hop test
    • triple leg hop test
    • caricoca test
    • Shuttle run test

  • Knee joint stability [ Time Frame: Pre-operation, 3-months post-operation, 6-months post-operation ]
  • Knee range of motion [ Time Frame: 6-months post operation ]

Enrollment: 48
Study Start Date: November 2010
Study Completion Date: February 2012
Primary Completion Date: February 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Whole body vibration therapy
Whole body vibration therapy on top of conventional physiotherapy treatment.
Other: Whole body vibration therapy
The WBVT will be carried out in a vibration plates operated in vertical direction. The frequency of that vibration can be adjusted step of 5Hz with vibration frequency ranges from 20Hz to 60Hz. The amplitude can be set as 4mm.
Other Name: Fitvibe Excel Pro - model number: 332015 (N.V. GymnaYniphy, Bilzen, Belgium)
Active Comparator: Control
Conventional post-operative physical therapy rehabilitation exercises.
Other: Control
Conventional post-operative physical therapy exercises and rehabilitation.

Detailed Description:

The knee joint position sense, postural control, muscular strength and functional ability after anterior cruciate ligament construction (ACLR) are distorted, and even after a period of rehabilitation.

Previous studies had demonstrated that there was improvement in knee joint, postural balance, muscle strength and functional outcome in elderly, stroke and spastic patients already. It has also been concluded that the balance in elderly, postmenopausal women, Parkinson's disease, multiple sclerosis, stroke and spastic patients were all significantly improved. Some studies showed that the proprioception in osteoarthritis patients significantly improve. Knee strength is also one of the aspect being improved.

However, no studies focus on the early effect of WBVT on knee joint proprioception, postural control, muscle strength, knee joint stability and functional ability in ACLR cases. This study is to answer this research gap.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • ACLR with a single-bundle approach
  • no complication such as wound infection after the ACLR
  • able to walk with a pair of elbow crutches independently at one month post operation

Exclusion Criteria:

  • concomitant posterior cruciate ligament, lateral collateral ligament, and medial collateral ligament injury in the same knee
  • previous operation on either lower limbs
  • medical problems such as pregnancy, acute thrombosis, serious cardiovascular disease, pacemaker, acute hernia, discopathy, spondylolysis, severe diabetes, epilepsy, recent infections, severe migraine, tumors or kidney stones etc
  • neurological conditions such as Guillain-Barre ́ syndrome, myasthenia gravis, and postpolio syndrome
  • prior experience of WBVT
  Contacts and Locations
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Please refer to this study by its identifier: NCT01300182

Hong Kong
Physiotherapy Department, Prince of Wales Hospital
Shatin, Hong Kong, 852
Sponsors and Collaborators
Chinese University of Hong Kong
Principal Investigator: Chak Lun Allan Fu Physiotherapy Department, Prince of Wales Hospital
  More Information

Responsible Party: Fu Chak Lun Allan, Mr Fu Chak Lun Allan, Hospital Authority, Hong Kong Identifier: NCT01300182     History of Changes
Other Study ID Numbers: wbvtrct
Study First Received: February 18, 2011
Last Updated: February 12, 2013

Keywords provided by Fu Chak Lun Allan, Hospital Authority, Hong Kong:

Additional relevant MeSH terms:
Wounds and Injuries processed this record on May 25, 2017