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Therapeutic Effects of Cryotherapy on Arthrogenic Muscle Inhibition in Patients With Cruciate Ligament Reconstruction

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified May 2014 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
National Taiwan University Hospital Identifier:
First received: January 6, 2011
Last updated: May 27, 2014
Last verified: May 2014

Anterior cruciate ligament(ACL) injury is one of the most common sport injuries. The major problem after ACL reconstruction or rehabilitation program is quadriceps weakness. Previous studies suggested that cryotherapy and transcutaneous electrical nerve stimulation(TENS) can effectively reduce the arthrogenic muscle inhibition caused by experimental swelling.


To exam the effects of 12 weeks cryotherapy and TENS on arthrogenic muscle inhibition in subjects with ACL reconstruction.


Prospective study.


Male subjects with isolated ACL injury, age between 18~40 years old are going to receive an ACL reconstruction surgery.


Quadriceps activation level, quadriceps peak torque during maximal voluntary contraction and rate of force development are measure at presurgery, 3-month, 6-month after surgery. After surgery, subjects will receive 12 weeks, 3 days/week, training programs included 20 minutes cryotherapy and exercise training with TENS.

Data analysis:

Data will be analyzed using SPSS 13.0 software (SPSS Inc., Chicago, IL). One-way ANOVA will be used to analysis data.

Condition Intervention
Anterior Cruciate Ligament Injury
Device: cryotherapy

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Therapeutic Effects of Cryotherapy and Transcutaneous Nerves Stimulation on Arthrogenic Muscle Inhibition in Patients With Anterior Cruciate Ligament Reconstruction

Resource links provided by NLM:

Further study details as provided by National Taiwan University Hospital:

Primary Outcome Measures:
  • Muscle activation [ Time Frame: 6 months ]
    To provide information of individual muscles for the correlation analyses, parameters of muscle activation, such as the integrated electromyography (EMG) normalized to the maximal M wave, are favored.

Estimated Enrollment: 30
Study Start Date: January 2011
Estimated Study Completion Date: December 2014
Estimated Primary Completion Date: September 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: ice, rate of force development
to monitor the long term effect of cryotherapy in rate of force development.
Device: cryotherapy
cryotherapy is given with other physical training

Detailed Description:

Examination procedure:

  1. Skin preparation and EMG setting.
  2. Fill out knee joint function questionnaire.
  3. Warmup with a stationary bike.
  4. Single hop for distance.
  5. MVIC test and EMG recording.
  6. Endurance test.
  7. Record surface EMG of vastus lateralis, vastus medialis, biceps femoris and semitendinosus during maximal voluntary contraction.

Ages Eligible for Study:   20 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male subjects with isolated ACL injury, age between 18~40 years old are going to receive an ACL reconstruction surgery.

Exclusion Criteria:

  • meniscus lesion, bony fracture and osteochondral lesions
  Contacts and Locations
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Please refer to this study by its identifier: NCT01273649

Contact: HK Wang, PhD

National Taiwan University Recruiting
Taipei, Taiwan, 100
Contact: HK Wang, PhD    00886-02-33668134   
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: HK Wang, PhD National Taiwan University Hospital
  More Information

Responsible Party: National Taiwan University Hospital Identifier: NCT01273649     History of Changes
Other Study ID Numbers: 201007065R
Study First Received: January 6, 2011
Last Updated: May 27, 2014

Keywords provided by National Taiwan University Hospital:
muscle activation
ACL reconstruction
TENS processed this record on May 25, 2017