- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02734030
Knee Extensor Muscle Properties in Young Women Symptomatic and Asymptomatic for Anterior Knee Pain
October 24, 2017 updated by: Marco Aurélio Vaz, PhD, Federal University of Rio Grande do Sul
Knee Extensor Muscle Inhibition and Neuromechanical and Morphological Properties in Young Women Symptomatic and Asymptomatic for Anterior Knee Pain
This study aims to compare the knee extensors' mechanical, morphological and myoelectric properties between subjects affected by anterior knee pain and a healthy control group.
The investigators hypothesis is that patients with anterior knee pain present a reduction in the knee extensors' mechanical, morphological and myoelectric properties due to chronic muscle inhibition produced by the syndrome.
In addition, the study also aims to evaluate whether there are differences in methodology for application of the Interpolated Twitch Technique for evaluation of the quadriceps muscle inhibition by comparing the use of supramaximal electrical stimulation on the femoral nerve (gold standard) with stimulation on the motor point (new methodology) in healthy subjects and individuals affected by anterior knee pain.
The investigators hypothesis is that the stimulation on the motor point is less discomfortable than on the femoral nerve and muscle inhibition results are less variable (with lower dispersion) due to such lower discomfort
Study Overview
Status
Completed
Conditions
Detailed Description
Participants were divided in two groups (control group, n=16 and anterior knee pain group, n=16).
Prior to participation, informed consent was obtained from all subjects.
The evaluation was performed at the lower limb with severe symptoms of anterior knee pain in the patients, and at the dominant limb in the control group.
Quadriceps Muscle inhibition was estimated using the Interpolated Twitch Technique, which involves applying a single electrical twitch stimulation to the femoral nerve (gold standard) during a maximal isometric knee extensor contraction.
Muscle inhibition measurements were obtained with the aid of a Grass S88 (Quincy, MA, USA.) Muscle Stimulator in combination with and isolation unit approved for human use.
Isometric and isokinetic knee extensor torques were obtained with a Biodex System 3 dynamometer (Biodex Medical System, Shirley - NY, USA).
Electromyographic muscle activity was measured with bipolar surface electrodes (Kendall, Meditrace - 100; Ag/AgCl) that were placed on the muscle bellies of vastus medialis, vastus lateralis and rectus femoris.
Muscle architecture was measured with a B-mode ultrasonographic system (SSD; Aloka Inc., Tokyo, Japan) with a linear-array probe (60 mm, 7.5MHz; Aloka).
Single Leg Squat was used for clinical evaluation of the lower limb functionality.
Study Type
Observational
Enrollment (Actual)
32
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Rio Grande do Sul
-
Porto Alegre, Rio Grande do Sul, Brazil, 90690-200
- Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
20 years to 40 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
Female
Sampling Method
Probability Sample
Study Population
Young women symptomatic and assymptomatic for anterior knee pain syndrome
Description
Inclusion Criteria:
Anterior Knee pain group:
- Retropatellar or peripatellar knee pain in at least 2 of the following functional activities: stair ascent or descent, running, kneeling, squatting, prolonged sitting, jumping;
- Score smaller than 85 points on the Kujala Questionnaire;
- Physically active according to the International Physical Activity Questionnaire (IPAQ - short version)
- Body mass index less than 30
Control group:
- Knee pain-free females with no history of lower limb injuries
Exclusion Criteria:
- Body mass index higher than 30
- Sedentary subjects
- Cardiovascular, neurological or cognitive disorders
- Any cardiorespiratory, neuromuscular, or metabolic disease that could represent an absolute contraindication or a contraindication to the performance of maximum strength tests
- Previous surgery on lower limb
- Participation in a strength-training programme or physiotherapy treatment for knee injuries in the past six months
- Otherwise associated injury in the lower limb joints other than anterior knee pain syndrome
- Pregnancy
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
---|
Control Group
Knee pain-free females with no history of lower limb injuries serving as a control group. . |
Anterior Knee Pain Group
Females with anterior knee pain syndrome were enrolled in this group.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Torque
Time Frame: Torque was measured during a single visit to the laboratory during the study.The evaluation was performed up to 5 months
|
Torque is an expression of the muscular strength and was assessed by dynamometry.
|
Torque was measured during a single visit to the laboratory during the study.The evaluation was performed up to 5 months
|
Muscular architecture
Time Frame: Muscle architecture was measured one time during the study. The evaluation was performed up to 5 months
|
Muscular architecture (muscle thickness, pennation angle and fascicle length) was assessed by ultrasonography
|
Muscle architecture was measured one time during the study. The evaluation was performed up to 5 months
|
Muscle inhibition
Time Frame: Muscle inhibition was measured during a single visit to the laboratory during the study. The evaluation was performed up to 5 months
|
Quadriceps muscle inhibition was assessed using the Interpolated Twitch Technique comparing the use of supramaximal electrical stimulation on the femoral nerve (gold standard) with stimulation on the motor point (new methodology).
|
Muscle inhibition was measured during a single visit to the laboratory during the study. The evaluation was performed up to 5 months
|
Muscular electrical activation
Time Frame: Muscular electrical activation was measured during a single visit to the laboratory during the study. The evaluation was performed up to 5 months
|
Electrical activation was assessed by surface electromyography (EMG)
|
Muscular electrical activation was measured during a single visit to the laboratory during the study. The evaluation was performed up to 5 months
|
Patellofemoral cartilage thickness
Time Frame: Patellofemoral cartilage thickness was measured one time during the study. The evaluation was performed up to 5 months
|
Patellofemoral cartilage thickness were assessed by ultrasonography
|
Patellofemoral cartilage thickness was measured one time during the study. The evaluation was performed up to 5 months
|
Single Leg Squat
Time Frame: Single leg squat performance was measured one time during the study. The evaluation was performed up to 5 months
|
Single leg squat was measured with a video camera and allowed to determine lower limb functionality
|
Single leg squat performance was measured one time during the study. The evaluation was performed up to 5 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Knee pain
Time Frame: Knee pain during the tests was measured after all knee extensor contractions. The evaluation was performed up to 5 months.
|
Knee pain was measured with a Visual Analogue Scale
|
Knee pain during the tests was measured after all knee extensor contractions. The evaluation was performed up to 5 months.
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
April 1, 2015
Primary Completion (Actual)
March 1, 2016
Study Completion (Actual)
October 1, 2016
Study Registration Dates
First Submitted
January 26, 2016
First Submitted That Met QC Criteria
April 11, 2016
First Posted (Estimate)
April 12, 2016
Study Record Updates
Last Update Posted (Actual)
October 26, 2017
Last Update Submitted That Met QC Criteria
October 24, 2017
Last Verified
October 1, 2017
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- UFRGS - 1.032.452
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Anterior Knee Pain Syndrome
-
University of ThessalyRecruitingAnterior Knee Pain SyndromeGreece
-
University of Texas at AustinRecruiting
-
Hebrew University of JerusalemShaare Zedek Medical Center; International Diabetes FederationCompletedAnterior Knee Pain SyndromeIsrael
-
Universidad de GranadaUnknownAnterior Knee Pain Syndrome
-
Messiah CollegeUnknownAnterior Knee Pain Syndrome
-
State University of New York - Upstate Medical...CompletedAnterior Knee Pain SyndromeUnited States
-
Northern Orthopaedic Division, DenmarkWithdrawn
-
Riphah International UniversityRecruitingAnterior Knee Pain SyndromePakistan
-
Banff Sport Medicine FoundationNot yet recruitingAnterior Knee Pain SyndromeCanada
-
Hospital del MarCompletedAnterior Knee Pain SyndromeSpain