comparative evaluation of electromyographic activation pattern of core and lower extremity muscles to external perturbation between patients with patellofemoral pain syndrome and healthy subjects
to compare how the muscles response to unexpected external perturbation in patient with patellofemoral pain syndrome (PFPS) and healthy subjects, 23 females with PFP and 23 healthy controls participate in this study. An unexpected perturbation is applied to the subject's ilium (unaffected sides of the patients and the matched sides of healthy subjects) by a one kilogram medicine ball with an energy of 20% of subject’s BMI. The EMG activation of erector spine, transversus abdominis and internal obliqus, gluteus medius, tensor fascia lata, proneus longus, vastus lateralis and vastus medialis obliqus in response to unexpected mediolateral pelvic perturbation is measured. the muscles activity is recorded from 5 seconds before to 1o seconds after perturbation.data is collected 3 times with 1 minute interval and the average will be considered for analysis.
General information
Acronym
IRCT registration information
IRCT registration number:IRCT201204212391N6
Registration date:2012-08-22, 1391/06/01
Registration timing:retrospective
Last update:
Update count:0
Registration date
2012-08-22, 1391/06/01
Registrant information
Name
Zahra Rojhani Shirazi
Name of organization / entity
Shiraz University of Medical Sciences, School of Rehabilitation Sciences
Country
Iran (Islamic Republic of)
Phone
+98 71 1627 1552
Email address
rojhaniz@sums.ac.ir
Recruitment status
Recruitment complete
Funding source
Shiraz University of Medical Sciences
Expected recruitment start date
2011-09-23, 1390/07/01
Expected recruitment end date
2012-02-20, 1390/12/01
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
comparative evaluation of electromyographic activation pattern of core and lower extremity muscles to external perturbation between patients with patellofemoral pain syndrome and healthy subjects
Public title
evaluation of response to external perturbation in patients with patellofemoral pain syndrome and healthy subjects
Purpose
Other
Inclusion/Exclusion criteria
Iinclusion criteria: Women 18 to 40 years with anterior knee pain in one side; anterior or retropatellar knee pain reported on at least two of the following activities: running, prolonged sitting, stairs ascent, squatting, running, kneeling and hopping/jumping; tenderness with posteromedial or posterolateral patellar facets palpation; an average pain level of 3 to 6 cm on a 10 cm visual analogue Scale in resistive knee extension; insidious onset of symptoms unrelated to a traumatic incident andexistence of symptoms for at least 3 months; positive patellar grind test; FIQ above 11
Exclusion criteria: History of patellar dislocation; Lesions of articular cartilage; osteoarthritis; spine and hip pain and referred pain from these areas; knee deviations; inflammatory joint diseases during the last 1 year; abnormal medial longitudinal arch; pregnancy;central nervous system diseases; bilateral patellofemoral pain syndrome; metabolic diseases like diabetes and RA; professional athletes (who participate in a sport at least 2 hours a day and 3 times a week regularly
Age
From 18 years old to 40 years old
Gender
Female
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size:
54
Randomization (investigator's opinion)
N/A
Randomization description
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Single
Other design features
The applied intervention was identical for both healthy and patient groups
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Shiraz University of Medical Sciences
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Postal code
Approval date
2011-09-23, 1390/07/01
Ethics committee reference number
5925
Health conditions studied
1
Description of health condition studied
patellofemoral pain syndrome
ICD-10 code
M22.4
ICD-10 code description
Chondromalacia patellae
Primary outcomes
1
Description
electromyographic activation
Timepoint
from 5s before to 10s after the intervention
Method of measurement
electromyography system
Secondary outcomes
empty
Intervention groups
1
Description
intervention for both healthy and patient groups: participants will be under an uexpected perturbation which is applied by a 1kg ball to their illium, with an energy equal to 20 percent of each person's Body Mass Index .
Category
Other
Recruitment centers
1
Recruitment center
Name of recruitment center
physiotherapyʼs clinics
Full name of responsible person
Zahra Rojhani Shirazi
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
gholamreza hatam
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Shiraz University of Medical Sciences
Proportion provided by this source
100
Public or private sector
empty
Domestic or foreign origin
empty
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
empty
Person responsible for general inquiries
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Zahra Rojhani Shirazi
Position
PHD
Other areas of specialty/work
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Postal code
Phone
+98 71 1627 1552
Fax
Email
rojhaniz@sums.ac.ir
Web page address
Person responsible for scientific inquiries
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Zahra Rojhani Shirazi
Position
PHD
Other areas of specialty/work
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Postal code
Phone
+98 71 1627 1552
Fax
Email
rojhaniz@sums.ac.ir
Web page address
Person responsible for updating data
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Zahra Rojhani Shirazi
Position
PHD
Other areas of specialty/work
Street address
Shiraz Faculty of Rehabilitation, Chamran blvd.
City
shiraz
Postal code
Phone
+98 71 1627 1552
Fax
Email
rojhaniz@sums.ac.ir
Web page address
Sharing plan
Deidentified Individual Participant Data Set (IPD)