The objective of this randomized trial is to investigate the effect of Whole Body Vibration and subjects' position on hamstring flexibility in subjects with hamstring shortness . In this study 72 subjects who meet the inclusion/exclusion criteria will be recruited and randomly assigned into one of the 4 intervention or 2 control groups. The subjects in the intervention group 1 will receive stretching of both hamstrings simultaneously, with WBV.The subjects in the intervention group 2 will receive stretching of hamstrings individually with WBV. The subjects in the intervention group 3 will receive firstly WBV, then stretch will be perform for both hamstrings simultaneously . The subjects in the intervention group 4 will receive firstly WBV, then stretch will be perform for individual hamstrings separately.The subjects in control group 1 will receive stretching of both hamstrings simultaneously, without WBV. The subjects in control group 2 will receive stretching of hamstrings individually, without WBV. Intervention lasts for 4 weeks.Limitation of hamstring muscle range of motion of all participants will be measured before intervention, immediately after and 1 month after the intervention, and will be compared among 6 groups.
General information
Acronym
IRCT registration information
IRCT registration number:IRCT201207194203N5
Registration date:2012-08-16, 1391/05/26
Registration timing:registered_while_recruiting
Last update:
Update count:0
Registration date
2012-08-16, 1391/05/26
Registrant information
Name
Atefeh Aminian Far
Name of organization / entity
Semnan University of Medical Sciences
Country
Iran (Islamic Republic of)
Phone
+98 23 1335 4180
Email address
aminianfar@razi.tums.ac.ir
Recruitment status
Recruitment complete
Funding source
Deputy of Research, Semnan University of Medical Sciences (Governmental source)
Expected recruitment start date
2012-07-22, 1391/05/01
Expected recruitment end date
2012-10-22, 1391/08/01
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Comparative study of the effect of whole body vibration and subjects' position on hamstring flexibility in subjects with hamstring shortness.
Public title
Hamstring muscle stretching and Whole body vibration
Purpose
Treatment
Inclusion/Exclusion criteria
Inclusion criteria:Presence of hamstring shortness confirmed with 90-90 test.
Female students
Exclusion criteria: Orthopedic and neurological disorders, previous history of lower limb surgery, lower limb fracture, hamstring strain during last year, disease like arthritis, ligament and meniscus injury, previous history of spinal surgery, spinal trauma, previous history of regular sport activity during last year, previous history of aerobic program during last 6 months, previous history of cardiovascular and respiratory disease.
Age
From 18 years old to 25 years old
Gender
Female
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size:
72
Randomization (investigator's opinion)
Randomized
Randomization description
Blinding (investigator's opinion)
Single blinded
Blinding description
Placebo
Not used
Assignment
Parallel
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Deputy of Research, Semnan University of Medical Sciences
Street address
Bassij Blvd, Semnan University of Medical Sciences, Deputy of Research, Semnan, Iran.
City
Semnan
Postal code
3519899951
Approval date
2012-07-11, 1391/04/21
Ethics committee reference number
185247/91
Health conditions studied
1
Description of health condition studied
Muscle contracture
ICD-10 code
M62.4
ICD-10 code description
Contracture of muscle
Primary outcomes
1
Description
Knee range of motion limitation
Timepoint
Before Intervention, 4 weeks following the intervention, 1 month following end of intervention
Method of measurement
through goniometry by 90-90 test
Secondary outcomes
empty
Intervention groups
1
Description
Control (1): Stretching of both hamstrings simultaneously, without WBV. Stretch will be perform in 5 sets of 30 seconds with 20 s rest interval. Stretches will be done 3 times per week for 4 weeks..
Category
Rehabilitation
2
Description
Intervention (1): Stretching of both hamstrings simultaneously, on WBV platform when it is on. Stretch will be perform in 5 sets of 30 seconds with 20 s rest interval. The parameters of WBV are as follows: High amplitude and frequency of 30 Htz. Stretches will be done 3 times per week for 4 weeks.
Category
Rehabilitation
3
Description
Intervention (2): Stretching of hamstrings individually on WBV platform when it is on. Stretch will be perform in 5 sets of 30 seconds with 20 s rest interval, separately. The parameters of WBV are as follows: High amplitude and frequency of 30 Htz. Stretches will be done 3 times per week for 4 weeks.
Category
Rehabilitation
4
Description
Intervention (3): The subject firstly will receive WBV for 5 sets of 30 seconds with 20 s rest interval in squat position. After receiving WBV, stretch will be perform for both hamstrings simultaneously, for 5 sets of 30 seconds with 20 s rest interval. Stretches will be done 3 times per week for 4 weeks.
Category
Rehabilitation
5
Description
Intervention (4): The subject firstly will receive WBV for 5 sets of 30 seconds with 20 s rest interval in squat position. After receiving WBV, stretch will be perform for individual hamstrings separately, for 5 sets of 30 seconds with 20 s rest interval. Stretches will be done 3 times per week for 4 weeks.
Category
Rehabilitation
6
Description
Control (2): Stretching of hamstrings individually without WBV. Stretch will be perform in 5 sets of 30 seconds with 20 s rest interval, separately Stretches will be done 3 times per week for 4 weeks..
Category
Rehabilitation
Recruitment centers
1
Recruitment center
Name of recruitment center
Clinics under supervision of Semnan University of Medical Sciences
Full name of responsible person
Dr. Atefeh Aminian Far
Street address
Kilometer 5 Damghan road, Semnan University of Medical Sciences
City
Semnan
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Deputy of Research, Semnan University of Medical Sciences
Full name of responsible person
Dr. Raheb Ghrbani
Street address
Bassij Blvd, Semnan University of Medical Sciences, Deputy of Research, Semnan, Iran.
City
Semnan
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Deputy of Research, Semnan 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
Semnan University of Medical Sciences
Full name of responsible person
Dr. Atefeh Aminian Far
Position
Ph.D of Physiotherapy/ Assistant Professor
Other areas of specialty/work
Street address
Kilometer 5 Damghan road, Semnan University of Medical Sciences
City
Semnan
Postal code
1439957181
Phone
+98 23 1335 4182
Fax
Email
aminfar@sem-ums.ac.iraminfar83@yahoo.com
Web page address
Person responsible for scientific inquiries
Contact
Name of organization / entity
Semnan University of Medical Sciences
Full name of responsible person
Dr. Atefeh Aminian Far
Position
Ph.D of Physiotherapy/ Assistant Professor
Other areas of specialty/work
Street address
Kilometer 5 Damghan road, Semnan University of Medical Sciences
City
Semnan
Postal code
1439957181
Phone
+98 23 1335 4182
Fax
Email
aminfar@sem-ums.ac.iraminfar83@yahoo.com
Web page address
Person responsible for updating data
Contact
Name of organization / entity
Semnan University of Medical Sciences
Full name of responsible person
Dr. Atefeh Aminian Far
Position
Ph.D of Physiotherapy/ Assistant Professor
Other areas of specialty/work
Street address
Kilometer 5 Damghan road, Semnan University of Medical Sciences
City
Semnan
Postal code
1439957181
Phone
+98 23 1335 4182
Fax
Email
aminfar@sem-ums.ac.iraminfar83@yahoo.com
Web page address
Sharing plan
Deidentified Individual Participant Data Set (IPD)