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General information
Not blinded
Single blinded
notblsingl
1
1
Since the article mentioned a different title, and since all information in the article must align with the research protocol as per the target journal's requirements, the trial's title was modified. Furthermore, the term "functional recovery" was changed to "vertical jump" in the primary variables section, in accordance with the revised title.
Since this study was conducted in a single-blind manner, the blinding procedure section has been updated.
Since the article mentionedthis study was conducted in a different title, and since all information in the article must align with the research protocol as per the target journal's requirementssingle-blind manner, the trial's title was modified. Furthermore, the term "functional recovery" was changed to "vertical jump" in the primary variablesblinding procedure section, in accordance with the revised title has been updated.
از آن جایی در مقاله عنوان متفاوتی ذکر شده ودر ژورنال هدف ذکر شده همه اطلاعات ذکر شده در مقاله باید مطابق پروتکل تحقیقاتی باشد لذا عنوان کارآزمایی تغییر یافت. هم چنین به جای اصطلاح بازیابی عملکرد با توجه به تغییر عنوان این اصطلاح به پرش عمودی در قسمت متغیر های اولیه تغییر یافت.
از آن جایی که این مطالعه به صورت یک سویه کور انجام شده، بخش نحوه کورسازی به روز شد.
از آن جایی در مقاله عنوان متفاوتی ذکر شده ودر ژورنال هدف ذکر شده همه اطلاعات ذکر شده در مقاله باید مطابق پروتکل تحقیقاتی باشد لذا عنوان کارآزمایی تغییر یافت. هم چنینکه این مطالعه به جای اصطلاح بازیابی عملکرد با توجهصورت یک سویه کور انجام شده، بخش نحوه کورسازی به تغییر عنوان این اصطلاح به پرش عمودی در قسمت متغیر های اولیه تغییر یافتروز شد.
After assigning participants to each group, the outcome assessor was unaware of (or: was blinded to) the group allocation.
After assigning participants to each group, the outcome assessor was unaware of (or: was blinded to) the group allocation.
پس از اختصاص دادن شرکت کنندگان به هر گروه ارزیاب کننده نتایج نسبت به اختصاص یافتن افراد به هر گروه اطلاعاتی ندارد.
پس از اختصاص دادن شرکت کنندگان به هر گروه ارزیاب کننده نتایج نسبت به اختصاص یافتن افراد به هر گروه اطلاعاتی ندارد.
Protocol summary
Study aim
The study compares the effects of static stretching, slow dynamic stretching, and fast dynamic stretching on performance recovery, flexibility, balance, speed, and agility after a functional fatigue protocol in football players. Additionally, it aims to identify the most effective stretching technique for maintaining or enhancing performance after fatigue in football players.
Design
The present study includes 40 participants. The participants will be randomly assigned to four groups—static stretching, fast dynamic stretching, slow dynamic stretching, and control—using simple randomization and the method of random assignment by drawing names from a ball.
Settings and conduct
In the present study, participants will perform the research interventions and the fatigue protocol at their training location.
Participants/Inclusion and exclusion criteria
Participants must have a body mass index (BMI) of 20-25 and no history of lower limb injury, trauma, or disease in the past six years, along with a limited range of motion. Additionally, they must have at least three years of regular training experience in football (three sessions per week) and should not be simultaneously participating in any other lower limb stretching program.
Intervention groups
The present study includes four groups: static stretching, fast dynamic stretching, slow dynamic stretching, and control. The first three groups perform their intervention program in a single session following a functional fatigue protocol, while the control group does not receive any intervention after fatigue.
Main outcome variables
The outcome variables of the present study are improvement in balance, flexibility, agility, and vertical jump performance.
General information
Reason for update
Since this study was conducted in a single-blind manner, the blinding procedure section has been updated.
Acronym
IRCT registration information
IRCT registration number:IRCT20230612058457N5
Registration date:2025-03-07, 1403/12/17
Registration timing:prospective
Last update:2025-08-29, 1404/06/07
Update count:2
Registration date
2025-03-07, 1403/12/17
Registrant information
Name
Mohammad Alimoradi
Name of organization / entity
Shahid Bahonar University
Country
Iran (Islamic Republic of)
Phone
+98 34 2250 1685
Email address
malimoradi@sport.uk.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2025-03-24, 1404/01/04
Expected recruitment end date
2025-04-02, 1404/01/13
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
The role of stretching protocols in enhancing post-fatigue performance and flexibility in soccer
Public title
Comparison of three stretching protocols after fatigue in football players
Purpose
Prevention
Inclusion/Exclusion criteria
Inclusion criteria:
Body Mass Index (BMI) 20-25
No history of lower limb injury, trauma, or disease in the past six years, with limited range of motion.
Participants must have at least three years of regular training experience in football (three sessions per week).
No participation in a lower limb stretching program.
Participants should be aged between 18-25 years old.
Exclusion criteria:
Age
From 18 years old to 25 years old
Gender
Male
Phase
N/A
Groups that have been masked
Outcome assessor
Sample size
Target sample size:
40
Randomization (investigator's opinion)
Randomized
Randomization description
In the present study, participants are randomly assigned to four groups—static, slow dynamic, fast dynamic, and control—using a lottery draw method by pulling names from a ball.
Blinding (investigator's opinion)
Single blinded
Blinding description
After assigning participants to each group, the outcome assessor was unaware of (or: was blinded to) the group allocation.
Placebo
Not used
Assignment
Parallel
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Ethics committee of Bu-Ali Sina University, Hamedan
Street address
Bu-Ali Sina University, Chaharbagh-e Shahid Mostafa Ahmadi Roshan, Hamedan
City
Hamedan
Province
Hamadan
Postal code
۶۵۱۷۸۳۸۶۹۵
Approval date
2025-02-17, 1403/11/29
Ethics committee reference number
IR.BASU.REC.1403.064
Health conditions studied
1
Description of health condition studied
Comparison of three types of stretching protocols pre and post of functional fatigue in soccer players
ICD-10 code
ICD-10 code description
Primary outcomes
1
Description
In the present study, flexibility is being examined.
Timepoint
Before and after the application of the fatigue protocol.
Method of measurement
Flexibility is assessed using the modified Thomas test and PKET.
2
Description
In the present study, balance is being investigated.
Timepoint
Before and after the application of the fatigue protocol.
Method of measurement
Balance is measured using the Y Balance Test.
3
Description
In the present study, agility is being investigated.
Timepoint
Before and after the application of the fatigue protocol.
Method of measurement
Agility is evaluated using the Illinois Agility Test
4
Description
In the present study, speed is being examined.
Timepoint
Before and after the application of the fatigue protocol.
Method of measurement
Speed is assessed using the 20-meter sprint test.
5
Description
In the present study, vertical jump is being examined.
Timepoint
Before and after the application of the fatigue protocol.
Method of measurement
Vertical jump is assessed using the countermovement jump test.
Secondary outcomes
empty
Intervention groups
1
Description
Intervention group: Static stretching of the hamstrings and quadriceps will include standing hamstring stretches (standing with feet hip-width apart and knees straight, participants bend forward while lowering their heads and wrapping their hands around the calf of one leg) followed by calf raises (from an initial standing position with knees straight, participants raise one leg upward while bending at the hip). Quadriceps stretching will be performed using a standing quadriceps stretch (participants stand on one leg while bending the opposite knee and holding it behind them with one hand for balance) followed by lunges (participants position one foot forward and one foot back while bending the front knee). Each stretch will be held for 30 seconds with two repetitions (once for each leg).
Category
Prevention
2
Description
Intervention group: The fast dynamic group will perform the stretches like the static group, with the only difference being that each movement will be done at 100 beats per minute.
Category
Prevention
3
Description
Intervention group: The fast dynamic group will perform the stretches like the static group, with the only difference being that each movement will be done at 50 beats per minute.
Category
Prevention
4
Description
Control group: The control group will engage in 5 minutes of active rest in the form of walking.
Category
Prevention
Recruitment centers
1
Recruitment center
Name of recruitment center
ُShahin Football Club
Full name of responsible person
Mohammad Alimoradi
Street address
Unit 6, Yekta Complex, 12th Alley, Fathali Shahi Street.
City
Kerman
Province
Kerman
Postal code
۷۶۱۴۸۱۶۹۶۱
Phone
+98 34 3225 0168
Email
malimoradi@sport.uk.ac.ir
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
The University of Bu-Ali Sina
Full name of responsible person
Arash Ghorbani
Street address
The University of Bu-Ali, Shahid Fahmideh St, Hamedan
City
Hamedan
Province
Hamadan
Postal code
6517838695
Phone
+98 81 3140 5555
Email
a.ghorbani@yahoo.com
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
The University of Bu-Ali Sina
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic
Person responsible for general inquiries
Contact
Name of organization / entity
Shahid Bahonar University
Full name of responsible person
Mohammad Alimoradi
Position
Graduated Student
Latest degree
Master
Other areas of specialty/work
Sport Medicine
Street address
Unit 6, Yekta residential complex, Fathalishahi 12 St, Kerman, Iran
City
Kerman
Province
Kerman
Postal code
7614816961
Phone
+98 34 2250 1685
Fax
Email
malimoradi@sport.uk.ac.ir
Person responsible for scientific inquiries
Contact
Name of organization / entity
Shahid Bahonar University
Full name of responsible person
Mohammad Alimoradi
Position
Graduated Student
Latest degree
Master
Other areas of specialty/work
Sport Medicine
Street address
Unit 6, Yekta residential complex, Fathalishahi 12 St, Kerman, Iran
City
Kerman
Province
Kerman
Postal code
7614816961
Phone
+98 34 2250 1685
Fax
Email
malimoradi@sport.uk.ac.ir
Person responsible for updating data
Contact
Name of organization / entity
Shahid Bahonar University
Full name of responsible person
Mohammad Alimoradi
Position
Graduated Student
Latest degree
Master
Other areas of specialty/work
Sport Medicine
Street address
Unit 6, Yekta residential complex, Fathalishahi 12 St, Kerman, Iran
City
Kerman
Province
Kerman
Postal code
7614816961
Phone
+98 34 2250 1685
Fax
Email
malimoradi@sport.uk.ac.ir
Sharing plan
Deidentified Individual Participant Data Set (IPD)
Yes - There is a plan to make this available
Study Protocol
Yes - There is a plan to make this available
Statistical Analysis Plan
Yes - There is a plan to make this available
Informed Consent Form
Yes - There is a plan to make this available
Clinical Study Report
No - There is not a plan to make this available
Analytic Code
Yes - There is a plan to make this available
Data Dictionary
Yes - There is a plan to make this available
Title and more details about the data/document
All data will be shared after anonymizing individuals, ensuring their non-identifiability.
When the data will become available and for how long
The data access period will start immeduately after the results are printed.
To whom data/document is available
The data will be made available to researchers, organizations, and institutions related to the field of football and also for publication in accessible journals.
Under which criteria data/document could be used
In order to assist scientific research and promote the implementation of executive goals with a focus on reducing musculoskeletal injuries and enhancing the performance of football players in the field,
From where data/document is obtainable
Mohammad Alimoradi/malimoradi@sport.uk.ac.ir
What processes are involved for a request to access data/document
Requests for access to data will be answered within a week