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The Effect of Eight Weeks of Upper Extremity Performance-Based Injury Prevention Exercises on Glenohumeral Joint Range of Motion and Functional Stability in Male Volleyball Players

Protocol summary

Study aim
The effect of eight weeks of shoulder injury prevention training on range of motion and performance of adolescent volleyball players.
Design
The clinical trial has an intervention group and a control group, , no blinding, simple randomization, phase zero on 60 volleyball players, which used the rand function of Excel software for randomization.
Settings and conduct
"This study involves 60 volleyball players (30 males, 30 females) at Shahid Beheshti University gym. The intervention consists of an 8-week shoulder injury prevention program (3 sessions/week, 20 min/session) implemented during warm-ups. Shoulder ROM and upper limb function will be assessed using a goniometer and the Closed Kinetic Chain Upper Extremity Stability test, respectively
Participants/Inclusion and exclusion criteria
Inclusion criteria: At least 3 regular training sessions per week; no history of spine or upper limb surgery; 2 years of volleyball experience; age range 12-15 years Exclusion criteria: Older and younger age range, unwillingness to continue the research, having organ damage
Intervention groups
The intervention of the present study is the Oslo Sport Trauma Research Center injury prevention exercises, which were designed by the Oslo Injury Prevention Research Center. These exercises will be performed for 8 weeks and 3 sessions per week for 20 minutes as a shoulder warm-up protocol. In the control group, no intervention is performed and they continue with their normal program.
Main outcome variables
Primary outcomes include shoulder internal/external rotation range of motion, upper limb functional balance, and sports injury incidence rate

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20240306061185N6
Registration date: 2025-12-25, 1404/10/04
Registration timing: prospective

Last update: 2025-12-25, 1404/10/04
Update count: 0
Registration date
2025-12-25, 1404/10/04
Registrant information
Name
Hossein Rezaei
Name of organization / entity
The University of Shahid Beheshti
Country
Iran (Islamic Republic of)
Phone
+98 24 3562 3177
Email address
hosse.rezaei@mail.sbu.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2025-12-28, 1404/10/07
Expected recruitment end date
2025-12-31, 1404/10/10
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
The Effect of Eight Weeks of Upper Extremity Performance-Based Injury Prevention Exercises on Glenohumeral Joint Range of Motion and Functional Stability in Male Volleyball Players
Public title
Shoulder injury prevention exercises for volleyball players
Purpose
Prevention
Inclusion/Exclusion criteria
Inclusion criteria:
Having 3 regular training sessions per week Age range 12 to 15 years No history of spine or upper limb surgery Experience in volleyball for 2 years
Exclusion criteria:
Older and younger ages Unwillingness to participate in research Having damage to the organs
Age
From 12 years old to 15 years old
Gender
Both
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size: 60
Randomization (investigator's opinion)
Randomized
Randomization description
In this study, simple randomization method is used and the randomization unit is "individual". Random sequence is generated in Excel software using RAND function and MOD ROW function is used for grouping. In order to observe allocation concealment, each individual's allocation code is placed in illegible and sealed envelopes after being determined in Excel.
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Parallel
Other design features

Secondary Ids

empty

Ethics committees

1

Ethics committee
Name of ethics committee
Shahid Beheshti University Ethics Committee
Street address
Shahid Beheshti University, Shahriari square, Volanjek Town, Tehran
City
Tehran
Province
Tehran
Postal code
1983969411
Approval date
2025-10-11, 1404/07/19
Ethics committee reference number
IR.SBU.REC.1404.185

Health conditions studied

1

Description of health condition studied
Preventing shoulder pain and injury
ICD-10 code
ICD-10 code description

Primary outcomes

1

Description
Range of motion
Timepoint
Before the intervention and eight weeks after the intervention
Method of measurement
360 degree goniometer

2

Description
Closed Kinetic Chain Upper Extremity Stability Test
Timepoint
Before the intervention and eight weeks after the intervention
Method of measurement
Closed Kinetic Chain Upper Extremity Stability Test: The hands should be placed on the bars in a push-up position, and then one hand should be lifted off the ground. While maintaining balance on one hand, the guiding hand should be lifted off the ground and approached and touched the hand bar on which it is resting. Then, return to the original push-up position and repeat the movement with the other hand.

Secondary outcomes

empty

Intervention groups

1

Description
Intervention group: The Oslo Sports Trauma Research Center Shoulder Injury Prevention Exercises are designed by the Oslo Sports Trauma Research Center to prevent shoulder injuries. The training group will use this protocol for warm-up for eight weeks, three sessions per week for 20 minutes. A goniometer will be used to measure the variables of shoulder internal and external rotation range of motion, and a closed-chain functional test will be used to assess performance in the pre-test and post-test.
Category
Prevention

2

Description
Control group: During the research period, there will be no intervention in the control group and they will do their usual exercises. Also, the range of motion of the shoulder internal and external rotation and the closed chain functional test will be measured in the pre-test and post-test.
Category
Prevention

Recruitment centers

1

Recruitment center
Name of recruitment center
Sports Science Laboratory of Shahid Beheshti University
Full name of responsible person
Sirus Sheikhi
Street address
Shahid Beheshti University, Shahriari square, Volanjek Town, Tehran
City
Tehran
Province
Tehran
Postal code
1983969411
Phone
+98 21 2243 1953
Email
Moh_hosseini@sbu.ac.ir

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
The University of Shahid Beheshti
Full name of responsible person
Seyed Mohammad Hosseini
Street address
Shahid Beheshti University, Shahriari square, Volanjek Town, Tehran
City
Tehran
Province
Tehran
Postal code
1983969411
Phone
+98 21 2243 1953
Email
moh_hosseini@sbu.ac.ir
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
No
Title of funding source
The University of Shahid Beheshti
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
The University of Shahid Beheshti
Full name of responsible person
Hossein Rezaei
Position
PhD student
Latest degree
Master
Other areas of specialty/work
sport injury and corrective exercises
Street address
No 403., Nawab Safavi Ave., Imam Hossein Square., Sain Qala
City
Sain Qala
Province
Zanjan
Postal code
4574148543
Phone
+98 24 3562 3177
Email
hosse.rezaei@mail.sbu.ac.ir

Person responsible for scientific inquiries

Contact
Name of organization / entity
The University of Shahid Beheshti
Full name of responsible person
Hossein Rezaei
Position
PhD student
Latest degree
Master
Other areas of specialty/work
sport injury and corrective exercises
Street address
No 403., Nawab Safavi Ave., Imam Hossein Square., Sain Qala
City
Sain Qala
Province
Zanjan
Postal code
4574148543
Phone
+98 24 3562 3177
Email
hosse.rezaei@mail.sbu.ac.ir

Person responsible for updating data

Contact
Name of organization / entity
The University of Shahid Beheshti
Full name of responsible person
Hossein Rezaei
Position
PhD student
Latest degree
Master
Other areas of specialty/work
sport injury and corrective exercises
Street address
No 403., Nawab Safavi Ave., Imam Hossein Square., Sain Qala
City
Sain Qala
Province
Zanjan
Postal code
4574148543
Phone
+98 24 3562 3177
Email
hosse.rezaei@mail.sbu.ac.ir

Sharing plan

Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Undecided - It is not yet known if there will be a plan to make this available
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available
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