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The effect of 8 weeks of age-specific sport program on some predictive indicators of lower limb injury and performance of taekwondo girls aged 9 to 12 years

Protocol summary

Study aim
ه The aim of this study is to investigate an age-specific training program on some predictive indicators of lower limb injury and performance in girl taekwondo athletes aged 9 to 12 years.
Design
A clinical trial with the control group, with parallel groups, randomized
Settings and conduct
30 female taekwondo athletes will be randomly assigned to two groups, control and experimental, according to the inclusion and exclusion criteria. Before the intervention begins, tests of Functional and injury prediction tests will be taken from the subjects. The intervention will begin two days after the tests are completed. The intervention includes agility, balance, flexibility, plyometric, and strengthening exercises. Before each exercise, the examiner will first explain the correct execution method to the participants. All measurements and training will be done at the Taekwondo gym and on the tatami.
Participants/Inclusion and exclusion criteria
inclusion criteria: Taekwondo girls aged 9 to 12 who have at least one year of sports experience in this field and at least they have a yellow belt. Exclusion criteria : Having an injury in the lower extremities or a history of injury in the past year , having abnormalities in the lower extremities, a history of knee and ankle ligament surgery , fractures of the lumbar-pelvic region and lower limb, a history of neurological and systemic diseases
Intervention groups
The intervention group will participate in an age-specific exercise program for 8 weeks with three 15-minute sessions per week, while the control group will not receive any intervention. The intervention will be applied in the form of exercises and will include agility, balance, flexibility, plyometric, and strengthening exercises.
Main outcome variables
Agility, performance speed, anaerobic power, dynamic balance, lumbar and pelvic range of motion

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20180626040244N7
Registration date: 2025-06-25, 1404/04/04
Registration timing: prospective

Last update: 2025-06-25, 1404/04/04
Update count: 0
Registration date
2025-06-25, 1404/04/04
Registrant information
Name
Rahman Sheikhhoseini
Name of organization / entity
Allameh Tabataba'i University
Country
Iran (Islamic Republic of)
Phone
+98 21 4839 4134
Email address
rahmanhoseini@atu.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2025-07-29, 1404/05/07
Expected recruitment end date
2025-09-29, 1404/07/07
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
The effect of 8 weeks of age-specific sport program on some predictive indicators of lower limb injury and performance of taekwondo girls aged 9 to 12 years
Public title
The effect of the age-specific program on the predictive indicators of lower limb injury and performance of taekwondo girls.
Purpose
Prevention
Inclusion/Exclusion criteria
Inclusion criteria:
Age range: 9 to 12 years old Having at least a yellow belt Gender: Girl Having at least 1 year of experience in Taekwondo
Exclusion criteria:
Having an injury in the lower extremities or a history of injury in the past year that has caused the person to stop exercising for a week. Having a clear abnormality in the lower limbs and trunk according to the New York criteria History of knee and ankle ligament surgery or fractures of the lumbar, pelvic, and lower limb areas History of neurological and systemic disease Body pain that worsens with exercise
Age
From 9 years old to 12 years old
Gender
Female
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size: 30
Randomization (investigator's opinion)
Randomized
Randomization description
Randomization will be done as simple method with card. The type of intervention will be put in sealed envelopes (15 cards for each group). Individuals are listed in order of attendance. After including in the study, the envelops will shuffled and each person is asked to select an envelope. The subjects will be asked to select one envelope. According to the predicted sample size, the number of envelope will be provided. Therefore, any selected envelope will not be reused for randomization sequence. This type of randomization can result to have the same number of individuals in both groups
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
Ethics committee of Allameh Tabataba'i University
Street address
West Azadi sports complex entrance, Hakim highway
City
Tehran
Province
Tehran
Postal code
۱۴۸۵۷۴۳۴۱۱
Approval date
2025-05-24, 1404/03/03
Ethics committee reference number
IR.ATU.REC.1404.030

Health conditions studied

1

Description of health condition studied
Healthy
ICD-10 code
Z76.2
ICD-10 code description
Encounter for health supervision and care of other healthy infant and child

Primary outcomes

1

Description
Agility
Timepoint
Before the start of the intervention and two days after the end of the intervention.
Method of measurement
Stopwatch

2

Description
Performance speed
Timepoint
Before the start of the intervention and two days after the end of the intervention
Method of measurement
Mobile camera

3

Description
Vertical jump
Timepoint
Before the start of the intervention and two days after the end of the intervention
Method of measurement
Meter

4

Description
Dynamic balance
Timepoint
Before the start of the intervention and two days after the end of the intervention
Method of measurement
Y balance kit

5

Description
Lumbar-pelvic range of motion
Timepoint
Before the start of the intervention and two days after the end of the intervention
Method of measurement
Goniometer

6

Description
Anaerobic power
Timepoint
Before the start of the intervention and two days after the end of the intervention
Method of measurement
Sargent test

Secondary outcomes

empty

Intervention groups

1

Description
Intervention group: In this group, participants will participate in a special training program in the form of one warm-up for eight weeks. This training program will be done 3 sessions per week. These exercises include agility, balance, flexibility, plyometric and strengthening exercises and are designed according to the level and age of the athletes. These exercises will be performed with available tools such as sports cones, balls and body weight. Each training session will last 15 minutes and will take place in the Taekwondo gym and on tatami. The duration of the intervention will be 24 sessions in an eight-week period.
Category
Prevention

2

Description
Control group: This group will not receive any exercises from the assessor and will continue their daily routine activities.
Category
N/A

Recruitment centers

1

Recruitment center
Name of recruitment center
Faculty of physiscal educationa and sport scienecs
Full name of responsible person
Rahman Sheikhhoseini
Street address
West Azadi sports complex entrance, Hakim highway
City
Tehran
Province
Tehran
Postal code
1485743411
Phone
+98 21 4839 4134
Fax
Email
rahmanhoseini@atu.ac.ir

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
Allameh Tabataba'i University
Full name of responsible person
Dr Mandana TIshehyar
Street address
Central Campus of Allameh Tabatabaei University ,Village Square ,Olympic Village ,Tehran
City
Tehran
Province
Tehran
Postal code
۱۴۸۹۶۸۴۵۱۱
Phone
+98 21 4473 7561
Email
mandana.tishehyar@gmail.com
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Allameh Tabataba'i University
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
Allameh Tabataba'i University
Full name of responsible person
Rahman Sheikhhoseini
Position
Associatet professor
Latest degree
Ph.D.
Other areas of specialty/work
Physiotherapy
Street address
Faculty of Sport Sciences, AllamehTabataba'i University, Ali Daie Blv, Western Blv of Azadi sport Complex, Tehran, Iran
City
Tehran
Province
Tehran
Postal code
۱۴۸۹۶۸۴۵۱۱
Phone
+98 21 4839 4134
Email
rahman.pt82@gmail.com

Person responsible for scientific inquiries

Contact
Name of organization / entity
Allameh Tabataba'i university
Full name of responsible person
Rahman Sheikhhoseini
Position
Assistant prof
Latest degree
Ph.D.
Other areas of specialty/work
Physiotherapy
Street address
Physical education faculty, Allameh Tabataba'i University, Dehkade Olympic
City
Tehran
Province
Tehran
Postal code
1485743411
Phone
+98 21 4839 4134
Email
rahmanhoseini@atu.ac.ir

Person responsible for updating data

Contact
Name of organization / entity
entity Allameh Tabataba'i University
Full name of responsible person
Rahman Sheikhhoseini
Position
Assistant professor
Latest degree
Ph.D.
Other areas of specialty/work
Physiotherapy
Street address
Physical education faculty, Allameh Tabataba'i University, Dehkade Olympic
City
Tehran
Province
Tehran
Postal code
1485743411
Phone
+98 21 4839 4134
Email
rahmanhoseini@atu.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
Yes - There is 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
After the article is published, raw data without identifying the participants will be available by email to the corresponding author of the article.
When the data will become available and for how long
After the article is published, raw data without identifying the participants will be available by email to the corresponding author of the article.
To whom data/document is available
Any author who needs raw data, with a reason
Under which criteria data/document could be used
Any researcher can request data.
From where data/document is obtainable
By email to the responsible author
What processes are involved for a request to access data/document
By email to the responsible author
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