Protocol summary
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Study aim
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The effect of jump-landing and strength training on performance, dynamic balance, and selected kinetic and kinematic factors of taekwondo athletes (Poomsae) with dynamic knee valgus
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Design
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A randomized, single-blind, parallel clinical trial study, 60 people were divided into two intervention groups and a control group, through web-based randomization.
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Settings and conduct
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After physician examination and review of inclusion/exclusion criteria, the patient's personal information was recorded and the consent form was signed. Participants were equally divided into three groups: jumping-landing exercises with strength exercises, without strength exercises, and a control group. This single-blinded study (outcome assessors blinded to interventions and grouping) was conducted at the Movement Analysis Laboratory, Faculty of Physical Education, Kharazmi University. Exercises were performed for 6 weeks, three sessions per week.
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Participants/Inclusion and exclusion criteria
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Inclusion Criteria:
· Cardiovascular and respiratory health
· Doctor's approval for research participation
· Dynamic knee valgus >12° (women) or >9° (men)
· Age 14–22 years with ≥3 years of Taekwondo experience
Exclusion Criteria:
· ACL rupture
· Subject withdrawal
· History of knee/lower limb injury or surgery in the past 6 months
· Lower limb orthopedic injuries or fractures in the past 6 months
· Participation in strength or jumping training programs in the past 6 months
· Missing two consecutive training sessions
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Intervention groups
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Jump-landing exercise group
Power jump-landing exercise group
Control group
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Main outcome variables
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Prevention of ACL injury, jump-landing,dynamic knee valgus
General information
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Reason for update
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Edit profile
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Acronym
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IRCT registration information
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IRCT registration number:
IRCT20240809062705N1
Registration date:
2024-09-07, 1403/06/17
Registration timing:
retrospective
Last update:
2026-05-23, 1405/03/02
Update count:
1
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Registration date
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2024-09-07, 1403/06/17
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Registrant information
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Recruitment status
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Recruitment complete
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Funding source
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Expected recruitment start date
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2024-04-21, 1403/02/02
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Expected recruitment end date
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2024-05-19, 1403/02/30
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Actual recruitment start date
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2024-04-21, 1403/02/02
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Actual recruitment end date
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2024-05-19, 1403/02/30
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Trial completion date
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2024-07-16, 1403/04/26
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Scientific title
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The effect of jump-landing exercises and strength exercises on performance improvement, dynamic balance and selected kinetic and kinematic factors of taekwondo athletes (Poomsae) with dynamic knee valgus defect
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Public title
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The effect of exercises on anterior cruciate ligament injury in taekwondo athletes
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Purpose
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Prevention
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Inclusion/Exclusion criteria
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Inclusion criteria:
Dynamic knee valgus
Taekwondo practitioners who have cardiovascular and respiratory health
Taekwondo players aged 14-22 years with at least three years of sports experience.
Exclusion criteria:
Rupture of the anterior cruciate ligament
Rupture of the anterior cruciate ligament
Taekwondo practitioners who avoid participating in the class for two consecutive sessions will be excluded from this research.
Orthopedic injuries and fractures in the lower limbs at least in the last 6 months
Taekwondo athletes who have participated in a strength training program and jumping in the past 6 months will be excluded from this study.
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Age
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From 14 years old to 22 years old
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Gender
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Both
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Phase
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N/A
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Groups that have been masked
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Sample size
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Target sample size:
60
Actual sample size reached:
57
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Randomization (investigator's opinion)
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Randomized
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Randomization description
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Randomization will be done by simple randomization individually and the sequence of random allocation will be determined using a computer program with the help of a web-based program (randomizer.org), by a member of the research team not involved in the selection of samples from sealed opaque envelopes with a random sequence will be used to conceal allocation. They will be assigned to two intervention groups and a control group.
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Blinding (investigator's opinion)
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Single blinded
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Blinding description
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In this study, the outcome assessor is blinded, meaning that he or she is unaware of the allocation of subjects to groups and which treatment intervention each group of subjects receives. This way, they do not make errors in their judgments in favor of a particular treatment intervention during the assessment before and after the protocol period.
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Placebo
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Not used
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Assignment
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Parallel
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Other design features
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Ethics committees
1
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Ethics committee
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Approval date
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2024-07-06, 1403/04/16
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Ethics committee reference number
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IR.KHU.REC.1403.057
Health conditions studied
1
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Description of health condition studied
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People prone to ACL injury
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ICD-10 code
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ICD-10 code description
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Primary outcomes
1
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Description
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Performance
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Timepoint
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Immediately before the intervention begins - Immediately after the intervention ends
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Method of measurement
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Single leg triple jump test
Secondary outcomes
1
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Description
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Dynamic balance
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Timepoint
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Immediately before the intervention begins - Immediately after the intervention ends
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Method of measurement
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Y balance test
2
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Description
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Selected kinetic and kinematic factors
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Timepoint
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Immediately before the intervention begins - Immediately after the intervention ends
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Method of measurement
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Single-leg landing test with motion capture and force plate
Intervention groups
1
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Description
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Intervention group 1: The first intervention is performing jump-landing exercises and strength exercises for 6 weeks and 3 sessions every week for 20 to 40 minutes.
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Category
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Rehabilitation
2
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Description
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Intervention group 2: The second intervention is performing jump-landing exercises for 6 weeks and 3 sessions every week for 20 to 40 minutes.
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Category
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Rehabilitation
3
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Description
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Control group: The control group did not receive any training
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Category
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Rehabilitation
1
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Sponsor
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Grant name
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Grant code / Reference number
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Is the source of funding the same sponsor organization/entity?
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Yes
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Title of funding source
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kharazmi university
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Proportion provided by this source
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50
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Public or private sector
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Public
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Domestic or foreign origin
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Domestic
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Category of foreign source of funding
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empty
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Country of origin
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Type of organization providing the funding
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Academic
Sharing plan
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Deidentified Individual Participant Data Set (IPD)
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Undecided - It is not yet known if there will be a plan to make this available
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Study Protocol
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Yes - There is a plan to make this available
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Statistical Analysis Plan
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Undecided - It is not yet known if there will be a plan to make this available
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Informed Consent Form
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Undecided - It is not yet known if there will be a plan to make this available
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Clinical Study Report
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Undecided - It is not yet known if there will be a plan to make this available
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Analytic Code
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Undecided - It is not yet known if there will be a plan to make this available
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Data Dictionary
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Undecided - It is not yet known if there will be a plan to make this available
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Title and more details about the data/document
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After coding the participants, their data can be shared.
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When the data will become available and for how long
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It is not possible to access the data for anyone except the researcher
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To whom data/document is available
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Researcher & supervisor
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Under which criteria data/document could be used
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Only writing articles in line with the thesis
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From where data/document is obtainable
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Researcher & supervisor
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What processes are involved for a request to access data/document
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The applicant clearly states the purpose of using the research data. After review and consideration by the supervisor, the final decision is notified to the applicant.
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Comments
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