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Completed

NCT Number: NCT07650006

AI-Based Hamstring Injury Risk Analysis and Effects of the FUNBALL Program

This study investigates hamstring injury risk in football players using artificial intelligence-based motion analysis (OpenPose) and evaluates the effects of a targeted exercise intervention (FUNBALL). Hamstring risk is assessed during a 30-m sprint using sagittal-plane video analysis, and players classified as medium or high risk receive a four-month FUNBALL program. A pre-post intervention design is employed, with sprint performance, agility, balance, jumping ability, kicking power, and cognitive function assessed using standardized field and cognitive tests.

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Key information

Conditions

Healthy Healthy Adult Male

Age range

18 year–35 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Istanbulspor Ömer Sarıalioglu Football Team Facilitu

Istanbul, Büyükçekmece, 34537, Turkey (Türkiye)

About this study

Before the implementation of the FUNBALL program, artificial intelligence (OpenPose) based hamstring risk analysis and 30-meter sprint test, 505 agility and direction change test, modified star balance test, 5-point jump test, maximum shot distance test and cognition tests will be applied as pre-tests (18,19). AI risk analysis will be done by examining video (30 frame rate) captured with a phone camera (iPhone 14 Pro) from the sagittal (side) plane during the 240 m sprint test. The camera will be positioned 15 meters from the level of the middle of the 30-meter sprint test with the help of a tripod. It will follow the participant's run for 30 meters in motion. The football player will be asked to do a 30 m sprint with 3 repetitions and the average of 3 repetitions will be taken as a basis. According to the artificial intelligence risk analysis, the FUNBALL program will be applied to medium and high risk groups for 4 months. At the end of the Middle Program, the same parameters will be re-evaluated. Hamstring risk analysis and speed parameter will be evaluated with 30 meter sprint test, agility parameter 505 with direction change and agility test, cognition parameter with color word stroop test, n-back test and digit span test, balance and proprioception parameter with modified star balance test, jump parameter with 5-point jump test, and power parameter with maximum shot distance test.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • To be a professional football player between the ages of 18-35.
  • Not having a history of ligament, joint, bone, muscle or tendon injury that requires at least 2 months away from the field in the last 6 months.
  • Not having an active disability.
  • To have verbal and written communication skills who accept to participate in the study voluntarily and to perform exercise applications.

Exclusion criteria

  • Presence of an active disability
  • Having a history of ligament, joint, bone, muscle or tendon injury that requires at least 2 months away from the field in the last 6 months.
  • Vestibular or disconnected vision problems
  • History of cancer
  • Illiteracy
  • Mental and cognitive disorders that may affect communication

Treatment and study plan

FUNBALL Prevention Program

Other

The FUNBALL Prevention Program is an evidence-based injury prevention exercise program described in the literature. The program was developed by Obertinca et al. and has been shown to reduce thigh muscle injury incidence by approximately 38% in football players. In the present study, the FUNBALL program is implemented as a structured training intervention aimed at reducing hamstring injury risk.

Primary outcomes

  1. Number of Participants Classified as High Hamstring Injury Risk by OpenPose-Based Biomechanical Analysis

    Time frame: Baseline (Day 0) and post-intervention (Week 12)

    Outcome measure: Number of participants classified as high hamstring injury risk. Assessment tool: OpenPose-based biomechanical motion analysis of a 30-meter sprint. Classification is based on hip flexion angle, knee extension angle, and terminal swing phase mechanics. Unit of measure: Number of participants classified as high risk.

Secondary outcomes

  1. 505 COD Agility Test

    Time frame: Baseline (Day 0) and post-intervention (Week 12)

    The 505 Change of Direction (COD) test is a widely used field-based assessment designed to evaluate an athlete's ability to decelerate, rapidly change direction, and re-accelerate over a short distance. The players are going to sprint forward 10 m, perform a 180-degree turn off a designated foot at the 5-m mark, and sprint back as quickly as possible, with total time is going to record using electronic timing gates or a stopwatch.

  2. Number of Players With Elevated Hamstring Injury Risk During Sprint Testing

    Time frame: Baseline (Day 0) and post-intervention (Week 12)

    The primary outcome will be the number of players identified with elevated hamstring injury risk during a 30-m sprint test, assessed using an artificial intelligence-based movement analysis.

  3. N-Back Task Accuracy (%)

    Time frame: Baseline (Day 0) and Post-Intervention (Week 12)

    Working memory performance assessed using a computerized N-Back task and reported as percentage accuracy (%).

  4. Digit Span Total Score

    Time frame: Baseline (Day 0) and Post Intervention (Week 12)

    Total number of correctly recalled digits during a computerized Digit Span task.

  5. Composite Reach Distance in Modified Star Excursion Balance Test

    Time frame: Baseline ( Day 0) and Post-Intervention (Week 12)

    Composite normalized reach distance during the Modified Star Excursion Balance Test.

  6. Horizontal Distance in Multiple Five Bounds Test

    Time frame: Baseline (Day 0) and Post-Intervention (Week 12)

    Horizontal distance achieved during the Multiple Five Bounds Test assessing horizontal power.

  7. Maximal Soccer Ball Kicking Distance

    Time frame: Baseline (Day 0) and Post-Intervention (Week 12)

    Maximum horizontal distance of a soccer ball following a maximal instep kick.

  8. Stroop Reaction Time

    Time frame: Baseline (Day 0) and Week 12

    Mean reaction time during incongruent trials of a computerized Stroop task.

Sponsors and collaborators

Lead sponsor

Yeditepe University

Other

Registry information

Official study title

AI-Based Hamstring Injury Risk Analysis and the Effects of the FUNBALL Program on Physical Performance and Cognitive Function in Professional Football Players

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Jun 16, 2026
Registry last updated
Jun 16, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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