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NCT Number: NCT06551454

Smart Textile Solutions as Biofeedback Method for Injury Prevention for Latvian Football Youth League Players

Lower limb injuries are the most common in youth football leagues, accounting for 72% to 93% of all injuries. The leading prevention program in football today is the FIFA 11+ warm-up program, which reduces the risk of injury by 30%. Evidence from several studies confirms the addition of feedback during training reduces the incidence of injury by 40% . Recent studies have shown that the smart textile sock system is an objective, easy-to-use tool for real-time foot monitoring and is an interactive feedback tool for athletes. However, there is a lack of information on the impact of the objective feedback provided by the Smart Textile Sensor Socks System on the outcome measures of football players prevention programs. In the first phase of the project, a cross-sectional study involving youth league footballers will be conducted to identify the most effective feedback elements of the smart sock system. In the second phase, a pilot study will be conducted to evaluate the effectiveness of prevention exercises using the feedback provided by smart textile sensor socks. The results of the functional tests and the study outcomes will be selected as performance indicators to evaluate the smart textile sensor sock system. Conclusions on the use of the smart textile sensor sock system as a feedback method for injury prevention in Latvian Youth Football League players will be drawn based on the results obtained from the project.

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Key information

Conditions

Sport Injury

Age range

14 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Latvian Football Federation

Riga, LV-1013, Latvia

Location status: Recruiting

Location contact

Aleksandrs Okss, Dr.Habil.Sc.Ing.

PRINCIPAL_INVESTIGATOR

Aleksejs Katasevs, Dr.Sc.Ing.

PRINCIPAL_INVESTIGATOR

Alise Jonate, B.Sc.

SUB_INVESTIGATOR

Anna Davidovica, M.Sc.

PRINCIPAL_INVESTIGATOR

Guna Semjonova, Ph.D.

PRINCIPAL_INVESTIGATOR

Linda Lancere, Dr.Sc.Ing.

PRINCIPAL_INVESTIGATOR

Lydia Kamynina, B.Sc.

SUB_INVESTIGATOR

Sergejs Davidovics, M.Sc.

CONTACT

[email protected]

Signe Tomsone, Dr.Med.

PRINCIPAL_INVESTIGATOR

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • youth football league players;
  • agree to participate in the study;
  • age from 14 to 18 years;
  • understands and speaks Latvian.

Exclusion criteria

  • operative treatment in the lower limb within the last 9 months;
  • injuries or pain in the lower limb during the last 6 months;
  • disorders of the vestibular apparatus
  • presence of metallic implants in the sensor application areas.

Treatment and study plan

Smart Textile Solution Biofeedback Method

Device

The Smart Textile Solution Biofeedback Method for injury prevention in youth league football players integrates sensors within socks to monitor key biomechanical indicators such as center of pressure and plantar pressure of the foot in real-time. By providing immediate feedback and alerts on potential injury risks, the system helps players adjust their techniques during training sessions and prevent injuries during training and games.

Primary outcomes

  1. Foot plantar pressure changes during functional tasks (FIFA 11+; Part 2)

    Time frame: 12 weeks

    Data from the biofeedback method provided by the biofeedback DAid® smart sock system

  2. Functional Movement

    Time frame: 2 times: pre and post 12 week intervention

    Change of Functional Movement Screening (FMS™) Scores

Secondary outcomes

  1. Age

    Time frame: 1 time.

    Age in years

  2. Sex

    Time frame: 1 time

    Answers: male, female

  3. Foot size

    Time frame: 1 time

    By using In the Continental European system, where the shoe size is the length of the last, expressed in Paris points or 2⁄3 cm (6.67 mm), for both sexes and for adults and children alike. The Continental European system is used in Austria, Belgium, Denmark, France, Germany, Italy, Luxembourg, the Netherlands, Norway, Poland, Portugal, Spain, Sweden, Switzerland and most other continental European countries such as Latvia. The system is sometimes described as Stich size (from Pariser Stich, the German name for the Paris point), or Stichmaß size (from a German name of a micrometer for internal measurements). Shoe/ Stichmaß size 32 - 48.

  4. positions on football field

    Time frame: 1 time

    1 - Goalkeeper · 2 - Right Back · 3 - Left Back · 4 - Center Back · 5 - Center Back · 6 - Defensive Midfield · 7 - Right Wing/Forward · 8 - Central Midfield.

  5. User experience

    Time frame: Once - after 12 weeks of intervention

    Evaluated by System Usability Scale scale, user motivation intrinsic scale. The system usability scale (SUS) is a simple, ten-item attitude Likert scale giving a global view of subjective assessments of usability. The usability of a system, as defined by the ISO standard ISO 9241 Part 11, can be measured by taking into account the context of use of the system-i.e., who is using the system, what they are using it for, and the environment in which they are using it. Furthermore, measurements of usability have several different aspects: - effectiveness (can users successfully achieve their objectives); - efficiency (how much effort and resource is expended in achieving those objectives); - satisfaction (was the experience satisfactory). The formula for computing the final SUS score requires converting the raw scores, by subtracting 1 from each raw score, then utilizing the equation.

  6. Frequency of non-contact injuries (predicted number of injuries)

    Time frame: 1 year after 12-weeks intervention

    A one-year follow-up of records of the Frequency of non-contact injuries (predicted number of injuries)

Study contacts

Contact information is provided by the study sponsor or research team.

Anna Davidovica, M.H.Sc.

CONTACT

[email protected]

Guna Semjonova, Ph.D.

CONTACT

[email protected]

+37126035528

Sponsors and collaborators

Lead sponsor

Riga Stradins University

Other

Registry information

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Aug 13, 2024
Registry last updated
Oct 1, 2025

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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