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CompletedNCT03872973Updated Dec 10, 2019

The Effect of Visual Input in Athletes With Chronic Ankle Instability

An interventional study of Neuromuscular Training and Strobe Glasses in Ankle Injuries, sponsored by Hacettepe University. Completed at 1 site in Turkey. Open to participants aged 18 Years to 23 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-12-10.

Sponsored by Hacettepe University · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
39
Allocation
Randomized
Ages
18 Years to 23 Years
Sex
All
01

Study summary

The aim of this study is to investigate the effect of neuromuscular training on balance by using stroboscopic glasses in athletes with chronic ankle instability.

Read the detailed description

Lateral ankle sprain (LAB) is one of the most common musculoskeletal injuries of 15% of all injuries reported in all sports.Chronic ankle instability (CAI) is characterized by life-long persistent symptoms in 40% of people with recurrent LAB sprain.

It has been reported that there is a change in sensorimotor function in the activity of individuals with CAI, and they are more dependent on visual information in balance parameters on one leg.While the somatosensory input was clinically feasible; The obstruction of the visual input has been limited in two ways, the eyes being fully open or fully enclosed.However, this changing dynamic has provided a means for the prevention of visual input during more sporty maneuvers, to directly reach compensatory neuroplastic sequelae after injury and to function in a functional way to train the neuromuscular system.This technological innovation makes this possible by reducing the visual input without completely eliminating it.This innovation, called stroboscopic goggles technology, provides a mechanism to disrupt to any degree between eyes closed and open in the visual system.

Stroboscopic vision, characterized by intermittent vision obstruction, can be a clinical tool that allows clinicians to study sensory feedback in a progressive manner without fully seeing visual information. So use stroboscopic goggles to prevent visual information, you can improve the functionality by emphasizing the somatosensor information.In particular, visual manipulations can significantly influence the healthy adult electrocortical dynamics and balance control by triggering the contradiction between visual adult, vestibular and proprioceptive inputs.

The aim of this study, which was planned for this purpose, will be to evaluate the effects of neuromuscular exercises performed on stroboscopic environment on equilibrium, neural feedback and running mechanics.

02

Conditions studied

  • Ankle Injuries

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Keywords

  • balance
  • chronic ankle instability
  • function
  • running
03

In context

Ankle Injuries

352 studies on the registry are indexed under Ankle Injuries; 71 are open to participants now.

This study's enrollment of 39 is below the median of 56 across 273 interventional studies indexed under Ankle Injuries.

Browse Ankle Injuries studies →

Lead sponsor

Hacettepe University is the lead sponsor of 983 studies on the registry; 212 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 23 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. To have at least 5 years active athletes in any sports branch.
  2. The first sprain history of individuals should be inflammatory symptoms (pain, swelling) at least 1 year before the study,
  3. Individuals should have unilateral ankle sprain,
  4. The newest sprain must have occurred 3 months before or after the date of commencement,
  5. Individuals must have at least 2 times a feeling of instability within 6 months,
  6. Individuals should not have any ankle fractures in the past
  7. Individuals should have undergone no surgical procedure to affect the sensorimotor function in the lower extremity.
  8. IDFAI (Identification of Functional Ankle Instability Questionare) score is above 11,
  9. FAAM (Foot and Ankle Ability Measure) score less than 90%,
  10. FAAM-S (Foot and Ankle Ability Measure Sport Scale) score should be less than 80%.

Exclusion criteria

Exclusion Criteria:

  1. Individuals who are not active athletes for at least 5 years in any sports branch.
  2. First sprain history of individuals with inflammatory symptoms (pain, swelling) at least 1 year before the study.
  3. The absence of unilateral ankle sprain by individuals.
  4. The most recent buckling is that it did not take place 3 months before or after the date of commencement.
  5. Individuals should not have a feeling of instability for at least 2 times within 6 months.
  6. People experience ankle fractures in the past.
  7. Individuals have undergone surgery to affect the sensorimotor function in the lower extremity.
  8. IDFAI (Identification of Functional Ankle Questionability) score not more than 11.
  9. FAAM (Foot and Ankle Ability Measure) score not less than 90%. FAAM-S (Foot and Ankle Ability Measure Sport Scale) score not less than 80%.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
39 participants (actual)

Study arms

  • Experimental
    Training Group

    Neuromuscular training will be performed in this group for 6 weeks.

    Other: Neuromuscular Training

  • Experimental
    Strobe Group

    This group will perform neuromuscular training for 6 weeks with a strobe glasses.

    Other: Neuromuscular Training · Other: Strobe Glasses

  • No intervention
    Control Group

    This group will not perform any neuromuscular training program.

Interventions

  • OtherNeuromuscular Training

    The experimental group will perform neuromuscular exercise for 6 weeks. The other experimental group will perform neuromuscular exercises with strobe glasses.

  • OtherStrobe Glasses

    Stroboscopic glasses, which is characterized by intermittent vision obstruction, is a clinical tool that allows clinicians to examine sensory feedback in a progressive manner without fully seeing visual information.

06

What researchers measure

Primary outcomes

  1. FAAM (Foot and Ankle Ability Measure),

    Pre-test evaluation will be done. After the end of neuromuscular training for 6 weeks, the final test will be evaluated. This value will be saved as %.

    Time frame: 8 weeks

  2. Ankle ROM

    The two bars of Optojump are placed on the treadmill with a speed of 3.5m / sec and the foot strokes, imbalance and heel strokes will be recorded and the normal joint movements of the ankle with the Myo-motion device will be recorded.

    Time frame: 2 weeks

  3. Balance

    Static and dynamic balances of athletes before and after neuromuscular training will be evaluated. Center of pressure area (COP) foot pressure point shall be evaluated in mm. And İt is defined as a measure indicative of the time and/or distance a subject spent away from a central point.

    Time frame: 2 weeks

  4. EEG (Electroencephalography)

    The theta and beta waveform of EEG values of people will be measured during the static and dynamic balance evaluation.

    Time frame: 2 weeks

  5. FAAM-S (Foot and Ankle Ability Measure Sport Scale)

    Pre-test evaluation will be done. After the end of neuromuscular training for 6 weeks, the final test will be evaluated. The Sports subscale is scored the same as FAAM (Foot and Ankle Ability Measure) 4 being 'no difficulty at all' to 0 being 'unable to do'. The score on each item are added together to get the item score total. The number of items with a response is multiplied by 4 to get the highest potential score. If the subject answers all 8 items the highest potential score is 32, if one item is not answered the highest potential score is 28, if two are not answered the highest potential score is 24, etc. The item score total is divided by the highest potential score. This value is multiplied by 100 to get a percentage. A higher score represents a higher level of physical function.

    Time frame: 8 weeks

  6. BMI (Body Mass Index)

    Body mass index will be calculated before neuromuscular training. It will be evaluated in kg/m2.

    Time frame: 2 weeks

07

Study locations

1 site
  • Serkan UZLAŞIR
    Nevşehir, Merkez 50300, Turkey
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 10, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03872973
Lead sponsor
Hacettepe University
Responsible party
Serkan Uzlaşır (Lecturer, Hacettepe University) — Principal investigator
First posted
Mar 13, 2019
Start date
Mar 5, 2019
Primary completion
Jun 10, 2019
Completion
Oct 12, 2019
Last update
Dec 10, 2019

Study contacts

Serkan UZLAŞIR
study director · Nevşehir Hacı Bektaş Veli University Sports Science Laboratory

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

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