The Effect of Visual Input in Athletes With Chronic Ankle Instability

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.

Inclusion criteria

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

Exclusion criteria

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