The Effect of Five-Toed Socks on Postural Control Among Active Individuals Who Have Chronic Ankle Instabilities

Study Overview
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Brief Summary
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Lateral ankle sprain (LAS) is one of the most common injuries in sports. There is a unique style of socks that have become popular in Japan among athletes that could also improve postural control. The purpose of the study is to determine the effectiveness of five-toed socks on dynamic postural control in individuals with and without chronic ankle instability.

Detailed Description
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Lateral ankle sprain (LAS) is one of the most common injuries in sports. Ankle braces and orthotic insoles also have been shown to influence the neuromuscular control system by enhancing the proprioceptive and cutaneous afferent inputs to the central nerve system; thereby improving postural control. There is a unique style of socks that have become popular in Japan among athletes that could also improve postural control by enhancing cutaneous afferent inputs from the plantar surface of the foot and toes. The purpose of the study is to determine the effectiveness of five-toed socks on dynamic postural control in individuals with and without chronic ankle instability.

Official Title
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The Effect of Five-Toed Socks on Postural Control Among Active Individuals Who Have Chronic Ankle Instabilities

Conditions
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Lateral Ankle Sprain

Intervention / Treatment
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* Device: five-toed socks


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: member of university community All subjects will be physically active (at least 30 minutes of sustained exercise 3 times/week Exclusion Criteria: history of: knee or hip musculoskeletal injury or surgery history of: fracture or dislocation of the testing ankle or leg neurological problems vestibular disorders or concussions within the last 6 months

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Without Unilateral CAI<br> | Device: five-toed socks<br>* five-toed socks usage<br>|
| Active Comparator: With Unilateral CAI<br> | Device: five-toed socks<br>* five-toed socks usage<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Center of Pressure | The primary outcome measurement for this study will be to determine differences in Center of Pressure (COP) and static postural control patterns in individuals with and without CAI during the single limb balance test. Additionally, performance will be compared with eyes-open and eyes-closed. | separate testing days, one week apart | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| reaching distances | The secondary outcome measurement for this study will be to determine differences in the mean value of the three reaching distances (the anterior, posterior lateral, and posterior medial direction) of the SEBT in individuals with and without chronic ankle instability. | separate testing days, one week apart |