The Effects of Neuromodulation on the visual cortex in Individuals with Chronic Ankle Instability

The Effects of Neuromodulation on the visual cortex in Individuals with Chronic Ankle Instability - The Effects of Neuromodulation in Individuals with CAI

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000052760

Enrollment

Registered

2023-11-13

Start date

2023-11-20

Completion date

Unknown

Last updated

2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Individuals with Chronic Ankle Instability

Interventions

Applying transcranial static magnetic stimulation over the visual cortex (30 minutes) Applying sham stimulation over the visual cortex (30 minutes)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) A history of at least one severe ankle sprain resulting in unloading, immobilization, or abnormal walking. 2) A history of ankle sprain within the past three months before the experiment. 3) A history of at least two ankle sprains.

Exclusion criteria

Exclusion criteria: 1) Individuals with a history of lower limb fractures or surgeries, excluding ankle sprains, and with significant musculoskeletal injuries. 2) Individuals with a history of concussion. 3) Individuals with liver, kidney, heart diseases, respiratory disorders, endocrine disorders, metabolic disorders, neurological disorders, consciousness disorders, vestibular dysfunction, cardiovascular diseases, diabetes (as defined by the criteria of the Japan Diabetes Society), or other conditions (such as reflex impairment of peripheral blood vessels, acute inflammatory conditions, skin disorders, presence of infectious foci, malignant tumors) that make participation in the study difficult. 4) Individuals who have sustained lower limb injuries within the three months prior to the start of the experiment. 5) Individuals who do not consent to the purpose of the study as explained in the pre-trial briefing. 6) Individuals with non-removable magnetic objects in the head, including artificial inner ear devices, prosthetics, or clips. 7) Individuals with pacemakers and defibrillators implanted in the heart. 8) Individuals with metal allergies.

Design outcomes

Primary

Measure	Time frame
Dynamic stability: time to stabilization velocity of center of pressure, time to boundary minimia (mean and SD), average mean time for the clinical test of sensory and interaction test Romberg ratios and sensory organization strategies during single-leg balance	—

Secondary

Measure	Time frame
Survey of Previous Injuries Subjective ankle instability scale Functional ankle instability scale	—

Countries

Japan

Contacts

Public ContactShunya Nonoyama

Ritsumeikan University Faculty of Sport and Health Science

sh0181ek@ed.ritsumei.ac.jp080-4307-1777

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026