Visual Utilization after a Single Session of Virtual Reality-Based Training in Patients with Chronic Ankle Instability
Advisor Information
Christopher Burcal
Location
MBSC 201
Presentation Type
Poster
Start Date
6-3-2020 10:45 AM
End Date
6-3-2020 12:00 PM
Abstract
Visual Utilization after a Single Session of Virtual Reality-Based Training in Patients with Chronic Ankle Instability Chronic ankle instability(CAI) is one of the most common injuries caused by an initial ankle sprain. Individuals with chronic ankle instability had diverse problems, especially balance deficits. CAI patients showed altered reweighting strategy compared to uninjured controls and relied more on a vision for the balance due to the impaired somatosensation which causes postural control deficits. This may suggest that a decreased somatosensory capability and high tendency toward relying on visual cues results in a more permanent alteration in the sensory reweighting system. To rehabilitate and train patients with the balance deficit, conventional static single limb balance tests are commonly utilized such as Balance Error Scoring System(BESS) and Star Excursion Balance Test(SEBT). However, there were limitation to detect postural control deficit, because it was not adequate to perturb visual sensory. As a result, a virtual reality, providing inconstant visual image, began to emerge to compensate for drawbacks of traditional ways. Human motor system has the ability to learn through repetitive practice and experience. Recently, this theory was applied to clinical rehabilitation to improve the protocols. Understanding the link between relative weighing sensory feedback in people with CAI and motor learning will help to improve future rehabilitation methods for those with CAI. Therefore, the aim of this study is (1) to demonstrate if people acquire ability to reweigh visual information after the VR intervention and (2) to identify differences in responsiveness of VR intervention between individuals with CAI and uninjured controls. 30 participants, 15 each of controls and CAI participants will participate. Participants will be 19 to 35 years old. CAI participants will have more than one ankle sprain, a Cumberland Ankle Instability Tool (CAIT) score of, and a Foot and Ankle Ability Measure (FAAM); activities of daily living subscale < 90%, Sport subscale < 80%. Uninjured controls will not have any history of ankle sprain. Participants will come to a pre-test session and complete double leg balance under 3 conditions: eyes-open, eyes-closed, and watching a virtual reality roller coaster; they will also complete single leg balance on the right and left legs under eyes-open and eyes-closed conditions. One week after the pre-test, intervention protocol will be completed by participants. For intervention, the subjects will be instructed to stand with both of their legs on a foam pad on the force platform while watching the rollercoaster game in VR. Analyses of variance (ANOVA) will be utilized to determine significant differences among the center of pressure(COP) and Time to Boundary(TTB) between uninjured control and CAI participants.
Visual Utilization after a Single Session of Virtual Reality-Based Training in Patients with Chronic Ankle Instability
MBSC 201
Visual Utilization after a Single Session of Virtual Reality-Based Training in Patients with Chronic Ankle Instability Chronic ankle instability(CAI) is one of the most common injuries caused by an initial ankle sprain. Individuals with chronic ankle instability had diverse problems, especially balance deficits. CAI patients showed altered reweighting strategy compared to uninjured controls and relied more on a vision for the balance due to the impaired somatosensation which causes postural control deficits. This may suggest that a decreased somatosensory capability and high tendency toward relying on visual cues results in a more permanent alteration in the sensory reweighting system. To rehabilitate and train patients with the balance deficit, conventional static single limb balance tests are commonly utilized such as Balance Error Scoring System(BESS) and Star Excursion Balance Test(SEBT). However, there were limitation to detect postural control deficit, because it was not adequate to perturb visual sensory. As a result, a virtual reality, providing inconstant visual image, began to emerge to compensate for drawbacks of traditional ways. Human motor system has the ability to learn through repetitive practice and experience. Recently, this theory was applied to clinical rehabilitation to improve the protocols. Understanding the link between relative weighing sensory feedback in people with CAI and motor learning will help to improve future rehabilitation methods for those with CAI. Therefore, the aim of this study is (1) to demonstrate if people acquire ability to reweigh visual information after the VR intervention and (2) to identify differences in responsiveness of VR intervention between individuals with CAI and uninjured controls. 30 participants, 15 each of controls and CAI participants will participate. Participants will be 19 to 35 years old. CAI participants will have more than one ankle sprain, a Cumberland Ankle Instability Tool (CAIT) score of, and a Foot and Ankle Ability Measure (FAAM); activities of daily living subscale < 90%, Sport subscale < 80%. Uninjured controls will not have any history of ankle sprain. Participants will come to a pre-test session and complete double leg balance under 3 conditions: eyes-open, eyes-closed, and watching a virtual reality roller coaster; they will also complete single leg balance on the right and left legs under eyes-open and eyes-closed conditions. One week after the pre-test, intervention protocol will be completed by participants. For intervention, the subjects will be instructed to stand with both of their legs on a foam pad on the force platform while watching the rollercoaster game in VR. Analyses of variance (ANOVA) will be utilized to determine significant differences among the center of pressure(COP) and Time to Boundary(TTB) between uninjured control and CAI participants.