| Static Posturographic Characteristics during Balance Control under Virtual Moving Surround in Patients with Chronic Ankle Sprain. |
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An, Juha , Hwang, Ji Hye , Woo, Young Keun , Kim, Yun Hee , Lee, Peter K W , Kim, Nam Gyun |
1Department of Physical Medicine and Rehabilitation, Samsung Medical Center & Center for Clinical Medicine, Sungkyunkwan University School of Medicine, Korea. hwanglee@smc.samsung.co.kr
2Bioengineering Research Center for the Aged, Chonbuk National University, Korea. |
| 가상 환경 조건에서 만성 발목 염좌 환자의 정적 균형능력 특성 |
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안주하, 황지혜, 우영근, 김연희, 이강우, 김남균1 |
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성균관대학교 의과대학 재활의학교실 및 임상의학연구소, 1전북대학교 생체정보공학부 |
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| Abstract |
Objective
To investigate static posturographic characteristics during balance control under virtual moving surround (VMS) using force platform and head mount display (HMD) device in patients with chronic ankle sprain as compared with that of normal adults.
Method
Ten patients with chronic ankle sprain and 24 healthy adults participated. Center of pressure (COP) parameters were obtained for 20 seconds using force platform as total path distance and total sway area in following conditions (1) comfortable standing with opened and closed eyes, (2) VMS delivered using HMD with four different moving patterns. The virtual moving patterns composed of close-far, superior-inferior tilting (pitch), right-left tilting (roll) and horizontal rotation (yaw) movement.
Results
No significant difference was found between patients with chronic ankle sprain and healthy adults on comfortable standing with both open and closed eyes. But, patients revealed significantly increased total path distance and sway area of COP on all VMS conditions.
Conclusion
These results showed that under VMS conditions patients with the weaker balance control problem were more sensitive to balance control than simple comfortable standing conditions with opened and closed eyes. (J Korean Acad Rehab Med 2005; 29: 297-302) |
| Key Words:
Chronic ankle sprain, Posturography, Virtual moving surround |
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