| 英文摘要 |
Introduction:Walking is one of essential movements in daily life. However, elderly often fall down during walking. Walking is considered as a condition that elderly is moving while other objects are still. In this case, dynamic visual acuity would be influence on correction and prescription of detecting useful information. Furthermore, dynamic visual acuity is a critical factor to keep balance during walking. It easily causes elderly fall when walking velocity is faster that visual function deal with information. Therefore, the purpose of this study was to investigate the changes on dynamic visual acuity and walking velocity with aging in elderly who above 65 years old. Methods:Sixty elderly who could walk normally were as participants in this study. The Visual System, a JVC high-speed camera, and the Siliconcoach motion analysis software were used to measure vision ability and walking velocity. Results:The results revealed that dynamic visual acuity, comfortable walking velocity, and fastest walking velocity decreased by ageing. The decline of dynamic visual acuity was greater than those of comfortable walking velocity and fastest walking velocity when elderly was above age of 77 (p<.05). It showed that dynamic visual acuity might not responded accurately to walking demand at 77 years old. Conclusion:It concluded that dynamic visual acuity and walking velocity decreased while age increasing in elderly as 65-82 years old. The decline of dynamic visual acuity greater than those of comfortable walking velocity and fastest walking velocity. In order to enhance safety of walking or reduce risk of falling, the elderly who over 77 years old should maintain the dynamic visual acuity or walking slower. |
