Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Otol Neurotol. 2010 Jan;31(1):168-72. doi: 10.1097/MAO.0b013e3181c4c3e2.
The purpose of this study was to assess the feasibility of a standardized gaze stabilization test (GST) as an indicator of vestibular function in community-dwelling older adults and to examine the relationship between gaze stabilization and physical performance.
Descriptive, cross-sectional.
Tertiary medical center.
Eighty-six healthy older adults (22 men) of mean (standard deviation [SD]) age 76.8 (5.8) years were recruited from the Pittsburgh community.
Performance on the GST, measures of physical performance (standing balance, chair rises, and gait speed individually and combined into the Short Physical Performance Battery) and self-reported balance.
Whereas more than 90% of participants completed testing in the pitch and yaw planes, only 85% (73 of 86) had interpretable scores due to prolonged perception time independent of vestibulo-ocular reflex. The mean (SD) head movement velocity in the pitch plane was 94.5 (26.7) degrees per second, whereas the mean (SD) head movement velocity in the yaw plane was 95.5 (29.3) degrees per second. There was a strong association between age and GST performance in the pitch and yaw planes (r = 0.68; p < 0.001). Poor GST performance in the yaw plane was associated with balance capacity with eyes closed. Additionally, there was a trend toward an association between self-reported balance and GST performance in both pitch (p = 0.08) and yaw planes (p = 0.10).
Although most older adults completed GST testing, estimates were not interpretable in almost 15% due to prolonged perception time. Gaze stabilization test in the yaw plane was worse than previously reported in healthy older adults and was associated with poor ability to balance with eyes closed. Self-reported balance tended to be associated with an objective assessment of vestibulo-ocular reflex in this population of older adults.
本研究旨在评估标准化凝视稳定性测试（GST）作为社区居住的老年人群前庭功能指标的可行性，并探讨凝视稳定性与身体表现之间的关系。
描述性，横断面研究。
三级医疗中心。
从匹兹堡社区招募了 86 名健康的老年人（22 名男性），平均（标准差[SD]）年龄为 76.8（5.8）岁。
GST 表现、身体表现（站立平衡、椅子上升和步态速度，单独和组合成短体物理表现电池）和自我报告的平衡。
尽管超过 90%的参与者在俯仰和偏航平面完成了测试，但由于与前庭眼反射无关的感知时间延长，只有 85%（86 名中的 73 名）具有可解释的分数。俯仰平面的头部运动速度平均值（SD）为 94.5（26.7）度/秒，而偏航平面的头部运动速度平均值（SD）为 95.5（29.3）度/秒。年龄与俯仰和偏航平面 GST 表现之间存在很强的关联（r = 0.68；p < 0.001）。偏航平面 GST 表现差与闭眼平衡能力有关。此外，自我报告的平衡与俯仰（p = 0.08）和偏航平面（p = 0.10）的 GST 表现之间存在趋势关联。
尽管大多数老年人完成了 GST 测试，但由于感知时间延长，几乎有 15%的测试结果无法解释。偏航平面的凝视稳定性测试比以前在健康老年人中报道的更差，与闭眼平衡能力差有关。在这个老年人群体中，自我报告的平衡倾向于与前庭眼反射的客观评估相关。
