Racial Differences in Gait Velocity in an Urban Elderly Cohort
Racial Differences in Gait Velocity in an Urban Elderly Cohort
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DOI：
10.1111/j.1532-5415.2012.03927.x
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发表时间：
2012-05-01
影响因子：
6.3
通讯作者：
Derby, Carol A.
中科院分区：
文献类型：
--
作者：
Blanco, Irene;Verghese, Joe;Derby, Carol A.
目的探讨老年人步态速度是否存在种族差异。设计：横断面分析。地点：纽约布朗克斯。参与者：213名参加爱因斯坦衰老研究的受试者（157名高加索人，56名非裔美国人），一项使用医疗保险和选民登记记录招募的社区居住老年人的纵向研究。结果白种人年龄较大（中位数79.9比75.5，P = 0.002），受教育程度较高（中位数14比12年，P = 0.007），体重指数较低（平均26.9 +/- 4.3比28.9 +/- 6.4，P = 0.03）。非裔美国人更可能是女性（80.4% vs 59.9%，P = 0.006）和糖尿病（28.6% vs 13.4%，P = 0.01）。白人和非裔美国人之间的疼痛水平没有显着差异。非裔美国人的步态速度明显较慢（平均90.2 +/- 17.9 vs 99.1 +/- 20.1 cm/s，P = .004）。在调整多个协变量后，这种差异仍然存在。已知的影响步态的共同因素的差异并不能解释一个7.79厘米/秒的步态速度较慢的非裔美国人比Caucasies.CONCLUSION差异的步态速度持续非洲裔美国人和高加索人之间，尽管调整了许多混杂因素。仅增加10 cm/s与较低的死亡率相关。需要进一步的研究来评估是否有可改变的风险因素可以解释这种差异，以及干预是否可以减少组间的差异。J Am Geriatr Soc 60：922-926，2012.
OBJECTIVES To investigate whether there are racial differences in gait velocity in elderly adults.DESIGN Cross-sectional analysis.SETTING Bronx, New York.PARTICIPANTS Two hundred thirteen participants of the Einstein Aging Study (157 Caucasian, 56 African American), a longitudinal study of community-residing elderly adults recruited using Medicare and voter registration records.MEASUREMENTS Demographic characteristics, medical history, Geriatric Depression Scale, Blessed InformationMemoryConcentration Test, Total Pain Index, gait velocity.RESULTS Caucasians were older (median 79.9 vs 75.5, P = .002) and more educated (median 14 vs 12 years, P = .007) and had lower body mass index (mean 26.9 +/- 4.3 vs 28.9 +/- 6.4, P = .03). African Americans were more likely to be female (80.4% vs 59.9%, P = .006) and to have diabetes mellitus (28.6% vs 13.4%, P = .01). Pain levels were not significantly different between Caucasians and African Americans. African Americans had a significantly slower gait velocity (mean 90.2 +/- 17.9 vs 99.1 +/- 20.1 cm/s, P = .004). This difference persisted after adjusting for multiple covariates. Differences in common factors known to influence gait did not explain a 7.79-cm/s slower gait speed in African Americans than Caucasians.CONCLUSION Differences in gait velocity persist between African Americans and Caucasians despite adjusting for many confounders. Increases of just 10 cm/s are associated with lower mortality. Further studies are needed to evaluate whether there are modifiable risk factors that may explain this difference and whether an intervention could reduce the discrepancy between the groups. J Am Geriatr Soc 60:922-926, 2012.