Comparison of performance-based measures among native Japanese, Japanese-Americans in Hawaii and Caucasian women in the United States, ages 65 years and over: a cross-sectional study.
Comparison of performance-based measures among native Japanese, Japanese-Americans in Hawaii and Caucasian women in the United States, ages 65 years and over: a cross-sectional study.
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DOI：
10.1186/1471-2318-1-3
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发表时间：
2001-01-01
期刊：
影响因子：
4.1
通讯作者：
Takemoto, T
中科院分区：
文献类型：
--
作者：
Aoyagi, K;Ross, P D;Takemoto, T
背景技术：日本人（包括日本和夏威夷）的福尔斯和髋部骨折的发生率低于北美和欧洲的高加索人，但这些差异的原因尚不清楚。我们使用基于表现的测量方法比较了福尔斯的神经肌肉危险因素在日本的163名日本女性、夏威夷的681名日裔美国女性和美国的9403名65岁及以上的白人女性中进行了研究（椅子站立时间、通常和快速步行速度以及握力）。在调整年龄后，白人女性完成5个椅子站立所需的时间比任何一组日本人都多40%。高加索人的步行速度比日本土著人慢10%，而夏威夷的日裔美国妇女的步行速度比日本土著人快11%。日本的握力最大，这可能反映了该样本所来自的农村农业区。额外调整身高，体重或体重指数增加调整后的平均椅子站立时间和握力在日本人，但差异仍然显着。结论：无论是本土日本和日裔美国妇女在夏威夷的椅子站立时间和步行速度测试比白人表现更好，和本土日本人有更大的握力比日本人在夏威夷和白人。这些性能差异的生物学意义尚不确定，但可能有助于规划未来的人群之间的比较。
BACKGROUND: Japanese (both in Japan and Hawaii) have a lower incidence of falls and of hip fracture than North American and European Caucasians, but the reasons for these differences are not clear.SUBJECTS AND METHODS: A cross-sectional study. We compared neuromuscular risk factors for falls using performance-based measures (chair stand time, usual and rapid walking speed, and grip strength) among 163 Japanese women in Japan, 681 Japanese-American women in Hawaii and 9403 Caucasian women in the United States aged 65 years and over.RESULTS: After adjusting for age, the Caucasian women required about 40% more time to complete 5 chair stands than either group of Japanese. Walking speed was about 10% slower among Caucasians than native Japanese, whereas Japanese-American women in Hawaii walked about 11% faster than native Japanese. Grip strength was greatest in Japan, which may reflect the rural farming district that this sample was drawn from. Additional adjustment for height, weight or body mass index increased the adjusted means of chair stand time and grip strength among Japanese, but the differences remained significant.CONCLUSIONS: Both native Japanese and Japanese-American women in Hawaii performed better than Caucasians on chair stand time and walking speed tests, and native Japanese had greater grip strength than Japanese in Hawaii and Caucasians. The biological implications of these differences in performance are uncertain, but may be useful in planning future comparisons between populations.