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Ethnic Differences in Bending Stiffness of the Ulna and TibiaThere is considerable information about the variations in bone mass associated with different opportunity to compare a mechanical property of bone in young college women of Caucasian, Hispanic and Asian descent who gave informed consent to participate in an exercise study. The subjects were sedentary, in good health, eumenorrheic, non-smokers and had body mass indices (BMI) less than 30. Measurements acquired were body weight, kg, and height, cm, calcaneal and wrist bone density, g/square cm (PIXI, Lunar GE) and bending stiffness (EI, Nm(exp 2)) in the ulna and tibia. E1 was determined non-invasively with an instrument called the Mechanical Response Tissue Analyzer (MRTA) that delivers a vibratory stimulus to the center of the ulna or tibia and analyzes the response curve based on the equation E1 = k(sub b) L(exp 3)/48 where k, is lateral bending stiffness, L is the length of the bone, E is Young's modulus of elasticity and I, the bending moment of inertia. The error of the test (CV) based on measurements of an aluminum rod with a known E1 was 4.8%, of calcaneal BMD, 0.54%, and of wrist bone density, 3.45%.
Document ID
20040086889
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Arnaud, S. B.
(NASA Ames Research Center Moffett Field, CA, United States)
Liang, M. T. C.
(California State Polytechnic Univ. Pomona, CA, United States)
Bassin, S.
(California State Polytechnic Univ. Pomona, CA, United States)
Braun, W.
(California State Polytechnic Univ. Pomona, CA, United States)
Dutto, D.
(California State Polytechnic Univ. Pomona, CA, United States)
Plesums, K.
(California State Polytechnic Univ. Pomona, CA, United States)
Huvnh, H. T.
(California State Polytechnic Univ. Pomona, CA, United States)
Cooper, D.
(California Univ. Irvine, CA, United States)
Wong, N.
(California Univ. Irvine, CA, United States)
Date Acquired
August 21, 2013
Publication Date
May 11, 2004
Subject Category
Aerospace Medicine
Report/Patent Number
Rept-04-A-586-ASBMR
Meeting Information
Meeting: American Society for Bone and Mineral Research 26th Annual Meeting
Location: Seattle, WA
Country: United States
Start Date: October 1, 2004
End Date: October 5, 2004
Sponsors: American Society for Bone and Minerarl Research
Funding Number(s)
CONTRACT_GRANT: NIH-SO6-GM053933-06
CONTRACT_GRANT: NASA-SAA2-401535
Distribution Limits
Public
Copyright
Public Use Permitted.
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