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Quantification of Daily Physical ActivityThe influence of physical activity on the maintenance and adaptation of musculoskeletal tissue is difficult to assess. Cumulative musculoskeletal loading is hard to quantify and the attributes of the daily tissue loading history affecting bone metabolism have not been completely identified. By monitoring the vertical component of the daily ground reaction force (GRFz), we have an indirect measure of cumulative daily lower limb musculoskeletal loading to correlate with bone density and structure. The objective of this research is to develop instrumentation and methods of analysis to quantify activity level in terms of the daily history of ground reaction forces.
Document ID
Document Type
Conference Paper
Whalen, Robert (NASA Ames Research Center Moffett Field, CA United States)
Breit, Greg (NASA Ames Research Center Moffett Field, CA United States)
Quintana, Jason (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 20, 2013
Publication Date
January 1, 1994
Subject Category
Aerospace Medicine
Meeting Information
International Symposium on Physical Loading, Exercise and Bone(Iampere)
Funding Number(s)
PROJECT: RTOP 199-26-12-34
Distribution Limits
Work of the US Gov. Public Use Permitted.