Is the effect of reported physical activity on disability mediated by cognitive performance in white and african american older adults?

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Bibliographic Details
Title: Is the effect of reported physical activity on disability mediated by cognitive performance in white and african american older adults?
Authors: Popa MA (AUTHOR), Reynolds SL (AUTHOR), Small BJ (AUTHOR)
Source: Journals of Gerontology Series B: Psychological Sciences & Social Sciences. Jan2009, Vol. 64B Issue 1, p4-13. 10p.
URL: 40507843
Database: Academic Search Ultimate
Description
ISSN:10795014
DOI:10.1093/geronb/gbn030