Background: Studies have reported declines with age in cognitive or physical functioning, but rarely identify whether these are parallel or linked events in the same study. Furthermore, most research in this area has focused on persons in late life rather than midlife. Objective: The objective of the study was to determine (1) if cognitive functioning was related to physical functioning and whether this relationship persisted after adjustment for age, menopause status, metabolic status, depression and socioeconomic resources, and (2) if changes in physical functioning were associated with changes in cognitive functioning over a 4-year follow-up period. Methods: Data were from the Study of Women’s Health Across the Nation (SWAN), a multi-site, longitudinal study of women aged 46–56 years at follow-up examination 4. Three follow-up examinations (study years 04, 06 and 08) included measures of physical functioning perception (MOS SF-36) and cognitive functioning [Symbol Digit Modality Test (SDMT), Digit Span Backward Test (DSBT), and East Boston Memory Test (EBMT)] (n = 2,405). Results: Women with lower cognitive functioning scores also had lower perceived physical functioning scores. While adjustment for covariates attenuated the association between perceived physical functioning and both the SDMT and EBMT cognitive measures, these associations remained statistically significant. Additionally, the 4-year change in perceived physical functioning was significantly associated with the 4-year change in the EBMT. Conclusions: At midlife, there were associated declines in cognitive and perceived physical functioning scores, commencing at midlife in women.
© 2009 S. Karger AG, Basel
- Physical functioning
- Cognitive functioning
- Metabolic syndrome
- MOS SF-36
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Department of Epidemiology
University of Michigan
Ann Arbor, MI 48104 (USA)
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Received: November 18, 2008
Accepted: April 20, 2009
Published online: October 10, 2009
Number of Print Pages : 9
Number of Figures : 1, Number of Tables : 4, Number of References : 40
Gerontology (International Journal of Experimental, Clinical, Behavioural and Technological Gerontology)
Vol. 56, No. 3, Year 2010 (Cover Date: April 2010)
Journal Editor: Wick G. (Innsbruck)
ISSN: 0304-324X (Print), eISSN: 1423-0003 (Online)
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