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Dose response relationships between physical activity, walking and health-related quality of life in mid-age and older women

Heesch, Kristiann, van Uffelen, Jannique G.Z., van Gellecum, Yolanda R., & Brown, Wendy J. (2012) Dose response relationships between physical activity, walking and health-related quality of life in mid-age and older women. Journal of Epidemiology and Community Health, 66, pp. 670-677.

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Abstract

Background
Although physical activity is associated with health-related quality of life (HRQL), the nature of the dose-response relationship remains unclear. This study examined the concurrent and prospective dose-response relationships between total physical activity (TPA) and (only) walking with HRQL in two age cohorts of women.

Methods
Participants were 10,698 women born in 1946-1951 and 7,646 born in 1921-1926, who completed three mailed surveys for the Australian Longitudinal Study on Women's Health. They reported weekly TPA minutes (sum of walking, moderate, and vigorous minutes). HRQL was measured with the Medical Outcomes Study Short-Form 36 Health Status Survey (SF-36). Linear mixed models, adjusted for socio-demographic and health-related variables, were used to examine associations between TPA level (none, very low, low, intermediate, sufficient, high, and very high) and SF-36 scores. For women who reported walking as their only physical activity, associations between walking and SF-36 scores were also examined.

Results Curvilinear trends were observed between TPA and walking with SF-36 scores. Concurrently, HRQL scores increased significantly with increasing TPA and walking, in both cohorts, with increases less marked above sufficient activity levels. Prospectively, associations were attenuated although significant and meaningful improvements in physical functioning and vitality were observed across most TPA and walking categories above the low category.

Conclusion
For women in their 50s-80s without clinical depression, greater amounts of TPA are associated with better current and future HRQL, particularly physical functioning and vitality. Even if walking is their only activity, women, particularly those in their 70s-80s, have better health-related quality of life.

Impact and interest:

9 citations in Scopus
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11 citations in Web of Science®

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ID Code: 49591
Item Type: Journal Article
Additional URLs:
Keywords: cohort studies, exercise, longitudinal, quality of life, mental health
DOI: 10.1136/jech-2011-200850
ISSN: 0143-005X
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Public Health & Social Work
Copyright Owner: Copyright 2012 BMJ Publishing Group
Deposited On: 10 Apr 2012 22:02
Last Modified: 06 Jan 2013 23:58

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