Physical activity and quality of life in older adults: an 18-month panel analysis
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Although physical activity has been associated with quality of life (QOL), the empirical evidence regarding the mechanisms underlying this relationship is limited. In the present study, we examined the mediating roles played by self-efficacy and health status in the physical activity–QOL relationship from baseline to 18-month follow-up in a sample of community-dwelling older adults.
Community-dwelling adults (N = 321, M age = 63.8 years) were recruited to participate in a cross-sectional study and were later contacted to participate in an 18-month follow-up. Individuals completed a battery of questionnaires assessing physical activity, self-efficacy, physical self-worth, disability limitations, and quality of life. A panel analysis within a covariance modeling framework was used to analyze the data.
Overall, the model was a good fit to the data (χ2 = 61.00, df = 29, p < 0.001, standardized root mean residual = 0.05, Comparative Fit Index = 0.97) with changes in physical activity indirectly influencing change in life satisfaction from baseline to 18 months via changes in exercise self-efficacy, physical self-worth, and disability limitations independent of baseline relationships and demographic factors. Specifically, increases in physical activity were associated with increases in exercise self-efficacy which, in turn, was associated with higher physical self-worth and fewer disability limitations which were associated with greater life satisfaction.
The findings from this study suggest the relationship between physical activity and global QOL in older adults may be mediated by more proximal modifiable outcomes that can be targeted in physical activity programs and interventions.
KeywordsPhysical activity Quality of life Self-efficacy Older adults
- 1.U.S. Census Bureau. (2008). Table 2: Projections of the population. National population projections, 2008. http://www.census.gov/population/www/projections/summarytables.html.
- 2.Nelson, M. E., Rejeski, W. J., Blair, S. N., Duncan, P. W., Judge, J. O., King, A. C., et al. (2007). Physical activity and public health in older adults: Recommendation from the American College of Sports Medicine and the American Heart Association. Circulation, 116, 1094–1105.PubMedCrossRefGoogle Scholar
- 3.Chodzko-Zajko, W. J., Proctor, D. N., Fiatarone Singh, M. A., Minson, C. T., Nigg, C. R., Salem, G. J., et al. (2009). American College of sports medicine position stand. Exercise and physical activity for older adults. Medicine and Science in Sports and Exercise, 30, 992–1008.Google Scholar
- 5.Rejeski, W. J., & Mihalko, S. L. (2001). Physical activity and quality of life in older adults. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences., 277, 64–66.Google Scholar
- 7.Trine, M. (1999). Physical activity and quality of life. In J. Rippe (Ed.), Lifestyle medicine (pp. 989–997). Malden, MA: Blackwell Science.Google Scholar
- 9.Stewart, A., & King, A. (1991). Evaluating the efficacy of physical activity for influencing quality of life outcomes in older adults. Annals of Behavioral Medicine, 13(3), 108–116.Google Scholar
- 12.White, S. M., Wójcicki, T. R., & McAuley, E. (2009). Physical activity and quality of life in community dwelling older adults. Health and Quality of Life Outcomes. doi:10.1186/1477-7525-7-10.
- 20.McAuley, E., Konopack, J. F., Motl, R. W., Rosengren, K., & Morris, K. S. (2005). Measuring disability and function in older women: Psychometric properties of the late-life function and disability instrument. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 60, 901–909.CrossRefGoogle Scholar
- 21.Fox, K. R., & Corbin, C. B. (1989). The physical self-perception profile: Development and preliminary validation. Journal of Sport & Exercise Psychology, 11, 408–430.Google Scholar
- 26.IBM. (1989–2010). SPSS statistics (version 19.0). Chicago, IL: IBM.Google Scholar
- 27.Muthén, L. K., & Muthén, B. O. (1998–2011). Mplus (version 6.0). Los Angeles, CA: Muthén & Muthén.Google Scholar
- 28.Arbukle, J. L. (1996). Full information estimation in the presence of incomplete data. In G. A. Marcoulide & R. E. Schumacker (Eds.), Advanced structural equation modeling: Issues and techniques (pp. 243–278). Mahwah: Lawrence Erlbaum Associates.Google Scholar
- 31.Kessler, R. C., & Greenberg, D. F. (1981). Linear panel analysis: Models of quantitative change. New York: Academic Press.Google Scholar
- 33.Browne, M. W., & Cudeck, R. (1993). Alternative ways of assessing model fit. In K. A. Bollen & J. S. Long (Eds.), Testing structural equation models (pp. 136–162). Newbury Park: Sage.Google Scholar
- 43.Centers for Disease Control and Prevention. (2010). Physical activity resources for health professionals. http://www.cdc.gov/physicalactivity/professionals/data/index.html.