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Published on: March 7, 2019
Comparing quality-adjusted life expectancy at different levels of physical activity
Haomiao Jia1, Erica I Lubetkin
1Dept of Biostatistics, Columbia University, New York, NY.
Journal of Physical Activity & Health
|February 1, 2013
Summary
Engaging in regular physical activity significantly increases quality-adjusted life expectancy (QALE). Even moderate activity offers substantial benefits compared to being inactive, highlighting the importance of exercise for longevity.
Area of Science:
- Public Health
- Epidemiology
- Gerontology
Background:
- Physical activity is a key determinant of health, influencing both morbidity and mortality.
- Understanding the relationship between physical activity levels and life expectancy is crucial for public health initiatives.
Purpose of the Study:
- To compare quality-adjusted life expectancy (QALE) across different categories of physical activity.
- To quantify the impact of varying physical activity levels on health-adjusted longevity.
Main Methods:
- Utilized data from the 2001-2009 Behavioral Risk Factor Surveillance System to estimate health-related quality of life.
- Applied these quality of life estimates to life tables to calculate QALE for four physical activity groups: vigorous, moderate, leisure-time, and inactive.
Main Results:
- QALE at age 18 was highest for vigorous activity (58.4 years) and lowest for inactivity (47.0 years).
- Inactive individuals experienced a significant reduction in QALE compared to those engaging in some physical activity, with white females losing 9.2 years, followed by white males (7.8), Black females (6.7), and Black males (6.0).
Conclusions:
- Increased physical activity is associated with incremental improvements in both life expectancy and QALE.
- Findings support clinicians in patient motivation and inform public health officials on the value of physical activity promotion programs.
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