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Accelerometer-assessed light-intensity physical activity and mortality among those with mobility limitations
Emily Frith1, Paul D Loprinzi2
1Physical Activity Epidemiology Laboratory, Exercise Psychology Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS 38677, USA.
Disability and Health Journal
|September 8, 2017
Summary
Increasing light-intensity physical activity by 60 minutes daily significantly reduces all-cause mortality by 14% in adults with mobility limitations. This highlights the health benefits of light activity for this population.
Area of Science:
- Public Health
- Gerontology
- Exercise Science
Background:
- Light-intensity physical activity (LIPA) shows positive health associations in the general population.
- LIPA benefits may extend to specific subgroups, independent of vigorous activity.
Purpose of the Study:
- To investigate the link between accelerometer-measured LIPA and mortality risk.
- Focus on American adults experiencing mobility limitations.
Main Methods:
- Utilized National Health and Nutrition Examination Survey data (2003-2006, follow-up to 2011).
- Included 1369 participants with self-reported mobility limitations.
- Assessed LIPA using waist-mounted accelerometry.
Main Results:
- The study observed 108,010 person-months with an all-cause mortality rate of 2.07 per 1000 person-months.
- Each 60-minute daily increase in LIPA was associated with a 14% reduced risk of all-cause mortality (HR=0.86; 95% CI: 0.75-0.98; P=0.03) after adjustments.
- This association was statistically significant.
Conclusions:
- Findings emphasize the critical role of LIPA for individuals with mobility challenges.
- Promoting LIPA is a viable strategy to improve health outcomes and reduce mortality in this demographic.
