Journal
JOURNAL OF THE AMERICAN HEART ASSOCIATION
Volume 6, Issue 12, Pages -Publisher
WILEY
DOI: 10.1161/JAHA.117.007215
Keywords
accelerometry; aging; cardiovascular; physical activity
Categories
Funding
- National Institutes of Health/National Institute on Aging [U01 AG22376]
- National Heart, Lung, and Blood Institute [3U01AG022376-05A2S]
- Intramural Research Program, National Institute on Aging, NIH
- Claude D. Pepper Older Americans Independence Centers at the University of Florida [1 P30 AG028740]
- Tufts University [1P30AG031679]
- University of Pittsburgh [P30 AG024827]
- Wake Forest University [P30AG021332]
- Yale University [P30AG021342]
- NIH/NCRR CTSA at Stanford University [UL1 RR025744]
- Boston Rehabilitation Outcomes Center [1R24HD065688-01A1]
- Academic Leadership Award from the National Institute on Aging [K07AG3587]
- Career Development Award from the Department of Veterans Affairs
- US Department of Agriculture [58-1950-0-014]
Ask authors/readers for more resources
Background-Data are sparse regarding the value of physical activity (PA) surveillance among older adults-particularly among those with mobility limitations. The objective of this study was to examine longitudinal associations between objectively measured daily PA and the incidence of cardiovascular events among older adults in the LIFE (Lifestyle Interventions and Independence for Elders) study. Methods and Results-Cardiovascular events were adjudicated based on medical records review, and cardiovascular risk factors were controlled for in the analysis. Home-based activity data were collected by hip-worn accelerometers at baseline and at 6, 12, and 24 months postrandomization to either a physical activity or health education intervention. LIFE study participants (n=1590; age 78.9 +/- 5.2 [SD] years; 67.2% women) at baseline had an 11% lower incidence of experiencing a subsequent cardiovascular event per 500 steps taken per day based on activity data (hazard ratio, 0.89; 95% confidence interval, 0.84-0.96; P=0.001). At baseline, every 30 minutes spent performing activities >= 500 counts per minute (hazard ratio, 0.75; confidence interval, 0.65-0.89 [P=0.001]) were also associated with a lower incidence of cardiovascular events. Throughout follow-up (6, 12, and 24 months), both the number of steps per day (per 500 steps; hazard ratio, 0.90, confidence interval, 0.85-0.96 [P=0.001]) and duration of activity >= 500 counts per minute (per 30 minutes; hazard ratio, 0.76;confidence interval, 0.63-0.90 [P=0.002]) were significantly associated with lower cardiovascular event rates. Conclusions-Objective measurements of physical activity via accelerometry were associated with cardiovascular events among older adults with limited mobility (summary score > 10 on the Short Physical Performance Battery) both using baseline and longitudinal data.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available