Using Heart Rate and Accelerometry to Define Quantity and Intensity of Physical Activity in Older Adults.

ABSTRACT: Background:Physical activity (PA) prevents disease and promotes longevity; yet, few older adults meet the recommended daily guidelines. Wearable PA and heart rate monitors provide the opportunity to define age-related differences in the absolute and relative intensity of daily activities, and provide insight into the underlying factors influencing PA in older adults. Methods:Participants in the Baltimore Longitudinal Study of Aging (n = 440, 52% male, aged 31 to 88 years) completed a clinical assessment and wore an Actiheart monitor in the free-living environment. The association between age and minutes per day in sedentary, light, moderate, and vigorous PA was assessed using relative intensity, as defined by heart rate reserve, and absolute intensity using activity count thresholds. Resul

SUBMITTER: Schrack JA 

PROVIDER: S-EPMC5905658 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature