Commonly used measures of physical activity (PA) fail to account for heterogeneity in maximal capacity between individuals. Utilizing the concept of heart rate reserve, we estimated minute level physical exertion (PE) among BLSA subjects with at least 3 days of Actiheart data (n = 411). Subjects’ average time spent in each of sedentary, light, moderate and vigorous PE was associated with age adjusting for demographics, chronic conditions, and PA. Despite a significant decline in total PA with age (p < 0.001), time spent in moderate and vigorous PE is positively associated with age in both women (pmoderate < 0.001, pvigorous < 0.001) and men (pmoderate = 0.137, pvigorous = 0.222). Chronic conditions are also generally associated with increased average PE. Our results suggest that individuals with decreased capacity are, on average, engaging moderate and high relative intensity activities at a rate comparable to, or higher than, that of healthier individuals.

Direct Link:

Journal: Innovation in Aging. 2017 Jul;1(suppl_1):1239-

Keywords: Aging, heart rate reserve, heterogeneity, older adults, Physical Activity, Sedentary behaviour,

Applications: Physical Activity,

CamNtech Reference: AH17022

Back to Search Results

UK & International customers

CamNtech Ltd.
Manor Farm
PE28 9JD, UK

US customers

CamNtech Inc.
630 Boerne Stage Airfield,
Texas 78006,


© 2024 CamNtech Ltd and CamNtech Inc

Company information

Registered in England No. 2221302
VAT No: GB486 3019 34

Privacy Policy