Bidirectional associations of accelerometer-assessed physical activity and sedentary time with physical function among older English adults: the EPIC-Norfolk cohort study.
Dharani Yerrakalva, Samantha Hajna, Katrien Wijndaele, Paddy C Dempsey, Kate Westgate, Nick Wareham, Simon J Griffin, Soren Brage
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引用次数: 2
Abstract
To develop healthy ageing interventions, longitudinal associations between objectively assessed physical behaviours and physical function need to be better understood. We assessed associations between accelerometer-assessed total physical activity (PA), moderate-to-vigorous physical activity (MVPA), light physical activity (LPA), sedentary time and prolonged sedentary bout time, and clinically assessed physical function (grip strength, usual walking speed (UWS), chair stand speed) at two time-points in 3188 participants (≥ 60 years) of the EPIC-Norfolk study. Bidirectional associations were assessed using multivariable linear regression. Over an average of 6.1 years, baseline physical behaviours (greater total PA, MVPA and LPA, and less sedentary time) were associated with better subsequent walking and chair stand speed. Better baseline physical function was associated with better follow-up physical behaviours. There were no bidirectional associations between changes in physical behaviours and grip strength. Improvements in UWS were associated with improvements in all physical behaviours. Improvements in chair stand speed were associated with improvements in total PA, MVPA, and sedentary bout time. Improvements in physical behaviours were associated with improvements in UWS (3.1 cm/s/yr per 100 cpm/yr total PA, 3.6 cm/s/yr per hr/day/yr MVPA, 2.5 cm/s/yr per hr/day/yr LPA, - 2.9 cm/s/yr per hour/day/yr sedentary time, and - 1.6 cm/s/yr per hr/day/yr prolonged sedentary bout time). Only improvements in total PA, MVPA and sedentary bout time were associated with improvements in chair stand speed. In conclusion, we found bidirectional associations between changes in some physical behaviours and physical function and between baseline physical behaviours and subsequent physical function, highlighting the importance of considering the full range of physical behaviours to promote healthy ageing.
Supplementary information: The online version contains supplementary material available at 10.1007/s10433-022-00733-y.
期刊介绍:
The European Journal of Ageing: Social, Behavioural and Health Perspectives is an interdisciplinary journal devoted to the understanding of ageing in European societies and the world over.
EJA publishes original articles on the social, behavioral and population health aspects of ageing and encourages an integrated approach between these aspects.
Emphasis is put on publishing empirical research (including meta-analyses), but conceptual papers (including narrative reviews) and methodological contributions will also be considered.
EJA welcomes expert opinions on critical issues in ageing.
By stimulating communication between researchers and those using research findings, it aims to contribute to the formulation of better policies and the development of better practice in serving older adults.
To further specify, with the term ''social'' is meant the full scope of social science of ageing related research from the micro to the macro level of analysis. With the term ''behavioural'' the full scope of psychological ageing research including life span approaches based on a range of age groups from young to old is envisaged. The term ''population health-related'' denotes social-epidemiological and public health oriented research including research on functional health in the widest possible sense.