Journal
JOURNAL OF PHYSIOLOGY-LONDON
Volume 597, Issue 5, Pages 1299-1309Publisher
WILEY
DOI: 10.1113/JP277071
Keywords
Ageing; Exercise; Human physiology
Categories
Funding
- Bupa Foundation
- MRC [MR/K00414X/1, MR/P021220/1] Funding Source: UKRI
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This brief review focuses on the relationships and interactions between human ageing, exercise and physiological function. It explores the importance of the selection of participants for ageing research, the strengths and deficiencies of both cross-sectional and longitudinal studies, and the complexities involved in understanding time-dependent, lifelong physiological processes. As being physically active is crucial to fostering healthy ageing, it is essential that participants in health and ageing research are defined in terms of their physical activity/exercise status as well as other lifestyle factors. Comparisons of exercisers with non-exercisers has suggested that there is a mosaic of regulation of ageing both within and across physiological systems. We suggest that four broad categories exist which encompass this regulation. These are (i) systems and indices that are age dependent, but activity independent; (ii) systems that are age dependent, but also malleable by exercise; (iii) systems that are not age affected but are altered by exercise; and (iv) systems that are neither age nor activity dependent. We briefly explore the concept of a mosaic of regulation in a selection of physiological systems. These include skeletal muscle, the immune and endocrine systems, gastrointestinal as well as cognitive function. We go onto examine how these categories might fit within the broad framework of understanding the physiology of human ageing.
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