Cited by 280Genetics, Aging, and Longevity in Model OrganismsRegulation of Appetite and ObesityAdipose Tissue and Metabolism

Energy expenditure and aging

Open access
Manini, Todd M.·2010·Ageing Research Reviews

Abstract

The study of energy expenditure (EE) has deep roots in understanding aging and lifespan in all species. In humans, total EE decreases substantially in advanced age resulting from parallel changes in resting metabolic rate (RMR) and activity EE. For RMR, this reduction appears to be due to a reduction in organ mass and specific metabolic rates of individual tissues. However, these anatomical changes explain very little regarding the decline in activity EE, which is governed by both genetic and environmental sources. The biological control centers for activity EE are closely coupled with body mass fluctuations and seem to originate in the brain. Several candidate neuromodulators may be involved in the age-related reduction of activity EE that include: orexin, agouti-related proteins and dopaminergic pathways. Unfortunately, the existing body of research has primarily focused on how neuromodulators influence weight gain and only a few studies have been performed in aging models. Recent evidence suggests that activity EE has an important role in dictating lifespan and thus places emphasis on future research to uncover the underlying biological mechanisms. The study of EE continues to unlock clues to aging.

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Crossref · 10.1016/j.arr.2009.08.002

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  1. Pearl R 1928 The Rate of Living University London Press London

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Authors
Manini, T. M.
Affiliations
University of Florida (US)
Corresponding author
Manini, Todd M.
Venue
Ageing Research Reviews
Publisher
Elsevier BV
Published
2010-01
Volume
9
Issue
1
Pages
1-11
ISSN
1568-1637 (ISSN-L)
OpenAlex
W2086367664
Cited by
280
References
124
Citations by year
2026: 16 · 2025: 20 · 2024: 22 · 2023: 26 · 2022: 26 · 2021: 21 · 2020: 23 · 2019: 28 · 2018: 11 · 2017: 15 · 2016: 14 · 2015: 12 · 2014: 12 · 2013: 13 · 2012: 7
FWCI
0.66
Type
journal article
Language
en
Open access
Locations
  • Ageing Research Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (N01‐AG‐6–2101, N01AG62106, N01-AG-62103, P30AG028740)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
energy expenditure, aging, resting metabolic rate, physical activity energy expenditure, lifespan, neuromodulators, orexin, agouti-related protein, dopaminergic pathways, body mass, weight gain, organ mass
MeSH terms
Orexins, Aging, Body Composition, Body Weight, Dopamine, Energy Metabolism, Humans, Longevity, Neuropeptides, Weight Gain, Body Mass Index, Intracellular Signaling Peptides and Proteins, Agouti-Related Protein

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