Metabolic consequences of overfeeding in humans

Détails

ID Serval
serval:BIB_C2BEC5C2A101
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Institution
Titre
Metabolic consequences of overfeeding in humans
Périodique
Current Opinion in Clinical Nutrition and Metabolic Care
Auteur⸱e⸱s
Tappy  L.
ISSN
1363-1950 (Print)
Statut éditorial
Publié
Date de publication
11/2004
Volume
7
Numéro
6
Pages
623-8
Notes
Journal Article
Review --- Old month value: Nov
Résumé
PURPOSE OF REVIEW: Overfeeding leads to obesity and metabolic disorders, including impaired glucose homeostasis, lipid disorders, and hepatic steatosis. The consequences of standardized overfeeding on body weight have shown, however, considerable interindividual variability, which suggests that it also leads to adaptative changes in energy expenditure, in some individuals at least. The present review is mainly focused on the recent developments regarding the effects of overfeeding on energy expenditure. RECENT FINDINGS: Individuals who gain the less body weight during overfeeding are those who experience a greater increase in total energy expenditure. This increase in energy expenditure has been attributed to stimulation of nonexercise physical activity. Recent developments regarding adaptative increases in physical activity are critically reviewed. Overfeeding also alters the pathways used for carbohydrate storage after a glucose load, by increasing de-novo lipogenesis in the liver and adipose tissue at the expense of glycogen storage. The sympathetic nervous system is a good candidate for energy expenditure increase during overfeeding. The increases in energy expenditure observed during acute stimulation of the sympathetic nervous system were however found to be unaltered by short-term overfeeding. SUMMARY: The mechanisms by which some individuals protect themselves against body weight gain remain poorly understood. Nonvoluntary physical activity may allow one to increase energy expenditure during overfeeding, and may therefore constitute a regulatory factor in body weight control. The biological determinant of spontaneous, nonvoluntary physical activity, however, remains to be investigated.
Mots-clé
Adaptation, Physiological Adipose Tissue/metabolism Energy Intake/*physiology Energy Metabolism/*physiology Humans Liver/metabolism Obesity/metabolism Sympathetic Nervous System/*physiology
Pubmed
Web of science
Création de la notice
24/01/2008 14:36
Dernière modification de la notice
20/08/2019 16:37
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