Determinants of basal fat oxidation in healthy Caucasians.
Détails
ID Serval
serval:BIB_279446079FA5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Determinants of basal fat oxidation in healthy Caucasians.
Périodique
Journal of Applied Physiology
ISSN
8750-7587 (Print)
ISSN-L
0161-7567
Statut éditorial
Publié
Date de publication
05/1996
Volume
80
Numéro
5
Pages
1743-1748
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
Publication Status: ppublish
Publication Status: ppublish
Résumé
In a retrospective study, we examined several determinants of basal fat oxidation in 720 healthy Caucasian volunteers. Adult men (n = 427) and women (n = 293) were characterized for resting energy expenditure and substrate oxidation by indirect calorimetry (after a 12-h overnight fast), peak O2 consumption by a treadmill test to exhaustion, body composition by hydrodensitometry, food intake from a 3-day food diary, and hormonal status by fasting hormone concentrations. Fat oxidation was negatively correlated with fat mass in men (r = -0.11; P < 0.05), but no statistical relationship was found in women. In a stepwise multiple regression analysis, fat oxidation was best predicted by peak O2 consumption and fat-free mass in men (model R2 = 0.142) and by free thyroxine, fat-free mass, and fasting insulin in women (model R2 = 0.153). Relative rates of fat oxidation (fat oxidation adjusted for differences in resting energy expenditure) were not correlated with fat mass in either gender. Women showed a lower rate of basal fat oxidation (both absolute and adjusted) than did men. Our results show that fat oxidation is not greater in individuals with a greater fat mass. Furthermore, our results support a sexual dimorphism in basal rates of fat oxidation.
Mots-clé
Adult, Aged, European Continental Ancestry Group, Fats/metabolism, Female, Humans, Male, Middle Aged, Obesity/metabolism, Sex Factors
Pubmed
Web of science
Création de la notice
21/01/2008 14:09
Dernière modification de la notice
20/08/2019 14:06