Document Detail

The acute effects of olive oil v. cream on postprandial thermogenesis and substrate oxidation in postmenopausal women.
MedLine Citation:
PMID:  14756910     Owner:  NLM     Status:  MEDLINE    
The influence of the source of dietary fat on postprandial thermogenesis and substrate oxidation rates, was examined in twelve postmenopausal women aged 57-73 years, with BMI 21.9-38.3 kg/m(2). A single blind, randomised, paired comparison of two high-fat, isoenergetic, mixed test meals was conducted. The major source of fat was either cream (CREAM) or extra virgin olive oil (EVOO). RMR, diet-induced thermogenesis (DIT) and substrate oxidation rates over 5 h were measured by indirect calorimetry. There were no differences in body weight, RMR, fasting carbohydrate or fat oxidation rates between the two occasions. DIT (EVOO 97 (SD 46) v. CREAM 76 (SD 69) kJ/5 h and EVOO 5.2 (SD 2.5) v. CREAM 4.1 (SD 3.7)% energy) did not differ between the two test meals. The postprandial increase in carbohydrate oxidation rates, relative to their respective fasting values (DeltaCOX), was significantly lower following the EVOO meal (EVOO 10.6 (SD 8.3) v. CREAM 17.5 (SD 10) g/5 h; paired t test, P=0.023), while postprandial fat oxidation rates (DeltaFOX) were significantly higher (EVOO 0.0 (SD 4.4) v. CREAM -3.6 (sd 4.0) g/5 h; P=0.028). In the eight obese subjects, however, DIT was significantly higher following the EVOO meal (EVOO 5.1 (SD 2.0) v. CREAM 2.5 (sd 2.9) %; P=0.01). This was accompanied by a significantly lower DeltaCOX (EVOO 10.9 (SD 9.9) v. CREAM 17.3 (SD 10.5) g/5 h; P=0.03) and significantly higher DeltaFOX (EVOO 0.11 (SD 4.4) v. CREAM -4.1 (SD 4.5) g/5 h, P=0.034). The present study showed that olive oil significantly promoted postprandial fat oxidation and stimulated DIT in abdominally obese postmenopausal women.
M J Soares; S J Cummings; J C L Mamo; M Kenrick; L S Piers
Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The British journal of nutrition     Volume:  91     ISSN:  0007-1145     ISO Abbreviation:  Br. J. Nutr.     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-02-03     Completed Date:  2004-03-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  245-52     Citation Subset:  IM    
Department of Nutrition, Dietetics and Food Science, School of Public Health, Curtin University of Technology, GPO Box U 1987, Perth WA 6845, Australia.
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MeSH Terms
Calorimetry, Indirect / methods
Dairy Products*
Dietary Fats / metabolism,  pharmacology*
Fasting / physiology
Middle Aged
Obesity / physiopathology
Oxygen Consumption / drug effects
Plant Oils / pharmacology*
Postmenopause / physiology*
Postprandial Period / physiology
Single-Blind Method
Thermogenesis / drug effects*
Reg. No./Substance:
0/Dietary Fats; 0/Plant Oils; 8001-25-0/olive oil

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