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Titolo:
Substrate utilization during exercise in formerly morbidly obese women
Autore:
Guesbeck, NR; Hickey, MS; MacDonald, KG; Pories, WJ; Harper, I; Ravussin, E; Dohm, GL; Houmard, JA;
Indirizzi:
E Carolina Univ, Human Performance Lab, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 nce Lab, Greenville, NC 27858 USA E Carolina Univ, Dept Exercise & Sport Sci, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 ort Sci, Greenville, NC 27858 USA E Carolina Univ, Dept Biochem, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 Biochem, Greenville, NC 27858 USA E Carolina Univ, Dept Surg, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 pt Surg, Greenville, NC 27858 USA NIDDKD, Clin Diabet & Nutr Sect, NIH, Phoenix, AZ 85016 USA NIDDKD Phoenix AZ USA 85016 iabet & Nutr Sect, NIH, Phoenix, AZ 85016 USA Pennington Biomed Res Ctr, Baton Rouge, LA 70808 USA Pennington Biomed ResCtr Baton Rouge LA USA 70808 on Rouge, LA 70808 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 3, volume: 90, anno: 2001,
pagine: 1007 - 1012
SICI:
8750-7587(200103)90:3<1007:SUDEIF>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY-EXPENDITURE; POST-OBESE; FAT OXIDATION; WEIGHT-GAIN; METABOLISM; INDIVIDUALS; NONOBESE; DIET;
Keywords:
fat; lipid; obesity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Houmard, JA E Carolina Univ, Human Performance Lab, Ward Sports Med Bldg, Greenville, NC 27858 USA E Carolina Univ Ward Sports Med Bldg Greenville NCUSA 27858 A
Citazione:
N.R. Guesbeck et al., "Substrate utilization during exercise in formerly morbidly obese women", J APP PHYSL, 90(3), 2001, pp. 1007-1012

Abstract

The purpose of this study was to compare substrate utilization during fasting and submaximal exercise in morbidly obese women after weight loss (WL) with that in weight-matched controls (C). WL were studied in the weight-stable condition similar to 24 mo after gastric bypass surgery. Energy intake (self-reported) and expenditure ((H2O)-H-2-O-18) were also compared. The respiratory exchange ratio during exercise at the same absolute (15 W) workload was significantly (P less than or equal to 0.05) elevated in WL vs. C (0.90 +/- 0.02 vs. 0.83 +/- 0.03); this was reflected as lower fat utilization in WL (29.7 +/- 4.8 vs. 53.2 +/- 9.7% of energy from fat). Respiratory exchange ratio during exercise at the same relative (65% of maximal O-2 uptake) intensity was also significantly (P < 0.05) elevated in WL (0.96 +/- 0.01 vs. 0.89 +/- 0.02), and fat use was concomitantly depressed (12.4 +/- 3.0vs. 34.3 +/- 9.9% of energy from fat). Resting substrate utilization, daily energy expenditure, and self-reported relative macronutrient intake did not differ between groups. These data suggest that lipid oxidation is depressed during physical activity in WL. This defect may, at least in part, contribute to a propensity for the development of morbid obesity.

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Documento generato il 26/01/20 alle ore 23:05:19