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Discrepancy between self-reported and actual caloric intake and exercise in obese subjects.
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N Engl J Med 1992 Dec 31;327(27):1893-1898 Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. Lichtman SW, Pisarska K, Berman ER, Pestone M, Dowling H, Offenbacher E, Weisel H, Heshka S, Matthews DE, Heymsfield SB. Department of Medicine, St. Luke's-Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, NY. BACKGROUND AND METHODS. Some obese subjects repeatedly fail to lose weight even though they report restricting their caloric intake to less than 1200 kcal per day. We studied two explanations for this apparent resistance to diet--low total energy expenditure and underreporting of caloric intake--in 224 consecutive obese subjects presenting for treatment. Group 1 consisted of nine women and one man with a history of diet resistance in whom we evaluated total energy expenditure and its main thermogenic components and actual energy intake for 14 days by indirect calorimetry and analysis of body composition. Group 2, subgroups of which served as controls in the various evaluations, consisted of 67 women and 13 men with no history of diet resistance. RESULTS. Total energy expenditure and resting metabolic rate in the subjects with diet resistance (group 1) were within 5 percent of the predicted values for body composition, and there was no significant difference between groups 1 and 2 in the thermic effects of food and exercise. Low energy expenditure was thus excluded as a mechanism of self-reported diet resistance. In contrast, the subjects in group 1underreported their actual food intake by an average (+/- SD) of 47 +/- 16 percent and overreported their physical activity by 51 +/- 75 percent. Although the subjects in group 1 had no distinct psychopathologic characteristics, they perceived a genetic cause for their obesity, used thyroid medication at a high frequency, and described their eating behavior as relatively normal (all P 0.05 as compared with group 2). CONCLUSIONS. The failure of some obese subjects to lose weight while eating a diet they report as low in calories is due to an energy intake substantially higher than reported and an overestimation of physical activity, not to an abnormality in thermogenesis. NR http://www.pat-acceptance.org/kookrant.html http://www.pat-acceptance.org/kookrant2.html If I catch you busting into a mass and vilifying a church, the last thing you'll hear in your entire life, will be the ratatatatat of an automatic. - --Steve Chaney to Mark Ira Kaufman Message-ID: Young Mr. Chaney, the man who has told me that he wants to murder me and sodomize women in my family, has said, repeatedly, that advocates for choice had vandalized churches. - --Mark Ira Kaufman Message-ID: she probably has to have her picture taken by satellite because no normal camera can fit all that whale blubber into one picture. - --Steve Chaney Message-ID: Excessively fat women look ugly. It is impractical to try and have sex when she's 100lbs overweight and the weight is all fat - but most women ain't that big. - --Steve Chaney Message-ID: You of course do know what a lot of Asian women prefer, right? Besides, after ****ing a cute asian chick, experience tells me it isn't all that except that she looks good on your arm. In bed it ain't much at all. If the lights go out, any guy whose hormones are more fixed on performance than looks, is going to go to sleep right there and then. - --Steve Chaney Message-ID: Clarice and Allisson were well beyond a BMI of 25 in their pictures where they were called cows. - --Steve Chaney Message-ID: If Dutton knocked on Steve's door and Steve shot him in the face, I would really not care. - --Crash Street Kidd about Steve Chaney Message-ID: Stephen A Chaney admits to sodomizing his daughter if he forges me now. -----BEGIN PGP SIGNATURE----- Version: N/A iQA/AwUBQNDxZTL3IlvsWvnjEQItJwCfVjQVacDSno+DcD8VQ3gcsw FpTk0AoOsF 5EyLL6N/PjlkmqlWSJt5rhYA =pdgp -----END PGP SIGNATURE----- |
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Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. | NR | General Discussion | 3 | May 23rd, 2004 08:51 AM |