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Sökning: LAR1:gu > Tidskriftsartikel > Refereegranskat > Sjöström Lars > (1992-1994)

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1.
  • Lindroos, Anna-Karin, 1958-, et al. (författare)
  • Validity and reproducibility of a self-administered dietary questionnaire in obese and non-obese subjects
  • 1993
  • Ingår i: European Journal of Clinical Nutrition. ; 47, s. 461-481
  • Tidskriftsartikel (refereegranskat)abstract
    • Department of Medicine, Sahlgrenska Hospital, University of Göteborg, Sweden. The validity and reproducibility of a self-administered dietary questionnaire has been tested with specific attention to differences between obese and non-obese subjects. To test the validity, the dietary questionnaire was compared with 4-day food records, 24-h energy expenditure (24EE) and nitrogen excretion in 45 obese and 19 non-obese men and women. Energy intake was 2% higher (non-significantly) from questionnaire than from food records in the non-obese, but 35% higher (P < 0.001) in the obese. Comparing energy intake from the questionnaire with estimated 24EE, the questionnaire gave 4% higher values in both the non-obese and obese, differences which were not significant. The reproducibility in the obese sample that completed the questionnaire twice was comparable to that observed in normal populations. These data suggest that it is possible to obtain information on obese subjects' dietary intake that is at least as valid and reproducible as that from normal weight individuals. PMID: 8404782 [PubMed - indexed for MEDLINE]
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2.
  • Lissner, Lauren, 1956-, et al. (författare)
  • The natural history of obesity in an obese population and associations with metabolic aberrations
  • 1994
  • Ingår i: International Journal of Obesity. ; 18, s. 441-447
  • Tidskriftsartikel (refereegranskat)abstract
    • Department of Medicine, Sahlgrenska Hospital, University of Göteborg, Sweden. The natural history of obesity was examined in a nation-wide sample of 1,084 obese men and 1,367 obese women aged 37-59 years who were recruited into a registry of potential subjects for an intervention trial. The registry and intervention studies are jointly referred to as SOS ('Swedish Obese Subjects'). In the registry, the mean body mass index was 37.7 kg/m2 in men and 40.9 kg/m2 in women. Descriptive information on subjects' weight histories and the relative weights of their biological parents was collected by means of a self-administered questionnaire. At a physical examination shortly thereafter, weights, heights and selected cardiovascular risk factors were measured in the fasting state. Virtually all subjects reported weight loss attempts in the past, men and women reported having gained weight during adulthood at a considerably higher rate than that observed in population-based samples. Significant correlations were observed between relative weights of obese males and both of their biological parents, but not between obese women and either of their parents. Indices of medical risk were then examined in relation to individual weight histories. Familial predisposition did not relate to most aspects of current medical risk. However, later-onset obesity tended to be associated with greater cardiovascular risk, while prior weight loss was predictive of an improved risk factor profile. These latter associations were not dependent on a subject's current degree of obesity and were particularly consistent with respect to fasting insulin level. PMID: 8081436 [PubMed - indexed for MEDLINE]
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3.
  • Sjöström, Lars, et al. (författare)
  • Swedish obese subjects (SOS). Recruitment for an intervention study and a selected description of the obese state
  • 1992
  • Ingår i: International Journal of Obesity. ; 19, s. 465-479
  • Tidskriftsartikel (refereegranskat)abstract
    • Department of Medicine, Sahlgren's Hospital, University of Göteborg, Sweden. SOS (Swedish obese subjects) is an on-going intervention trial designed to determine whether the mortality and morbidity rates among obese individuals who lose weight by surgical means (gastric banding, vertical banded gastroplasty and gastric by-pass) differ from the rates associated with conventional treatment. For this purpose, the study is recruiting a sample of obese men and women who constitute a registry of potential subjects from which the participants are drawn. Eligibility criteria for participation in the registry were: age at application 37-57 years and BMI greater than or equal to 34 kg/m2 for men and greater than or equal to 38 kg/m2 for women. Before receiving a health examination, all patients complete extensive questionnaires on current and past health status, utilization of medical care and medications, socio-economic status, psychological profiles, dietary habits, physical activity, weight history, and familial disposition to obesity. Each surgical case is matched to its optimal control in the registry, to ensure that the two groups do not differ systematically with respect to any of 18 matching variables that may affect prognosis. The first 1006 subjects included in the registry have been studied with respect to morbidity and compared with on-going population studies of men and women in Göteborg, Sweden. The relative risks of prevalent disease and symptoms associated with obesity in 50-year-old males and females respectively were 4.3 and 4.7 (dyspnoea), 14.7 and 11.8 (angina), 6.3 (myocardial infarction, males only), 2.1 and 4.5 (hypertension), 5.2 and 6.6 (diabetes), 4.6 and 26.1 (claudication) and 1.7 and 1.8 (gall bladder disease). Correspondingly, obese males and females display elevations of systolic and diastolic blood pressure, fasting glucose, insulin, triglyceride, and uric acid levels. However, total cholesterol was not increased in obese males and was in fact significantly lower in obese compared with reference women. HDL-cholesterol was lower in obese than reference men (data were not available in reference women). The rate of taking sick pensions was over twice as high in SOS obese patients than in population controls. Finally, comparison of measurements with self-reported prevalence estimates revealed a considerable amount of previously undiagnosed hypertension and diabetes in the obese subjects. These data suggest that the excess health risks associated with obesity may not be fully appreciated. PMID: 1322873 [PubMed - indexed for MEDLINE]
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4.
  • Stenlöf, Kaj, 1965-, et al. (författare)
  • Thyroid hormones, procollagen III peptide, body composition and basal metabolic rate in euthyroid individuals.
  • 1993
  • Ingår i: Scandinavian journal of clinical and laboratory investigation. - 0036-5513. ; 53:8, s. 793-803
  • Tidskriftsartikel (refereegranskat)abstract
    • We examined 103 euthyroid men and women within a wide range of body weights and ages. Fat free mass (FFM) and body fat (BF) were determined with the total body potassium technique, basal metabolic rate (BMR) by indirect calorimetry and serum concentrations of thyroid hormones (free and total T3 and T4) and the aminoterminal propeptide of collagen III (pIIIp) by immunoassays. BMR was positively related to FFM, BF, total T3, the free T3/free T4 ratio and pIIIp, and negatively to free T4 (men) and to the ratios free T4/total T4 and free T3/total T3. pIIIp was as strongly related to BMR as to total T3. It is suggested that pIIIp may serve as an indicator of peripheral energy expenditure. The negative relationship between BMR and free T4 was unexpected and different to the situation in hypo- and hyperthyreosis where BMR and thyroid hormone are positively related. Our hypothesis is that euthyroid subjects with low serum free thyroid hormone concentrations and comparatively high BMR may have high intracellular thyroid hormone concentrations.
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