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Predictive factors of non-deterioration of glucose tolerance following a 2-year behavioral intervention

Bianca Almeida-Pititto1, Amélia T Hirai2, Daniela S Sartorelli3, Helena A Harima2, Suely GA Gimeno2, Sandra RG Ferreira1* and the Japanese-Brazilian Diabetes Study Group

Author Affiliations

1 Department of Nutrition, School of Public Health, University of Sao Paulo-Av. Dr. Arnaldo, 715, CEP 01246-904, São Paulo-SP, Brazil

2 Department of Preventive Medicine, Federal University of Sao Paulo-Rua Borges Lagoa, 564, cj. 81/82, Vila Clementino CEP 04038-000, São Paulo, SP, Brazil

3 Department of Social Medicine, University of Sao Paulo-Rua Onze de Agosto, 798 apto. 81, Campos Elíseos, CEP 14085-030, Ribeirão Preto, SP, Brazil

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Diabetology & Metabolic Syndrome 2010, 2:52 doi:10.1186/1758-5996-2-52

Published: 30 July 2010

Abstract

Aim

To identify predictive factors associated with non-deterioration of glucose metabolism following a 2-year behavioral intervention in Japanese-Brazilians.

Methods

295 adults (59.7% women) without diabetes completed 2-year intervention program. Characteristics of those who maintained/improved glucose tolerance status (non-progressors) were compared with those who worsened (progressors) after the intervention. In logistic regression analysis, the condition of non-progressor was used as dependent variable.

Results

Baseline characteristics of non-progressors (71.7%) and progressors were similar, except for the former being younger and having higher frequency of disturbed glucose tolerance and lower C-reactive protein (CRP). In logistic regression, non-deterioration of glucose metabolism was associated with disturbed glucose tolerance - impaired fasting glucose or impaired glucose tolerance - (p < 0.001) and CRP levels ≤ 0.04 mg/dL (p = 0.01), adjusted for age and anthropometric variables. Changes in anthropometry and physical activity and achievement of weight and dietary goals after intervention were similar in subsets that worsened or not the glucose tolerance status.

Conclusion

The whole sample presented a homogeneous behavior during the intervention. Lower CRP levels and diagnosis of glucose intolerance at baseline were predictors of non-deterioration of the glucose metabolism after a relatively simple intervention, independent of body adiposity.