Publications by authors named "A T Sumner"

Purpose: Body image affects health practices. With acculturation superimposed on globalization, 21st century body size preferences of African immigrants, one of the fasting growing populations in the United States, are unknown. Therefore, in African immigrants living in America we assessed: 1) body size preference; and 2) body size dissatisfaction.

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Article Synopsis
  • The study aimed to validate a new mathematical model for measuring insulin sensitivity and β-cell function, as traditional methods are impractical for large-scale research.
  • The researchers used data from previous studies involving 130 obese youths to compare their model-derived indices against standard clamp measurements and other indices.
  • The findings indicated that the new model (mDI-woI) was more effective at detecting insulin resistance and prediabetes than traditional methods, suggesting it could serve as a cost-effective tool for large epidemiological studies.
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Diagnosing diabetes by shortening the OGTT to 1-h and substituting 1-h post-load glucose (PG) ≥ 209 mg/dL for 2-h PG≥200 mg/dL has been proposed. One-hour PG≥209 mg/dL is from a meta-analysis without any African-descent populations. Our data suggest 1-h PG≥183 mg/dL maybe more optimal for Africans.

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Efficient and accurate methods to estimate insulin sensitivity () and β-cell function (BCF) are of great importance for studying the pathogenesis and treatment effectiveness of type 2 diabetes (T2D). Existing methods range in sensitivity, input data, and technical requirements. Oral glucose tolerance tests (OGTTs) are preferred because they are simpler and more physiological than intravenous methods.

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