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Ungethüm, K. ; Jolink, M. ; Hippich, M. ; Lachmann, L. ; Haupt, F. ; Winkler, C. ; Hummel, S. ; Pitchika, A. ; Kordonouri, O.* ; Ziegler, A.-G. ; Beyerlein, A.

Physical activity is associated with lower insulin and C-peptide during glucose challenge in children and adolescents with family background of diabetes.

Diabetic Med. 36, 366-375 (2019)

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Aims Children and adolescents with a family history of diabetes are at increased risk of overweight, but little is known about the potentially beneficial effects of physical activity on these children. The objective of this study was to investigate the association between moderate to vigorous physical activity (MVPA) and metabolic and inflammatory risks in children and adolescents with a family background of Type 1 diabetes or gestational diabetes. Methods Valid MVPA measurements, made with accelerometers, were available from 234 participants (median age, 10.2 years) who had a first-degree relative with either Type 1 or gestational diabetes. Anthropometric and metabolic measurements were made and cytokines measured, and were correlated with MVPA measurements, with stepwise adjustment for confounding factors, in a cross-sectional analysis. Results MVPA was negatively associated with insulin and C-peptide during challenge with an oral glucose tolerance test. MVPA was also significantly positively associated with the insulin sensitivity index, whereas no consistently significant associations were found between MVPA and BMI, blood pressure or cytokine levels. Discussion Our findings indicate that physical activity may have beneficial effects on insulin and C-peptide metabolism in children and adolescents with a family background of diabetes, but show no evidence of a protective association with other health-related outcomes.

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