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The influence of the subjects’ training state on the glycemic index

European Journal of Clinical Nutrition volume 61, pages 19–24 (2007)Cite this article

Abstract

Objective:

To determine the glycemic index (GI) dependence on the training state of healthy adult males.

Subjects and design:

Young, adult males of normal body mass index and normal glucose tolerance were tested twice with a 50 g reference glucose solution and twice with a breakfast cereal containing 50 g of available carbohydrates in a randomized order. Ten subjects were sedentary (SE), 12 were moderately trained (MT) and 12 were endurance trained (ET). Blood glucose, insulin and glucagon were measured.

Results:

The GI differed significantly between SE and ET subjects (P=0.02, mean difference: 23 GI units, 95% CI=3–42 GI units). The GI of the MT subjects was intermediary, but did not differ significantly from the SE or ET subjects. The insulin index did not differ significantly between the groups (P=0.65).

Conclusion:

The GI of the commercially available breakfast cereal depended on the training state of the healthy males. The training state is the first reported factor influencing the GI that is subject specific rather than food specific.

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Acknowledgements

We thank Astrid Peterhans, Fabienne Schwitz and Patricia Kressig for their medical assistance, and the Swiss Foundation for Nutrition Research and the Federal Council of Sports for partially funding this study.

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Authors and Affiliations

  1. Department of Agricultural and Food Sciences, ETH Zurich, Zurich, Switzerland

    S Mettler, F Lamprecht-Rusca, N Stoffel-Kurt, C Wenk & P C Colombani

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  1. S Mettler
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  2. F Lamprecht-Rusca
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  3. N Stoffel-Kurt
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  4. C Wenk
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  5. P C Colombani
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Corresponding author

Correspondence to S Mettler.

Additional information

Study data have not been previously published and are not currently submitted for publication.

Guarantor: PC Colombani.

Contributors: SM was responsible for and coordinated the execution of the study and laboratory analysis, performed the statistical analysis and drafted the manuscript. SM, CW and PCC obtained the funding, planned and designed the study. SM, FLR and NSK executed the study. PCC edited the manuscript and FLR, NSK and CW commented on the manuscript.

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Mettler, S., Lamprecht-Rusca, F., Stoffel-Kurt, N. et al. The influence of the subjects’ training state on the glycemic index. Eur J Clin Nutr 61, 19–24 (2007). https://doi.org/10.1038/sj.ejcn.1602480

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