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    Aspartame in conjunction with carbohydrate reduces insulin levels during endurance exercise

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    Authors
    Siegler, Jason
    Howell, Keith
    Vince, Rebecca
    Bray, James W.
    Towlson, Chris
    Peart, Daniel
    Mellor, Duane
    Atkin, Stephen
    Affiliation
    University of Western Sydney ; University of York ; University of Hull ; University of Hull ; University of Hull ; University of Hull ; University of Chester ; University of York
    Publication Date
    01/08/2012
    
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    Abstract
    As most sport drinks contain some form of non-nutritive sweetener (e.g. aspartame), and with the variation in blood glucose regulation and insulin secretion reportedly associated with aspartame, a further understanding of the effects on insulin and blood glucose regulation during exercise is warranted. Therefore, the aim of this preliminary study was to profile the insulin and blood glucose responses in healthy individuals after aspartame and carbohydrate ingestion during rest and exercise. Each participant completed four trials under the same conditions (45 min rest + 60 min self-paced intense exercise) differing only in their fluid intake: 1) carbohydrate (2% maltodextrin and 5% sucrose (C)); 2) 0.04% aspartame with 2% maltodextrin and 5% sucrose (CA)); 3) water (W); and 4) aspartame (0.04% aspartame with 2% maltodextrin (A)). Insulin levels dropped significantly for CA versus C alone (43%) between pre-exercise and 30 min, while W and A insulin levels did not differ between these time points. Aspartame with carbohydrate significantly lowered insulin levels during exercise versus carbohydrate alone.
    Citation
    Journal of the International Society of Sports Nutrition, 1 August 2012, 9(1), pp. 36
    DOI
    10.1186/1550-2783-9-36
    Type
    Journal Article
    Description
    Gold OA
    ae974a485f413a2113503eed53cd6c53
    10.1186/1550-2783-9-36
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    Gold OA
    Clinical Sciences and Nutrition

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