Effect of exercise duration on postprandial glycaemic and insulinaemic responses in adolescents

Dring, K.J. ORCID: 0000-0002-9647-3579, Cooper, S.B. ORCID: 0000-0001-5219-5020, Williams, R.A. ORCID: 0000-0002-1346-7756, Morris, J.G. ORCID: 0000-0001-6508-7897, Sunderland, C. ORCID: 0000-0001-7484-1345 and Nevill, M.E. ORCID: 0000-0003-2498-9493, 2020. Effect of exercise duration on postprandial glycaemic and insulinaemic responses in adolescents. Nutrients, 12 (3): 754. ISSN 2072-6643

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High-intensity intermittent exercise (HIIE) is a potential intervention to manage hyperglycaemia and insulin resistance in adolescents. The aim of this study was to determine the optimum duration of HIIE to reduce postprandial glycaemic and insulinaemic responses in adolescents and the longevity of the response. Thirty-nine participants (12.4 ± 0.4 year) completed a 30- and 60-min exercise trial (Loughborough Intermittent Shuttle Test) and a rested control trial in a randomised crossover design. Capillary blood samples were taken at baseline, immediately and 1-h post-exercise; and 30, 60 and 120 min following a standardised lunch (day one) and a standardised breakfast 24-h post-exercise. Plasma insulin total area under the curve (tAUC) following lunch was lower following 60-min HIIE (21,754 ± 16,861 pmol·L−1 × 120 min, p = 0.032) and tended to be lower following 30-min HIIE (24,273 ± 16,131 pmol·L−1 × 120 min, p = 0.080), when compared with the resting condition (26,931 ± 21,634 pmol·L−1 × 120 min). Blood glucose concentration was lower 1-h post-exercise following 30-min HIIE (3.6 ± 0.6 mmol·L−1) when compared to resting (4.1 ± 0.9 mmol·L−1, p = 0.001). Blood glucose and plasma insulin concentration did not differ across trials on day two. Shorter bouts of HIIE (30-min), as well as a 60-min bout, reduced the postprandial insulinaemic response to lunch, an ecologically valid marker of insulin sensitivity. As the beneficial effects of HIIE were limited to 3 h post-exercise, adolescents are recommended to engage daily HIIE to enhance metabolic health.

Item Type: Journal article
Publication Title: Nutrients
Creators: Dring, K.J., Cooper, S.B., Williams, R.A., Morris, J.G., Sunderland, C. and Nevill, M.E.
Publisher: MDPI AG
Date: 2020
Volume: 12
Number: 3
ISSN: 2072-6643
Rights: © 2020 MDPI AG. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 24 Mar 2020 15:53
Last Modified: 12 Feb 2021 09:25
URI: https://irep.ntu.ac.uk/id/eprint/39467

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