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A comparison of acute glycaemic responses to accumulated or single bout walking exercise in apparently healthy, insufficiently active adults

© 2020 Sports Medicine Australia Objectives: To investigate the acute glyacaemic response to accumulated or single bout walking exercise in apparently healthy adults. Design: Three arm, randomised crossover control study. Methods: Ten adults (age: 50 ± 12.6 y; BMI 29.0 ± 5.4 kg m−2) completed three separate trials comprising three 10-min walking bouts after breakfast, lunch, and dinner (APPW), a single 30-min walking bout after dinner only (CPPW), or a no-exercise control (NOEX). Participants walked on a treadmill at a moderate intensity of 55%–70% heart rate reserve. Two-hour postprandial glucose response was assessed using a continuous glucose monitor. Results: There was a difference in the pattern of the glucose response between the trials during the two hours following dinner (p < 0.001). Postprandial dinner glucose concentrations were not different between APPW and CPPW but were up to 1.01 mmol L−1 lower than NOEX (partial eta2 = 0.21, p = 0.041). Conclusions: Ten minutes of moderate intensity walking completed 30 min after each meal lowers postprandial dinner glucose concentrations in comparison to no-exercise, and reduces glucose by a similar magnitude as a single 30-min bout after the evening meal. Short bouts of exercise after each meal may be recommended to minimise glucose elevations after dinner that might increase risk of cardiometabolic disease.

Funding

The authors thank the participants for their support and commitment to the study, and also Luke Daly, Paul Xanthos, and theundergraduate students who assisted with the data collection. The study was completed thanks to funding received from the La Trobe University Sport Exercise and Rehabilitation research focus area.

History

Publication Date

01/01/2020

Journal

Journal of Science and Medicine in Sport

Volume

23

Issue

10

Article Number

2269

Pagination

6p.

Publisher

Elsevier

ISSN

1440-2440

Rights Statement

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