Walking before dinner doesn't lower blood sugar in people with type 2 diabetes

exercise
Credit: CC0 Public Domain

A brisk evening walk before dinner does not affect glucose levels in people with type 2 diabetes, according to University of Alberta research that contradicts previous findings.

"We found no difference between 50 minutes of walking in the afternoon and 50 minutes of sitting on the 24-hour profile," said Jordan Rees, a Ph.D. student in U of A researcher Normand Boulé's Physical Activity and Diabetes Laboratory. "This was quite surprising given it was a bit different from studies we've seen in the past."

The multi-site study followed 80 people with type 2 diabetes for one week.

Participants fitted with a continuous glucose monitor were put on a standardized diet with eating instructions that included a lunch three to five hours before walking for 50 minutes, with dinner consumed immediately after.

Walking was chosen because it is a preferred mode of activity for people with diabetes and the afternoon was chosen for convenience for participants who work.

Rees said many previous short-term studies showing has a beneficial effect on in those with type 2 diabetes were completed in the morning, typically after breakfast.

She explained when we eat a meal, our food gets absorbed into our bloodstream as glucose, which can cause a spike in our .

"The thinking is if we can time our exercise to when we see that spike, we can use exercise, which uses glucose for fuel, to lower that spike we see after a meal," she said. "However, the timing of walking in our study may not have been ideal to lower 24-hour glucose levels, as observed in previous studies."

Despite moderate levels of exercise before dinner having no effect on blood sugar, Rees said her team still encourages exercise for the many health benefits it provides.

The Canadian Physical Activity Guidelines and the position statement of the American Diabetes Association recommend 150 minutes per week of moderate-intensity exercise.

"We just need to do more investigating around when is the most optimal time of day for this population to complete their exercise," she said.

"We're not sure what effect longer-term moderate exercise at different times of day will have on glycemic control—time of day and time of exercise around meals are important factors to consider."


Explore further

Morning workouts safer for people with type 1 diabetes, study suggests

Citation: Walking before dinner doesn't lower blood sugar in people with type 2 diabetes (2019, August 14) retrieved 19 August 2019 from https://medicalxpress.com/news/2019-08-dinner-doesnt-blood-sugar-people.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
5 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more