High Intensity Interval Training (HIIT)
https://www.diabetes.co.uk/high-intensity-interval-training.html

High-intensity interval training rapidly improves diabetics’ glucose metabolism
https://www.sciencedaily.com/releases/2017/04/170407103559.htm

HIIT FOR BEATING INSULIN RESISTANCE
https://exerciseright.com.au/exercising-beating-insulin-resistance/

Interval Training While Walking Helps Control Blood Sugar
https://www.npr.org/sections/health-shots/2014/08/07/338367529/interval-training-while-walking-helps-control-blood-sugar

The Effects of Free-Living Interval-Walking Training on Glycemic Control, Body Composition, and Physical Fitness in Type 2 Diabetic Patients
Continuous walking offsets the deterioration in glycemia seen in the control group, and interval walking is superior to energy expenditure–matched continuous walking for improving physical fitness, body composition, and glycemic control.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3554285/

Why interval walking training is better than continuous walking training
https://www.sciencedaily.com/releases/2014/08/140804202138.htm