Just Exercise Harder for Less Time?

Everyone is confused about what types and amounts of training people with diabetes should be doing for optimal blood glucose control and health. When I last wrote about this topic, the latest exercise research older adults with type 2 diabetes enduring six sessions of high-intensity interval training (HIIT) was done on a cycle ergometer over two weeks (1). The training sessions, which were typical of some of the latest HIIT, consisted of 60 seconds of cycling done 10 times at ~90% of maximal heart rate, interspersed with 60 seconds of rest—for a total of only 10 minutes of actual exercise and 10 minutes of recovery. So, that protocol involved almost an all-out sprint for a minute at a time,

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