Here’s a quick review of an older study (from 1997). In the study, they took middle-aged diabetics and randomized them to do either nothing, or to do 45 minutes of vigorous cycling on a stationary bike twice per week, plus one session of high-intensity interval cardio training (consisting of two minutes of vigorous exercise followed by three minutes of light exercise for five cycles, for a total of 25 minutes).
After two months, the people who did the exercise had lost 48% of their visceral fat, and significantly improved their insulin sensitivity and blood glucose numbers, even though they didn’t lose a significant amount of weight overall. You can read the full study by clicking here.
