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Extremely short duration high intensity interval training substantially improves insulin action

In a recent study 16 young men performed 2 weeks of supervised high intensity training (HIT) comprising of a total of 15 min of exercise (6 sessions; 4–6 × 30-s cycle sprints per session). The subject performed about 250 kcal of work each week compared with the 2000 to 3000 kcal a week consumed during a typical aerobic training program. The results were surprising.

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What Is Exercise Intensity?

Q: What is exercise intensity?

A: In simplest terms, it's how hard an exercise is at a point in time. The technical definition is the level of momentary exertion during exercise.

Q: Why is it important?

A: Exercise of sufficient intensity is necessary to stimulate the body to make a change. When the body is worked beyond what it is equipped to handle, the body adapts as a form of self-protection.

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