Interval training vs continuous training in middle-aged and older adults

Researchers combined results from studies comparing interval training, short bursts of harder exercise with easier breaks, with continuous training, steady exercise at a moderate pace. The participants were middle-aged and older adults. Both types of exercise generally improved fitness and some measures of health. Interval training sometimes produced a slightly larger fitness improvement, but the differences were not consistent for weight, blood pressure, blood sugar, or cholesterol. The studies varied in their exercise plans and were often fairly small.

What this means for you: You do not need to buy a special program or choose intervals to gain health benefits. Choose the style you can do safely and regularly, since this review does not show a clear overall winner.