HIIT Increases Fat Oxidation

HIIT Increases Fat Oxidation High Intensity Interval Training is popular with active adults who appreciate an intense workout even when they're short on time. The results can equal what you'd get out of a less intense workout lasting twice as long. A study published in the journal Medicine and Science in Sports and Exercise examines what added intensity brings to your game.

Researchers had inactive female subjects in their mid-20s engage in high or moderate intensity interval training on a stationary bike. The high intensity workout was performed at 80% to 90% of capacity while moderate cycling was restricted to 60% to 80% of maximum effort. All subjects completed six and ten 60-second sets separated by active low intensity recovery. They trained three times weekly for a total of 12 weeks. Fat oxidation was more dramatically increased with HIIT, but neither group realized significant improvements in body weight, fat reduction or waist circumference.

True Strength Moment: The study brief didn't mention anything about diet, so it's hard to know what these subjects were eating during the 12-week program. Fat oxidation was increased for both groups, so that's a positive development. Unfortunately, it only makes a difference if training efforts are complemented by sensible eating.
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