High Intensity Interval Training (HIIT) has been shown to be as effective as longer duration steady state cardio for promoting fitness. A new study published in the journal Medicina dello Sport looks at what can be accomplished with a relatively short 2-week period of HIIT where recreationally active women trained 5 times each week to exhaustion.
Subjects had a variety of values measured before and after the training program. They also took Wingate anaerobic tests twice during each workout. Peak power, time to exhaustion and peak carbohydrate oxidation increased, while rates of maximal fat oxidation remained the same.