Is High Intensity Interval Training More Effective Than Regular Cardio?

By Howe Russ


High intensity interval training is undoubtedly one of the most talked about weight loss tips of the 21st century. But if you are unsure why so many gym lovers are jumping on board the HIIT train, you're about to find out the main reasons.

Today you will discover the science behind HIIT and the reason it has become such a practised method in gyms around the world over the last few years.

Although it has only recently crossed over in to mainstream society, HIIT has been used for nearly three decades. It was previously widely believed that cardiovascular activity performed over a long distance at a steady pace was better for both endurance and fat loss. However, recent studies have blown these old theories out of the water.

To go back to the roots of HIIT, you need to look at the two studies which brought it into the public eye. The first of which dates all the way back to 1985. Initially designed to test if exercises helped speed the metabolism, scientists noticed that most of the weight loss results were from individuals working harder in the gym. A further study confirmed this, with three weekly HIIT sessions outperforming five regular cardio workouts for fat loss, despite those workouts being twice as long.

That was the starting point for HIIT. Since then, many sprint coaches and swimming trainers adopted the approach to help their athletes increase their explosive speed in their selected events and HIIT gradually made it's way into the world of mainstream gym training.

After initially becoming popular during the 1992 Olympics when many sprinters adopted the approach, the first major breakthrough for fat loss studies didn't arrive until 2001. While the fully expected to confirm that HIIT increased the breakdown of carbohydrates, they didn't expect to discover that it also increased fat breakdown, too. Also, they were shocked to see that this increase in fat burning lasted for 14 hours in some subjects. []

By increasing the production of HADH after each workout had finished, the body is able to switch to using fat for fuel over the course of the next 12-14 hours.

The study went on to show that it also increased lean muscle mass and prevented muscle breakdown during exercise. The best result of the study, however, was the fact that the HIIT group burnt off over six times more body fat than their steady state cardiovascular counterparts. This showed that one calorie burnt during a HIIT workout was equal to six during regular cardiovascular activity.

These startling results have since been backed up by many further studies. In fact, over the last few years this training method has crept it's way into many mainstream gyms around the world and it now appears to have earned it's place among proven fitness techniques.

Like all new fitness concepts, high intensity interval training has recently made it's appearance in the mainstream. This can lead to some labeling it as a passing fad but, having seen the mounting evidence behind it's effectiveness, you now realize that HIIT can become one of the most productive weight loss tips for those who are prepared to learn a little bit about it before jumping in.




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