What makes H.I.I.T training so effective as a fat burner is that it produces excess post-oxygen consumption, a.k.a. EPOC. A study performed by Jeffrey W. King of East Tennessee State University showed that H.I.I.T increases the resting metabolic rate for the following 24 hours.
Meaning: the fat-burning party isn't over once you step off the treadmill - it keeps going and going and going!
A study by M. Sanchez Pacheco found that rats which performed high-intensity exercises lost more fat than the rats which performed low-intensity exercise. The rats which exercised at 80-90% of their maximum heart rate lost a significant amount of body fat compared to the rats which exercised at 60-70% of their maximum heart rate.
Many research studies found that long endurance activities like marathon running can cause muscle catabolism, or the breakdown of muscle tissue. Muscle catabolism can sometimes last up to 7 days after the endurance activity takes place.
HIIT training on the other hand, can help increase speed, power, endurance and metabolic rate, helping you burn fat faster. Professional athletes incorporate H.I.I.T into their workout routines because it has been proven to improve athletic performance.
By Obi Obadike -"The World's Most Famous Ripped Model"
Abril Wright- NASM CPT