HIIT Reduces Cardiovascular Disease Risk Factors

High-intensity interval training (HIIT) involves repeated bouts of high-intensity exercise interrupted by rest. HIIT builds aerobic and power output capacity more quickly than traditional, moderate-intensity training. A meta-analysis from the University of Santiago in Chile, that combined the results of seven studies, found that HIIT was more effective than traditional aerobic exercise for reducing blood pressure and increasing aerobic capacity in obese teenagers. Exercises such as HIIT and weight training are often the best ways to train overweight people because they often have more muscle mass than their peers— which gives them a relatively high power output— but poor stamina. HIIT gives them the chance to build fitness quickly, without the drudgery of prolonged exercise. (Obesity Reviews, published online March 7, 2016)

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