In other studies, HIIT training in overweight adults has been shown to increase brain-derived neurotrophic factor (BDNF), which has been dubbed the “miracle grow for the brain” and linked to improved executive functioning and memory. In one study, when older men and women performed these types of exercises, they were able to stimulate the hormone responsible for muscle growth, which can help clients maintain lean muscle and sustain energy. HIIT has been shown to have anti-aging benefits, as well. Not only are more calories burned during the workout, the excess post-exercise oxygen consumption (EPOC) or the “afterburn” can result in as much 15% more calories burned. In fact, two main hormones released during HIIT-epinephrine and norepinephrine-are key factors in fat metabolism. Increasing VO 2 max is not only great for performance, it can also help reduce many risk factors for cardiovascular disease.Īnd, of course, when you exercise at an intense level, the caloric burn is high. With the heart beating near maximal exertion, there’s an increase in stroke volume, which improves VO 2 max. We know that HIIT can improve cardiovascular fitness levels. While HIIT exercises don’t take long to perform, they can produce long-lasting changes to your clients’ health and fitness. High-intensity interval training (HIIT) continues to make the “Top Fitness Trends” lists every year-and for good reason.
