High-Intensity Interval Training (HIIT)

High-Intensity Interval Training (HIIT) is recognized for its potent impact on cardiovascular fitness. It has been shown to significantly enhance VO2 max, reduce resting heart rates, and lower blood pressure. For example, studies have documented a 9.4% increase in VO2 peak for individuals with heart failure and notable blood pressure reductions in postmenopausal hypertensive women. HIIT's efficiency surpasses that of traditional moderate-intensity continuous training (MICT), offering greater improvements in a shorter period. Furthermore, HIIT enhances endothelial function, as evidenced by increased levels of nitric oxide and vascular endothelial growth factor (VEGF) in the body.