Effects of High-Intensity Interval Training on Functional Fit-ness in Older Adults: A Randomized Controlled

This study investigated the effects of high-intensity interval training (HIIT) on functional fitness in older adults. As people age, they often experience a natural decline in physical abilities such as strength, flexibility, balance, and endurance, which can limit their ability to perform daily activities independently. Finding safe and effective exercise strategies to maintain or improve these abilities is critical for promoting healthy aging and preserving autonomy. In this study, older adults participated in a structured HIIT program adapted to their functional capacity. HIIT consists of short bursts of intense physical activity followed by periods of active rest. This type of training is known for improving cardiovascular and muscular fitness in a short period of time. Participants were assessed on various aspects of physical function before, during, and after the intervention. Tests included handgrip strength, upper and lower body strength, flexibility, aerobic endurance, and mobility. The results showed that HIIT significantly improved physical function in older adults, including increased muscle strength, flexibility, aerobic capacity, and agility. These findings suggest that HIIT can be a safe, efficient, and accessible option to promote health and independence in the aging population.