Regular physical activity has been demonstrated to have positive effects on health. However, over 50% of Europeans rarely perform regular physical activity. Additionally, up to 50% of people starting exercise programs drop out within the first 6-8 weeks, with a perceived lack of time as the most frequent reason.
HIIT consists of repeated short periods of high-intensity exercise and was developed to achieve meaningful benefits in a shorter training time.
A systematic review of relevant databases yielded 55 studies involving 1318 participants. Study risk of bias was assessed using the PEDro scale. Overall, the included studies had a high methodological quality and low risk of bias (35 studies scored ≥6).