Which statement is true regarding high-intensity interval training (HIIT)?

High-intensity interval training (HIIT) is well-known for its specific structure, which consists of short bursts of intense exercise followed by periods of rest or lower-intensity activity. This method involves alternating between high effort and recovery to maximize cardiovascular benefits, improve metabolic rate, and enhance overall fitness in a shorter period compared to traditional steady-state exercises.

The brief intense efforts push the cardiovascular system while the recovery periods allow for partial recovery, enabling participants to maintain a higher level of performance throughout the workout. This unique characteristic is what distinguishes HIIT from other forms of training. It effectively fosters improvements in both aerobic and anaerobic fitness and can be adapted to various types of exercises, making it a flexible training option.

The other statements do not accurately reflect the principles or objectives of HIIT. While it does have some impact on flexibility through dynamic movements, that is not its primary focus. HIIT workouts are not confined to a specific duration of one hour or longer; in fact, they can be shorter than traditional workouts while still being highly effective. Finally, while HIIT does contribute to endurance, it is not limited to this goal and also fosters strength and power, making it a more comprehensive training approach.