Final answer:
High intensity interval training can indeed produce noticeable results in a minimal amount of time by utilizing the principle of overload, similar to how increasing the weight in strength training leads to muscle growth.
Step-by-step explanation:
High intensity interval training (HIIT) can produce noticeable results in a minimal amount of time. This is true because HIIT workouts involve short bursts of very high-intensity activity alternated with periods of rest or lower-intensity exercise. This type of training boosts the intensity of exercise, which is essential for effective strength training, as mentioned in the question. Increasing the exercise intensity is necessary to challenge the muscles and stimulate growth and adaptation, which can lead to increased muscle size and improved fitness levels.
Just as with strength training, where to progressively build muscle it is essential to increase the weight lifted incrementally, HIIT relies on the principle of overload to produce fitness gains. The short but rigorous work phases in HIIT push the body to a high level of exertion, creating physiological changes that can lead to improved endurance, strength, and metabolic rate. This training methodology aligns with the principle that to increase muscle mass or fitness, the body must be subjected to stresses that it is not yet accustomed to, encouraging adaptation.