What training method involves a gradual increase of resistance over time?

The training method that involves a gradual increase of resistance over time is progressive resistance training. This approach focuses on the principle of progressive overload, which is fundamental for muscle growth and strength improvement. By systematically increasing the amount of weight or resistance used in exercises, individuals can challenge their muscles, encouraging them to adapt and develop over time. This method is essential for enhancing strength, hypertrophy, and overall physical performance, making it a cornerstone of effective resistance training programs.

In contrast, static stretching primarily involves holding a stretch position to improve flexibility and does not involve any increase in resistance. Plyometric training emphasizes explosive movements and power rather than gradually increasing resistance over time. Endurance training focuses on improving cardiovascular fitness through sustained aerobic activity, rather than adding resistance to enhance muscle strength. Therefore, progressive resistance training distinctly aligns with the concept of gradually increasing resistance as a core component of training.