Which training method involves varying the intensity and volume of exercise over a certain period?

The training method that involves varying the intensity and volume of exercise over a certain period is periodization. This approach is designed to optimize training results and reduce the risk of injury by systematically altering the training variables—such as load, volume, and frequency—throughout different phases or cycles. Each phase serves a specific purpose, like building strength, enhancing endurance, or allowing for recovery.

Periodization is crucial for athletes and those engaged in rigorous training, as it helps to prevent plateauing and promotes continual progress by aligning training loads with specific goals and timelines. By intelligently managing the workload and recovery, individuals can achieve peak performance at the desired times, making periodization a fundamental concept in effective training programs.

The other methods mentioned focus on more specific training strategies without the structured variation in intensity and volume that periodization embodies.