Which aspect of training refers to the gradual increase of training demands over time?

The aspect of training that refers to the gradual increase of training demands over time is progression. Progression is a fundamental principle in any training program, as it emphasizes the importance of continuously challenging the body in order to enhance fitness and performance. This increase in training demands can take many forms, such as increasing the amount of weight lifted, the duration of exercise sessions, or the intensity of workouts. By systematically increasing these demands, individuals can stimulate physiological adaptations that lead to improved strength, endurance, and overall athletic performance.

Understanding progression helps in preventing plateaus and overtraining by ensuring that individuals are consistently pushed beyond their current limits, promoting ongoing improvement. This principle serves as a foundation for designing effective training programs tailored to an individual's needs and goals, ensuring sustained motivation and better outcomes in physical performance.