Which term describes the concept of placing greater demands on the body during training?

The correct answer is the "Overload principle." This term specifically describes the concept of placing greater demands on the body during training to achieve improvements in strength, endurance, and overall fitness. The principle of overload suggests that in order for the body to adapt and grow stronger, it must be subjected to stress that exceeds its current capabilities. By progressively increasing the intensity, duration, or frequency of workouts, individuals can stimulate physiological adaptations that enhance their physical performance.

Understanding the overload principle is essential for creating effective training programs, as it ensures that clients continually face new challenges that promote growth and prevent plateaus. Without incorporating some form of overload, progress can stagnate as the body becomes accustomed to the same level of stress.

Other choices, like adaptation, refer to the process that occurs as a result of the overload principle, but they do not describe the act of placing greater demands on the body itself. Effort can relate to the level of intensity applied in a workout but does not specifically denote the systematic approach to increasing training demands. Intensity adjustment may capture aspects of training but lacks the specificity of the overload principle in defining how greater demands are applied over time.