Which of the following is NOT one of the basic principles of training?

The basic principles of training are fundamental concepts that guide the development and implementation of effective training programs. The commonly recognized principles include Time, Intensity, Type, and Frequency. Among these, Time refers to the duration of training sessions; Intensity relates to the level of effort or exertion applied during exercises; and Type pertains to the specific activities or training modalities used, such as aerobic or strength training.

Variability, while an important consideration in training to prevent monotony and promote adaptability, is not typically categorized as one of the foundational training principles. Therefore, it does not fit within the standard framework established for designing effective training regimens. Recognizing these principles is essential for developing a balanced and well-structured training program that maximizes performance and minimizes the risk of injury.