This document discusses the principles of physical training and their application. It identifies 11 components of fitness - including strength, speed, power, balance and endurance. It then explains several key training principles: frequency refers to how often one trains; intensity describes how hard one trains; and duration is the length of training sessions. Applying the right frequency, intensity and duration of training is necessary to create an overload and drive adaptations, while avoiding injury or overtraining. The document also outlines different training methods like resistance training, flexibility work, and plyometrics that target specific fitness components.
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