The training theory that exercise is relative to the ability of the person conducting the training.
How difficult it is to complete a muscle movement over a number of repetitions given a specific weight.
A form of training that utilizes repeated cardiorespiratory effort intervals performed above intensities achieved during continuous training. Interval efforts are followed by cardiorepiratory recovery intervals.
The muscle action that occurs when a muscle is contracted but stationary resulting from equilibrium between the muscle force and resistance.