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Related to interval training: circuit training
in·ter·val train·ing(in'tĕr-văl trān'ing)
Application of highly structured exercise with rest intervals using "supermaximum" effort to overload the specific systems of energy transfer; allows performance of inordinately high exercise intensities with minimal fatigue.
A form of physical conditioning in which periods of high-intensity exercise alternate with periods of lesser exertion or rest and recovery.
See also: training