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interval training

noun
1.
an exercise and training program in which each session consists of periods of intense exertion alternating with periods of rest or lighter exertion.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for interval-training

interval training

noun
1.
a method of athletic training using alternate sprinting and jogging Also called fartlek
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for interval-training

interval training

method of competitive training in which rest and exercise intervals of controlled duration are alternated. Rest intervals allow time for the athlete's pulse rate to return to near normal before beginning the next exercise period. During exercise intervals, the athlete performs at a specified level of performance, slightly less than his best effort. Interval training is frequently used by track and competitive-swimming coaches

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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