17 Sep 2007
A repetition is one actual movement of an exercise through the full range of motion (i.e. one push up, one pull up, one squat, etc.) A set is done consecutively without rest.
One of the most common ways to calculate and measure an individual's progress and strength is to perform repetition maximums for a given exercise.
A repetition maximum is the maximum amount of weight an individual can lift a given number of times before fatiguing. For example, if an individual could do a bicep curl with 50 pounds for 8 repetitions and no more before fatiguing, that weight (50 pounds) is an eight-repetition maximum load.