How much rest is needed between sets?

How much rest is needed between sets?

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How Much Rest is Needed Between Sets?

A University of Kansas study examined the effects of three different rest period lengths on subsequent set performance. Twenty-eight recreational weight trainers participated in this study.

Subjects performed one set of bench press at 75% of their predetermined 1RM to volitional exhaustion. After a randomly assigned rest period of 1-minute, 3-minutes, or 5-minutes, subjects performed another set of bench press at the same percentage of 1rm, to volitional exhaustion.

Results showed significantly fewer repetitions for the second set with all three rest intervals. In addition, the total work performed during the second set was significantly less with the 1-minute rest interval than it was with the 3-minute and 5-minute rest intervals. While all of the second sets produced fewer repetitions, after both the 3-minute and 5-minute rest intervals, subjects were able to perform between 8 – 12 repetitions. Subjects were only able to perform 4 – 6 repetitions on the second set after only a 1-minute rest.

The researchers point out that the population used for this study is recreational weight trainers. Other studies that have used highly trained weightlifters and bodybuilders have suggested that rest periods of one minute adequate for full recovery. More research is needed into the reasons the two different populations had different results.

As the authors point out, rest intervals will depend on training goals. If the goal is to maintain the same number of repetitions in each set, then the rest interval may need to be longer than five minutes. But if the goal is 8 – 12 repetitions, 3 – 5 minutes rest should be adequate.