Originally Posted by millerizer

Ive even read articles for testing 1RM where you load 110% or so and just lift off and hold the bar prior to doing your max effort. So I would assume.. lifting 90% of your max once could be beneficial if you were doing your working sets at about 80%....

Havent really tried it though since it would take extra work//amount of time to work up to the final warm up set which actually exceeds the weight of the working set...