I would like to check my 1RM, but have the following questions:
1. How to properly test 1RM of an exercise? I was told generally to warm up with several sets of about 8 reps, then approximate a max and try to lift it more than 1 rep, if not successful then that is the 1RM, but if successful then try a heavier weight. My concern is, would the warm up sets and the trials fatique me enough to be able to lift the actual max? Is there any better way to test the 1RM?
2. Is it necessary to test 1RM for all exercises that we constantly use, or are 1RM values only applicable for major or basic exercises (not for isolations)?
3. If it is necessary to test 1RM for several exercises, is it recommended to test them in one workout session, or should we test just 1-2 exercises per session (maybe to avoid inaccuracy for the later exercises)?