I have been reading a lot recently about 1RM and how it is a good thing to know about yourself when you are training.
Recently I even found a table that outlines the relationship between 1RM and >1RM in that if I want to do more than 1RM the weight that I should use is expressed as a percentage of the weight I used for my 1RM.
2RM = 95% of 1RM
3RM = 93% of 1RM
4RM = 90% of 1RM
5RM = 87% of 1RM
6RM = 85% of 1RM
7RM = 83% of 1RM
8RM = 80% of 1RM
9RM = 77% of 1RM
10RM = 75% of 1RM .....and so on
My question is, is this a reliable way to calculate how much weight I should be using when I am training in the gym? Obviously when trying to find the right weight to use there is a lot of trial and error involved but I was wondering if using a table like this can help get the answer without having to spend the time trying again and again?
Also, if I plan to be doing multiple sets in an exercise, would that factor into the percent of 1RM weight I should be using (assuming that I am giving enough time to rest in between)?