I personally enjoy doing a set of 8. When I say I reach a new PR(bench or squat or DL) I usually just mean that I can finally do 8 reps of it. I could probably do pretty damn heavy weights if I did 1 rep max but I wonder: is it just a vanity thing like “look how much I can lift for 1 single rep” or is it actually something to help me increase my mass? Or would a 5 rep increase mass more?
Top end strength is something you should generally aim to “peak” for i.e. you shouldn’t try to maintain all the time. If you are adding muscle, the average trend for your strength, or potential output of strength (muscle recruitment), should be increasing as well.
For a basic sort of use, you can try using 1 rm as a measurement for the beginning of a training cycle and the end of one. Like say, your 1 rm at the start of a cycle is 135. Now we have a concrete number to base our improvement off. Then we can do whatever the % of 135 allows us to do 8-12 reps or 5 or whatever, for 4-6 weeks. Now let’s use 2 weeks, or 1 week, to train a 3 rep max to prepare for the one rep max day. Let’s say for instance one day you max out your 3 rm, rest two or three days, and then you go for your 1 rm.
Then after this you can repeat the whole 6-8 weeks again, or go into an explosive phase for a few weeks.
That’s a pretty basic way of using the 1 rm. There are other ways of incorporating it into training, like for plyometrics where it has benefits for things like jumping and other explosive movements as those also benefit from increased muscle recruit.
For beginners I don’t know if it should be used though. It can be kind of risky for injury even if you are experienced and in tune with your body. A day with the 3 rm before the 1 rm day is personally for me a nice way to ease into the 1 rm safely. Measuring 1 rm at the beginning of the cycle for a beginner is still sketchy though, and also risky for those returning to activity after a while, or returning from injury.
It’s worth a try for me, I have been consistently going to the gym 2-4 days a week and I take a good monohydrate Creatine with plenty of water throughout the day. Whenever I do feel a bad rep/overly sensitive soreness, I take a 3 day break minimum. I’ll try some of the 1RM bench next time, I’ve actually not tried my 1RM for bench in months, it’s probably pretty decent by now