This is how you
use the table. Find the number of reps to concentric failure that you can
perform with a certain weight. In other words, if you can only do eight reps
with a certain weight and could not possible do another full rep, that is
your point of failure. Find the percentage associated with that number of
repetitions from the table above.
Now, divide the
weight that you can do by that percentage using decimals (83 percent equals
.83) and that will give you an approximation of your one repetition maximum.
For example, if you can perform 10 reps with 175 lbs. in the bench press,
that means that 175 lbs. is 75% (0.75) of your one repetition maximum. So
you would take 175 divided by .75 and that would equal 233 lbs. You should
probably use your calculator, we knew a guy who did it in his head and said
he could bench 3000 lbs. Good luck!