Something neat to pass on (and your thoughts, of course!)
An Exercise Physiologist recently told me that 1-rep max calculations and/or extrapolating various rep numbers to estimate the 1-rep max was “okay” but did not take into account the differences in individuals AND in the make-up in their individual muscles.
So…in their lab, over about a 2 week period, they simply add weight slowly to various core exercises until an individual reaches their actual 1-rep max for that exercise. (They spot, of course, and make sure that it is a safe and slow process). He states that this gives them a truer reflection of a person’s INDIVIDUAL 1-rep max.