Question 1

Which 1RM formula is the most accurate?

Accepted Answer

None is best for everyone. Studies comparing them, such as LeSuer et al. (1997), found accuracy varies by lift, so the average is a sensible default.

Question 2

Can I use reps in reserve instead of going to failure?

Accepted Answer

Yes, add your reps in reserve to the reps completed before calculating, although this adds some uncertainty.

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