The 1RM Calculator is a tool used by many Strength & Conditioning professionals to predict maximal lifts based off of sub-maximal weights lifted for as many reps as possible. The theory is that it provides a safer way to test maximal lifts, especially for athletes whose goal is to prepare for traditional sports. There are a few versions of the predictive 1RM Calculator, based off many clinical studies, and there are even easy to use plug-ins like this one. I have found them all to be wrong.
Today Armand Lotman performed 10 Back Squats at 361#. That would put his predicted 1RM at approximately 481#. I know Armand, he is a beautiful gentleman, and an excellent athlete. I also know that he doesn’t have a snowballs chance in hell of squatting 481#. Now…I could be wrong, he could send me a video of a 550# squat next week, but I don’t expect it. Please don’t take this as me somehow saying that Armand is not a great squatter, because he is. He’s recently Front Squatted 405#, and I know he’d be really close to that 481#, but the predictive calculators don’t work in our sport.
I’m wondering if anyone has any theories as to why this is true. I’m not looking for the typical “we have more endurance” answers. Think it through, kids.
Armand Lotman – 360# Back Squat X 10 reps:
1) Every 30 seconds for 5 minutes (11 total reps):
1 Power Snatch @ 80% (of max Snatch any style)
2) Every 30 seconds for 5 minutes (11 total reps):
1 Power Clean @ 80% (of max Clean any style)
Row: 3X1000m – rest 1:1 – 30 burpee penalty for every set that deviates +/- 5 sec. from the fastest set.
Run: 4X800m – rest 1:1 – 25 burpee penalty for every set that deviates +/- 5 sec. from the fastest set.
Swim: 5X100m – rest 1:1 – 20 burpee penalty for every set that deviates +/- 5 sec. from the fastest set.
Notes: All work should be at 80-90% RPE.