01

Deadlift 3-rep max for load.
Rules
Work up to a heavy 3-rep max from the floor, conventional or sumo, double-overhand or mixed grip, no straps. Three reps, no bouncing the bar, full lockout each rep. Scored as a multiple of bodyweight: 1.0×, 1.25×, 1.5×, 1.75×, 2.0× for 1 to 5. Tested first, before any fatigue.
Why it matters
The deadlift recruits more total muscle mass under load than almost any other lift. EMG confirms it maximally drives the erector spinae and the entire posterior chain, the hamstrings, glutes and spinal extensors, at once.[6] That total-body recruitment also makes it the most systemically demanding lift, which is why it is tested first, before fatigue. After heavy compound lifting, parasympathetic (vagal) heart-rate-variability markers are suppressed and do not fully return to baseline for around 48 hours, with perceived fatigue still elevated at 48 hours.[7] We test a 3-rep max rather than a true 1-rep max deliberately. It is still genuinely heavy and a valid strength marker, but it carries far less injury risk than a maximal single, so the whole standard does not hinge on one risky rep.










