Does auto adjusted blood flow restriction (BFR) training improve muscle growth and strength compared to fixed-pressure cuffs? In this first 8-week within-subject study using the Fit Cuffs BFR system, researchers found no meaningful differences in hypertrophy, strength gains, or perceived discomfort between autor and non-auto conditions. When pressure was prescribed relative to limb occlusion pressure (LOP) and training variables were standardized, both approaches produced significant improvements. Here’s what coaches, clinicians, and lifters need to know about auto vs fixed-pressure BFR.