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To determine whether the perceived tightness scale could be used to set sub-occlusive blood flow restriction pressures. A secondary aim was to determine variables that may impact individual ratings. One hundred and twenty participants completed three separate conditions in one limb within the upper and lower body. Participants were asked to rate their perceived tightness for two of the three conditions, regarded as moderate pressure without pain (7/10) and intense pressure with pain (10/10). A third condition, arterial occlusion pressure, was completed that required no rating from participants. Order of conditions and limb assignment were randomized for each participant. Measurements for muscle and fat thickness along with limb circumference were completed on the tested limbs. Order of conditions did not affect results in the upper or lower body. A condition effect was found for …