Current measurement tools may not be precise enough to definitively identify and quantify individual responses to training.

“I think you know we've we've published a little bit on this topic about you know the the measurements that we have aren't typically good enough to say not only did this group increase muscle size more than this group but this individual increased more than this person but not quite as much as this person and not quite as much as this person that would require a very very good instrument so I think people often take that to mean so you're saying that there aren't individual responders I I'm not saying that at all I'm saying that we we may not have the ability to uh appropriately determine who's who”