[usrusr]

I would not limit it to athleticism: men generally tend to lose "broism" and gain "wisdom" as they age. The relative levels of bravado and bookish authority that young boys could admire will therefore vary a lot with the age of the father. In addition to that, children calibrate their perception of normality to however their parents are. Many people believe that they don't want to be like their parents, but this normality calibration influences them nonetheless.