the strongest athletes

According to a woman that worked in the same office as me, the strongest athletes are:

horse jockeys


Not surprisingly, she rode horses herself. I didn't know her well enough to learn whether or not she trained them, rode them competitively, or what her experience with horses or horse racing was. I mostly just remember her saying (essentially) that horse jockeys were the strongest of athletes as they trained to race on 1,000+ lb. animals. She had a point: jockeys aren't so much sitting upon their rides but are in a continuous squatting position around the entirety of the track. And as humans, smaller of stature at that, they are controlling the actions of much bigger creatures. Besides, how can we definitively measure how strong an athlete is anyway?