PALO ALTO, Calif. — Inside the Stanford weight room earlier this football season, there were weight vests and wooden sticks and core boards. There were kettle bells and roller pads and something called a Bod Pod, a white, egg-shaped contraption that measures body fat.

There were football players, too: pairs with legs bent, a towel held between them for balance; others climbing ropes like back in gym class; working on hip mobility and shoulder stability; the focus not on brute strength, even for a team as physical as Stanford.

And there was Shannon Turley, the architect of a training regimen among the most distinct in college sports. He is Stanford’s director of football sports performance, and for years, he felt it necessary to write letters to N.F.L. scouts to explain the Cardinal’s nontraditional approach. He stopped that practice this year in the wake of Stanford’s success.

Turley’s impact speaks as much to availability as ability. The coaches recruit speed and size and talent. He believes the best players, the ones most on the field, who sustain the most collisions, also carry the most injury risk. His first priority is to keep them on the field.