Dr. Ken Leistner trained Kevin Tolbert for years with various training formats. Many years ago Kevin put together a 600 X 30 Squat and 450 x 15 Stiff-Legged Deadlift (off of blocks.) That means he Squatted 600 for 30 reps, and then went immediately to the Stiff Legged Deadlift and banged out 15 reps with 450.