The deadlift split squat is a great low body exercise if you want to really focus on the quads. This is a constant tension movement – the quads never get a break, and that's great for hypertrophy.
Simply split squat or lunge over a barbell, grab the bar, and stand up. Switch legs and repeat for reps. Focus on your legs, particularly your quads, and minimize lower back action.
As a bonus, this variation requires more torso stabilization so you'll get some core work too.
American Chet Yorton, although not as big as Arnold, ran circles around the young Austrian with his vascular, striated physique, exposing the Oak as the amateur he was. Yorton's ripped, rugged, and dense appearance forced Arnold to settle for a distant second place finish.