Quad Exercise - "Smith Sissy Hack Squats"

Here's a quad exercise I "invented" although I doubt I'm the first to every do it. A blend of a Barbell Hack Squat (except on a Smith machine) and a sissy squat where you allow your heels to come up - a double whammy for quad activation.

General thoughts:

-A great exercise for pre-fatiguing the quads, esp. if knee extensions are painful (e.g., patellofemoral syndrome).
-Great for a high reps set like a DoggCrapp style widowmaker.
-A good exercise for folks who tend to get a lot of ham and glute activation on compound "quad" exercise like squats.

(Unfortunately, youtube trolling has forced me to remove comments.)

Form notes:
-Obviously don't do them if they cause knee pain, but this may be remedied by adjusting stance, etc.
-Start with a narrow stance with knees out front or to the side (ala an Olympic style squat) - whichever is more comfortable.
-Position feet slightly under you (not out in front), so that you can keep an upright posture. (Experiment to find what's right for you.)
-Keep your body upright.
-Allow your heels to come up like a sissy squat, but maintain a solid base.
-Start with light weight and work up. (You won't need much weight on this one.)
-Go deep!!!

Go to intensemuscle.com to comment on this exercise. Thanks!

-Scott