Knees-to-elbows - how many sets & reps?

[Lifter]

Rip,

How many sets and reps of knees-to-elbows would you recommend? I'm on the third novice program in PP2 (p 106).

[Mark Rippetoe]

How about no sets and no reps?

http://startingstrength.com/articles/abs_rippetoe.pdf

[wingnut4772]

Interesting article. Thanks.

[billymallory]

I've looked for the 90 degree bench you speak of in the article with no luck, just wondering where you'd find one for sale?

[Mark Rippetoe]

Dunno. I've had this one quite a while, MAC Barbell made it. We'll ask.