Ingram, damn you're so clever. I didn't realize average human being should train the same way as pro bodybuilders...my bad!
"No, not necessarily, though I would favor chins over pulldowns."
Not necessairly? They're always superior.
" but there is certainly a place for them in most routines. Just a few examples: Westside incorporates isolation moves, Poliquin uses them in his routines, and Bryan Haycock includes them in his hypertrophy-specific routines. There are plenty more examples. "
Examples don't disprove simple physiological facts. Since when does WS use leg curls as a main exercise [other than recuperation?]. I'm pretty sure Charles Poliquin does NOT advocate leg extensions either.
-Zulu