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Old 12-30-2009, 11:20 PM   #2
Steven Low
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Join Date: Mar 2007
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There's very little difference in activation of biceps in chins vs pulls. It's pretty much what you're used to that you do the best with.

Since the biceps is a bit short (slightly) in chinups it makes it a bit easier through the first ~90 deg of ROM which makes it feel easier, but that's just because in pullups you're getting a little more brachialis involvement. Both are elbow flexors so no big difference honestly.

If you're looking to up the numbers I would alternative endurance days (X sets to failure, pyramids, ladders, etc) with max effort 3-5 reps of ~3 sets weighted pullups.
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