Pull over expand rib cage?

[Sciath]

I've been doing pushup plus and pullovers to increase my serratus anterior because my shoulder blades stick out. Its been helping, but I read that the pull overs will expand my rib cage. I use a 20 pound dumbell when doing it, and since my ribcage is already pretty big I'm thinking I should stop. I'm 18.

 

[limestix]

I don't think you should be too concerned about 20 pound pull overs expanding your rib cage

my2c

 

[davidjr74]

I've been doing pushup plus and pullovers to increase my serratus anterior because my shoulder blades stick out. Its been helping, but I read that the pull overs will expand my rib cage. I use a 20 pound dumbell when doing it, and since my ribcage is already pretty big I'm thinking I should stop. I'm 18.

I read a T-Nation article on this and this does expand you rib cage a bit and gives you a little more air in your lungs. Search it on T-nation and read more about it- I don't know the exact details.