Does Working on the Heavy Bag make your shoulders and back bigger and stronger?

[Pony Boy]

Hell yeah, it does make your shoulders and back stronger and bigger.

[Psycho012]

In the end, the ones who hit the heavy bag lost significant speed but gained a lot of power, and the shadowboxers lost significant power but improved their speed greatly. Both have to be done equally to maintain speed and power at a maximum

I don't agree with you, give us a link to that study.You can't have power without speed.Working on heavy bag will only help u with these two aspects.Hit it fast for gaining combination speed, and hit it hard for power...simple as that.Heavy bag, next to the mitts is an ultimate boxer's tool.

[mr tricky]

/

By making both ones arms and shoulder absorb shock over and over and over again, you will gain mass that WILL affect your speed. Of course, this can be a good thing or a bad thing depending on how you box and in what weight league.

this guys talking **** ingonre him
you wont lose speed lmaooo
and it has nothing to do with absorbing shock which increases growth

mabey if youve been using the heavy bag for a long time , you muscle mass may have incrased from using your muscles more and focing them to grow ect,
but if youve just started using it , its probably phychological