Hmmmmmm, me thinks we should turn this into a specific thread that should be bumped repeatedly and frequently:
Ok, here are some of my experiences of right-side / left-side (usually for left handers) dominance:
I first noticed my right side dominance (I am right handed) many years ago when I started practicing Martial Arts. Unfortunately, contrary to what I was told, Martial Arts training did not help the problem, in fact it made it worse.
The Martial Arts that I practiced, Tae Kwon Do and later Karate all included patterns or Kata if you will, most of which did not have an even number of moves/techniques on each side, in fact most favoured the right side.
As a result my kicking ability on my right leg improved tremendously whilst my kicking ability on my left is to this day impaired compared to my right leg. I have for quite some time now been able to execute whipping round kicks to the head on my right whilst not being able to reach head height on my left side, with the same kick.
As for my upper body muscular development, my right arm, deltoids and laterals are all stronger and even slightly larger, again this was not helped by martial arts training as many of my former instructors were ignorant enough to favour attacking with the right side more often.
This is how I tackled the problem most effectively:
Do not start 'overtraining' your weaker side. That is do NOT train your weaker side more often than your stronger side.
DO use exercises that isolate each side: IE: Cut out the bb bench press and do a db bench press instead. In fact with just about any exercise that uses a bar you can substitute db's instead. This will force each side of your body to work independently of the other and will stop your stronger side from assisting your weaker side when lifting. Doing this is in my opinion preferable to working your weaker side more often.
hardgainer (pump)