So you have probably all heard of fast twitch muscles and slow twitch muscles. They have different qualities and as such should be trained that way. If your a great marathoner/triathlete, your probably a slow twitch machine, if you could dunk a basketball and your 5'8" your probably a fast twitch freak. But most of us are somewhere in between, so a quick easy test is as follows.
Test your 1RM max in any type of movement you like. Wait 10 minutes and take 85% of that and see how many reps you can do of that weight.
0-4 reps = fast twitch
5 reps =intermediate
5+ reps =slow twitch
This gives a pretty good indicator of what fiber make up you are for that type of movement. Try it out and let me know what you discover!