thats a good question that might gather more responses under the health forum or the general forum.
if your asking specifically in relationship to muay thai, i unfortunately know very little. but i do know a good deal concerning general sports and martial arts cross training. i spent the last two years studying anatomy and excercise physiology to help my fiance through school.
weight training is funny, everyone has different results as far as building mass and how that effects quickness and range of motion, but its in almost every proffessional athletes workout regimen, so you can safely say that there is a right way to weight train for almost everything.
in my case, and this is generally true-as long as you dont overdue it, youll have nothing to worry about. most excercises can be done for mass and power, or for endurance, simply by altering the amount of sets and repetitions.without getting into all the silly details about percentage of maximum and body weight ratios, if you are just starting or getting back into it, concentrate on proper form, full range of motion, and control, many excercises, are better if performed very slowly rather than exploding through your reps.
before this gets into the ubiquitous "how to lift weights" discussion, lets talk about some martial arts specifics.
do not neglect to stretch-for many people, they lose range of motion and quickness because they dont stretch. simply put, lifting wieghts spurs new muscle growth-the new muscle fibers grow back together as tightly as possible, by stretching, you can pull them apart thus increasing your range of motion. also, keeping them stretched will keep you from getting to bulky too fast.
in addition to stretching its important to build up your quickness. because muscles have memory, if you stretch regularly they will stay stretched and if you practice explosive quickness, then they will fire quickly and the result is alot of power behind that fist or foot. or knee and elbow if you are muay thai
this is starting to run on so if you have specific questions i will try to answer them as best i can
:asian: