Question...When fighting, does weight lifting play a factor??

I'd say lifting light weights with more reps would be beneficial. It will give you strength but wont bulk you up too much. If you're too bulky, it will hinder you're range of motion...Unless you're Mike Tyson, he was bulky as fukk I think it should be the other way around since the 8-12 rep range are the mass-building range, while the low rep range of 4-6 reps (on your heavy sets) are the ones that give strength without making you too bulky. Anyway I think adding moderate weightlifting to a boxer's routine can help increase their punching power. Btw, during his prime Shane Mosley was mentioned to have bench pressed 350 lbs, so I guess that could be a factor in his punching power. He was also mentioned to squat 500 lbs.

I'd say lifting light weights with more reps would be beneficial. It will give you strength but wont bulk you up too much. If you're too bulky, it will hinder you're range of motion...Unless you're Mike Tyson, he was bulky as fukk

lifting heavyweights will slow you down

It depends on the situation. Sometimes, lifting too much and bulking up can play an outcome. In the sense that it strains mobility and can slow you down. It can also make your arms feel/get heavier and thus get you arm-weary at a quicker rate. However, if done correctly, it can help you out. It simply depends on your regimen. I agree with the above... to add id say avoid heavy weights by low reps, especially in the arms/shoulders(may slow u down as said above)....use lighter weights and do your sets as quick as possible in an explosive fashoin... u could try heavier weights for squats maybe.... all top fighters now have strenght and conditioning coaches....simply hitting the bag and running etc wont cut it anymore...best of luck with ur training...and mind ur back, strecth it and do plenty of core excercises or ul end up on the shelf for 9 months like me.

You're thinking of it the wrong way. When you think of weight training you are thinking of muscles and added size. That is not the only application for resistance training. As it relates to competitive sports you would incorporate applications that improve reaction time, explosiveness, endurance, etc., in conjunction with functional strength.

it helps.... to a degree. more like controlled weight lifting. that way, you get the added strength, but not up to the point that you bulk up and it would impede in your punching speed and versatility.

Sure it does They dont really weight lift but strength train

It depends on the situation. Sometimes, lifting too much and bulking up can play an outcome. In the sense that it strains mobility and can slow you down. It can also make your arms feel/get heavier and thus get you arm-weary at a quicker rate. However, if done correctly, it can help you out. It simply depends on your regimen.