No your triceps and shoulders have alot more to do in punchingpower, your bicep jus brings your hand back
i guess if your referring to correct form (involving legs, hips, etc) but your telling me a stronger tricep or shoulder wont put more on a punch?
work on your balance because even when you do have a lot of power your legs are going to need to be their to let you connect with the punch. I have a lot of power but my balance is **** so its hard for me to put stuff together in the ring.
Punch the Bag, Punch the bag some more, and when you're sick of that, punch the bag some more, and when you've had enough, get off your ass and punch the bag some more. All the while get someone who has a clue what they're talking about to critique you on your body positioning, foot movement, and your follow-through. Make sure you're doing the same things when you're tired, when you're warmed up, and when you're just starting. Some people say that "practice makes perfect." They are wrong. Only Perfect Practice makes perfect.
weak links break chains though. having strength in your triceps and shoulders would only help to continue the energy started in the legs' path to the target. also if you get stuck having to arm punch you'd be happy to have strong arms.
Proper resistance training will help your punching power. Start with developing a strong midsection and back. Also known as your trunk. Then strengthen lower body with squats, lunges. Build your back and hamstrings with good mornings and deadlifts. For upper body, varieties of push ups are good, lat pull downs, rows, varieties of medicine ball tosses and slams, shoulder presses. The sport specific punching exercises. Make sure you are working on strength after you are developing your technique and tactics.
Technigue translates strenght in Punchinpower. The big back muscle is key in upperbodystrenght. Good way to train the big back muscle is doing pull ups.