Martial Arts Grip

Ive been practicing karate for 7 years and 6 months ago i started lifting weights, grip is really important in most(if not all) martial arts
Is there any excercise that you guys know of that improves your GRIP.

 I mean excercises that gives you iron fingers, crushing an apple with one hand  hehehe

If you check out the Excellent Postings section, Under the "Advanced" section, you should be able to find both of my grip strength guides which will give you some ideas.

The finger curls are a good exercise, and build up open hand crushing grip as well as the extensor muscles. You just need to be careful that the weight does not roll out of your hands. I usually do them with 100kg on a barbell for a few reps (Strength, not mass) and they really challenge your finger strength greatly.

Thick bar pullups/deadlifts/rows are another great exercise for overall hand strength. As they train Open hand crushing grip and the forearm extensors at the same time. Many people when doing hand training focus on just the flexors and end up with painful hands due to muscle imbalances (It happened to me when I used grippers too much), as no exercises that bodybuilders regularly do train them, and 1 inch bars mean you have to do very specialist exercises that people either havent heard of or dont do. Thick bars are better because they make all exercises train them.

Open Hand Crushing grip is where your thumb and fingers barely meet or dont meet at all when gripping something. Much like someones forearm, shoulder, leg, body etc etc. So developing masses of power in this type of grip is a massive benefit to any grappler, as they will be able to transfer their body power much better to the opponent. If you find your hands coming off your opponent during throws when you are gripping them, it's because your hands cannot support the power your body is putting in, so you cant transfer it all. If your hands are attached like superglue through your own hand strength throughout the whole movement, all your force is going into your opponent, which means you can either land a devastatingly powerful throw, or you can use less energy to do the same throw, because it is now moving more efficiently.

I use captains of crush grippers and they are fine, but they are not the best overall training tool. Thick bars are, but I would suggest getting fat gripz if you are interested in thick bars, as not only are they cheaper than buying a thick bar, they can also be used on cables, dumbells, barbells, kettlebells, pullup bars, wrist rollers etc.

Phone book tearing, nail bending etc have a lot to do with wrist strength, not just grip strength.

I have bent a couple of cold rolled 6 inch nails with my hands, and they test your wrist strength much more, although it depends on which grip you use to bend the nail.

do pullups with your gi, rope climbs, maybe consider purchasing fat grips, thats pretty much it.

I usually do it on my back day, although I do it whenever I feel like it to be honest. However no matter how much grip work I do it wont affect any of my lifts, because my hands are that much stronger than my body... So I would suggest for you to either do them on your back day after the workout, or if you are too tired, do them on a rest day after the back day.

Hmm well i just switched from pullups to towel pullups and i just add weight like you would normally to normal weighted pullups execpt mine are towel grip

so yeah. And as the weight increases the grip strength increases. I try to make my towel dry so its harder to grip. Hopefully this grip strength will help when i join judo in like half a month!