[starsailor]

Hi Skrik, sounds like you're just cramping up a bit during playing could be partly due to tension but it's also because you're putting more pressure on those muscles, if you aren't getting a long term problem it's probably just fatigue but if you think it's getting worse you should consult a doctor, or a physiotherapist, here are some things that can help you build up hand strength, it's also good to do warm ups, when you see athletes before a race you see them doing stretches and running up and down on the spot etc. if you do anything from a cold start it's not good you need to get those muscles warm.
Give your hands a rest during practice not for ages just to give them a few minutes to recover, so play a bit, rest play a bit, rest, gradually over the weeks your hands should get fitter. You should be able to get all these products in Norway

Jelly hand exercise balls - Exercise Aids - Exercise and Rehabilitation - www.youreableshop.co.uk

BLACK GRIPMASTER Hand / Finger Strength Exerciser,Climb on eBay, also, Other Climbing Mountaineering, Climbing Mountaineering, Sporting Goods (end time 23-Mar-08 20:00:00 GMT)

Wrist Hand Arm Iron Exerciser Gripper Martial Arts PAIR on eBay, also Resistance Bands, Fitness Accessories, Exercise Fitness, Sporting Goods (end time 17-Mar-08 17:45:00 GMT)

Here's a short list of arm related injuries and the tell tale signs, it is important to be aware of these and see a doctor if you have any concerns

http://familydoctor.org/online/famdo...interview.html

Best Wishes and don't push yourself too hard

Chris