To steal this thread and branch off for a minute.......:Tendonitis pain is you said, in your wrist and hand. Muscle pain is in your arm. But what do I have? The top side of my arm between my wrist and elbow, just below the skin it seems, gets really tight and kind of numb if I push it too far when practicing, ie: either too heavily, or too long. Now, I think I'm playing from my stomach, and am working on staying relaxed from the shoulders down, but my arm still gets this wierd feeling if I do too much. At first, the tightness stops when I stop playing, but if I continue playing, the tightness will then not go away even after hours of being away from the piano. It also comes back with shorter and shorter amounts of practicing until I take a few days off and let it "heal." What is it??
I understand what you say Bernhard.
But, let´s try a simple experiment.Try playing a five finger simple excercise as fast and lightly as you can (not even stiffening yourself) without stopping. Eventually you´ll begin to notice extensors pain even when you´re not lifting your fingers very high, extensors and flexors are antagonist muscles, when flexors contract then extensors get stretched and viceversa. They work together, but in piano playing, the most common pain are in extensors because they are less developed by our daily normal activities.
So when you play as fast as you can, you´re developing your extensors. If you don´t believe me, please try it, in less than 2 minutes they´ll begin to hurt. You can use Hanon Nº 1 with your right hand as fast as you possibly can, I bet in less than a minute extensors will begin to hurt. No matter how relaxed you are. First you will notice fingers start to get out of exact rhytm ´cause muscles begin to get exhausted, and then you´ll notice a little pain in extensors.
And when you play slow, you´re developing coordination.
In fact what Mei Ting said was:"The simple fact that you practice, and after you practice you can play faster and more accurately (of course that's only one of the effects) means that you are building up endurance and stamina. I'm just trying to point out that if you get muscle pain while you're doing it you don't have to stop IMMEDIATELY, because it's muscle pain. But if you get tendon pains you MUST stop, and massage it, because tendonitis is not something to be played around with."Someone said: "IF IT HURTS, YOU'RE DOING SOMETHING WRONG "Then Mei Ting:"Either that or you just need to build up your muscles. That's what I do.The only "pain" you really have to be careful with is tendons. Muscle pain is not that big of a deal, as long as you don't overdo it. When an olympic athlete is in training they go through lots of muscle pain. Same with piano. But if you start getting tight, stretch. If you start having tendon pain, stop and get a good massage cuz you don't want tendonitis."
Anyway, I was asking wich is more important. Pattern coordination or muscle building?
Bernhard, I´m reding now your post in one of the links you listed:https://pianoforum.net/smf/index.php/topic,3371.msg30141.html#msg30141It´s very interesting. I use some of those methods already. But I think there is the answer to my question.Even about memory lapses!Thanks!