ELASTICLY LOADINGH THE FINGERS

Hi, I find it difficult understanding the mechanism of why curling or having very high tonus can elastically load the fingers-if its curling and then release i understand but if i am playing the second finger for instance, on a note from above the keys by lowering the entire arm,curling the 4th and fifth fingers, the second does feel more powerful with higher tonues before i actually play the keys,but how is it possible that by making higher tonus like that or by just holding the fingers, i stretch nor the tendon nor the muscle,but it is still elastically loaded,and it affects the way the finger and hand approach the keys before playing..???? Thank you

You have discovered the biotensegrity effect! I write all about it in the 4th book and am still making new dscoveries... It is a very exciting time as we are making huge changes to our understanding of anatomical function. Do some research on biotensegrity. AFF

Not discounting anything else, but there is a very simple answer here. As the knuckles are all interconnected, they fall very easily if the second finger alone does all the work of keeping them elevated. Drooping knuckles carry speed but fail to transmit it to the key (by nature they are travelling faster than the tip, which is not receiving their speed). See the illustrative diagrams and deeper explanation here Although the other fingers typically engage in panic lifting to help combat a collapsing 2nd, they can scarcely do a jot to stop the whole knuckle bridge collapsing, and thus movement is passed incredibly poorly to the key. Most of the energy will go to the keybed. Even bending the fifth finger alone inwards (or reaching out forwards too) will provide meaningful assistance to stopping the whole knuckle bridge gaining on the tip of the second finger. This time, whatever speed the knuckles travel at is actually passed to the tip of the finger (or at least, a good deal less is lost in compression). Whatever the internal anatomical issue is, more speed reaches the key and with less effort to resist collapse. But I can definitely feel my fifths finger becomes able to make a meaningful contribution to eliminating the whole hand collapse. The work is shared out more. As I say, I'm not looking to argue against any more complex issues, but this issue can give comprehensive rational understanding of why the piano itself behaves differently. It's a simple difference in how much movement is actually passed to the key.