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josien schreef:Tyrza daar ben ik met je eens, maar hoe zie je het over de rug bollen en het gewicht op de achterhand nemen.
Een paard met een te bolle rug kan volgens mij ook niet voldoende voorwaarts drang hebben en kan daardoor ook niet het gewicht op de achterhand dragen.
Theresa Sandin schreef:Lately scientist have tried to prove that collection is indeed not a shift of weight hindwards to be placed more over the hindlegs. This presumably because they watch a supposedly collected horse, and correctly observe that it does indeed not take any weight back over the hindlegs to relieve the forelegs. (The most famous of which is the Clayton report based on Rembrandt's performance at the Olympics.) But they do not stop here any say:
"Hey, these horses don't shift weight back. How's that?"
But rather they think that
"Since the riders win competitions where collection is terribly important, the horse must be collected. So then collection must not be shifting the weight back, since they don't shift weight back. So let's find out what collection is."
This somersault of logic is backed up with forceplates, and electrodes, computers and lab equipment to measure what clearly the naked eye can see - horses doing movements on the forehand. Everything is recorded to the last ounce.
They don't stop and think, hey, maybe our base data is somehow flawed? Maybe Rembrandt wasn't the most collecting horse ever trained to GP, and maybe she won on other merits than collection?
[....]
Regarding the use of electronic equipment to somehow measure the facts of dressage, Dr Clayton has made some advances, lately, with the help of classical trainer/writer Paul Belasik. The following is from a lecture he gave in 2003:
"...He also spoke of his work with Dr. Hilary Clayton with the force plates. She had multiple international Grand Prix horses do piaffe on the force plate, she also had Mr. Belasik do piaffe and levade on the force plate. This measured the force each foot was using to get off the ground. The results she found were that most of the horses punched down with their shoulders to lift the front feet instead of carrying more with the haunches. Mr. Belasik said he was very nervous about what the force plate would show when he did his piaffe, then levade. He said if it showed that the horse pushed himself into the levade with his shoulders, then everything he believed and worked on for 30 years was wrong. The force plate showed, dramatically in the levade, that the horse lifted the front by taking more weight in the back. The piaffe also showed more pressure in the back and a lightening in the front from collected trot to piaffe. Needless to say he was relieved to have been vindicated. So it does show, through scientific research that the ability to do a piaffe, by lowering the haunches and taking more weight behind, is real and do-able. That the horizantal piaffes we see in the ring are a result of the horses pushing against the ground with their shoulders. "