Barto, the article that appeared when I checked was by "Falk Schade, Adamantios Arampatzis, Gert-Peter Brüggemann,
Deutsche Sporthochschule, Köln, Germany. I think you have gravely misjudged the work of these scientists. They are without question the current World's leading biomechanical analysts of the pole vault. They have studied the best vaulters in the world at a number of IAAF World Championships and Olympic Games using three dimensional pole vault analysis techniques and measured the reaction forces under the pole tip at the Helsinki World Championships (including Isinbayeva's World Record vault).
6.50m by Bubka? I would give credence to the scientific validity of it's measurement. Effective height was defined by these investigators as ..."the maximum height attained by the vaulter's centre of mass at the highest point in the free flight trajectory over the bar."
I am not eager to dismiss their attempt to objectively measure the path of the vaulter's CofM and the peak height achieved as indicating that they
Barto wrote:Sorry, but they have a very poor understanding of pole vault.
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You should read their paper. It is enlightening and reflects some considerable knowledge of the pole vault on the part of the investigators. It contains data of inestimable value to coaches of elite vaulters in particular. They have also been keynote presenters and consultants for the worlds leading coaches attending the International Pole Vault Symposiums.
Whilst you are entitled to your opinion I do not accept it.