While most countries saw their sport-science research nearly dissapear after the cold war ended, a united Germany continued with the same determination ever since and have pushed out new studies with regularity. Just last month, an Egyptian doctoral student Marwa Sakr completed a doctoral dissertation at the Universität Konstanz in Southern Germany focusing solely on the biomechanics on the women’s hammer throw. After hearing about her initial plans two years ago, I was eagerly awaiting the results.

Betty Heidler, Kathrin Klaas, and Mareike Nannen show off the study’s measurement equipment.
Sakr’s research in many ways was an extension of Koji Murofushi’s research from several years ago. She created a device similar to Koji’s to help measure the energy throughout the throw. But the focus of her work was not simply measuring the kinetic energy levels throughout the body and hammer during the throw, but also to look at how the energy moved sequentially through the human body by looking at correlations between the energy levels of different parts. This was the first time a study has looked at the kinetic chain in the hammer throw and it is built upon the “kinetic link principle” which says that segments reach their maximum of speed consecutively beginning with those at the far end of the kinetic chain. In other words, the theory is that the kinetic energy travels from the ground up and into the hammer.
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