Scientists from the University of Physical Education in Poznań, for the first time in the world, analyzed five ballet positions using the sEMG and BTS Smart research methods. The analysis of the conducted research was published in the renowned journal PLOS ONE.

Scientists Dr Joanna Gorwa, Dr Eng. Jarosław Kabaciński, Dr Michał Murawa and Dr Anna Fryzowicz studied the ballet school students in two groups, using two research methods: sEMG and BTS Smart. One group was characterized by a greater range of motion in the hip joints (in the world of dance so-called opening) HER (hip external rotation), the other presented a smaller range.

The electromyographic study showed that a group of students who have a smaller “opening” have achieved the technical correctness of classic positions by involving more muscles. They also use an inverted mechanism to perform the positions: “from the feet up”, while those with a natural ability to move their hip, do it “from the hip”.
More: https://www.awf.poznan.pl/pl/lista-aktualnosci/newsy-2020/5058-cenne-badania-naszych-biomechanikow-w-swiecie-baletu