Silvio Lorenzetti studied physics, mathematics and astronomy. The topic of his first Ph.D. in astrophysics (Uni of Bern) was the determination of the exposure ages of meteorites. During the second Ph.D. (ETHZ), a new method to determine the Young's modulus of single trabecula was developed. He became Private Docent at ETH Zurich the area "Biomechanics" especially Sports Biomechanics. He is now the head of the section Performance Sport at the Swiss Federal Institute of Sport Magglingen SFISM.