Ernst Gräfenberg Ernst Gräfenberg Ernst Gräfenberg (September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City, United States) was a German-born physician (medical doctor) and scientist. He is known for developing the intrauterine device (IUD), and for his studies of the role of the woman's urethra in orgasm. The G-spot is named after him. Gräfenberg studied medicine in Göttingen and Munich, earning his doctorate on 10 March 1905. He began working as a doctor of ophthalmology at the university of Würzburg, but then moved to the Department of Obstetrics and Gynaecology at the University of Kiel,
Ernst van Aaken his tasks to further women's athletics Ernst van Aaken Ernst van Aaken (16 May 1910 in Emmerich – 2 April 1984 in Schwalmtal-Waldniel) was a German sports physician and athletics trainer. Van Aaken became known as the ""Running Doctor"" and was the founder of the training method called the "Waldnieler Dauerlauf" (German: "Waldniel endurance run"). He is generally recognized as the founder of the long slow distance method of endurance training. As a sports physician, trainer and advocate of new developments he directed himself fanatically to distance running and the training of ""pure endurance"" (""reine Ausdauer"") with high mileage in