Jan Zamec started with horse back riding in his childhood. His first steps in the saddle he took in Moravia. Since 2009 he has regularly participated in dressage competitions. In 2013, he established a collaboration with Dressage Stable Umlauf, where under the guidance of Ladislav Umlauf and Eva Jančaříková he was preparing young talented dressage horses for young horses competitions. Until now he is presenting horses from Mr. Umlauf´s breeding. Since September 2014, he has been fully dedicated to the training of horses and riders in the ArtDressage Stable Holubice, but the cooperation with Mr. Ladislav Umlauf and Eva Jančaříková continues. Now Jan is training horses for all ages and performance categories. He is presenting not only his horses, but also his clients' horses on dressage competitions in the Czech Republic and abroad. Since 2016, he has established close cooperation with the Dutch stud farm Van Olst Horses. 

Markéta Zamcová is also engaged in horseback riding from childhood. The competitive career began in 2003, when under the training of Jiří Pažoudka and Eva Pažoudková successfully passed the horse riding license and started to actively compete in pony sport. By 2009, she had been primarily engaged in jumping sports. In 2011 she began to ride at the Black Horse Dressage, where she met her husband, Jan Zamec, and under the coach Katarina Hlavová, she began intensively to practice dressage and preparing young dressage horses. She worked in Dressage Stable Umlauf from 2013 to August 2014, where she gained valuable experience with the training of young horses and experience in horse saddle at the highest level of training. Since August 2014, the ArtDressage Stable Holubice has been fully involved.