Dubravko graduated as aerobic instructor at Zagreb's (Croatia) biggest gym and is presenter of the Croatian aerobic and fitness organisation. As of 1995 he has been teaching successfully in Germany's famous gym "Sportpark Hilden" near Duesseldorf. In the end of 2001 he became coordinator at "Sportpark Hilden".

As a presenter, Dubravko gave his debut in 1996 on the 3rd International Sportpark Aerobic Festival. After that he present on many conventions in Europe and South America. At the same time Dubravko was choreographer and trainer of the Sportpark Show Team and the Reebok University Show Group of North Rhine Westphalia (Germany). He was also member and the choreographer of the "Rhythm Attack" Show Group.

Dubravko has been organizing the "International Reebok Body Art Conventions" in Zagreb (Croatia). He is also organizer Germany's most famous convention - International Sportpark Aerobic Festival. Since 1998 he is an educator for ISAS (International Sportpark Aerobic School) and since 2001 also the director and organizer of the ISAS School.

	2003.	Dubravko took first place as presenter of the year in "Shape up" Fitness-Magazine at 18. International Sportpark Aerobic Festival in Hilden.
	2004.	first Croatian presenter at IDEA convention in San Diego.

Dubravko has been taking part at big conventions such as:

Austria: AISA Kongress - Vienna   Belgium: International Wellness Events Conventions - Liège   Bosnia & Herzegovina: International Aerobic Convention - Sarajevo   Brasil: ENAF Convention - Pocos de Caldas Fitness Brasil - Santos & Salvador   Croatia: International Reebok Body Art Convention - Zagreb   France: FCSAD International Convention - Paris DOMYOS Convention - Lille   Germany: International Sportpark Aerobic Festival/Meeting - Hilden FIBO Convention - Essen EURO-Meeting - München   Italy: International Spunky Convention - Genova Fitness Festival - Rimini IFFAS Convention - Treviso   Poland: Miedzynarodowy Festiwal Aerobiku - Warsaw Fitness Vita Konwecja - Warsaw   Russia: MIOF Convention - Moscow Planeta Fitness Convention - Samara   Slovenia: International Body Fit Convention - Maribor   Spain: New Fitness Era Convention - ORTHOS - Barcelona A.E.M.A. Circuit Conventions - Madrid & Valencia   Switzerland: International Aerobic & Fitness Kongress - Basel IFAC Convention - Morges   USA: IDEA Convention - San Diego & Las Vegas   Yugoslavia: International Reebok Convention - Belgrade