Team Calderón Viladecans Instructors | Catalan National Team
Professional coaches with competition experience and champion training in martial arts
High Performance Team
At Ryutai Viladecans we have instructors from the prestigious Team Calderón, recognized nationally and internationally. Our team includes members of the Catalan National Team for Martial Arts, regional champions and certified coaches with decades of experience.
Each instructor specializes in specific disciplines (BJJ, MMA, K1, Kickboxing, Grappling, Boxing) and is personally dedicated to the technical and physical development of each student. Since 2016, we have trained over 200 students in Baix Llobregat, maintaining a 4.9/5 star rating.
Our method combines professional technique, comprehensive physical preparation and a competitor's mindset, adapted to all levels from beginners to professional fighters.
Francisco Calderón
Founder & Head Coach | Catalan Kickboxing National Team Selector
7-time Spanish Champion. Catalan Kickboxing Federation Selector. Over 10 years training champions: +20 Spanish Champions, world and European medalists. 2 gyms in Viladecans.
Sheila Martínez Sánchez
Kickboxing and K-1 Instructor
European WAKO Pro Champion 2025 and Spanish Champion. Kickboxing and K-1 specialist with over 10 years of competitive and teaching experience.
Stwar Serrano
BJJ & MMA Instructor | Gracie Barra Black Belt | Former Professional Fighter
Gracie Barra BJJ Black Belt in Viladecans, Baix Llobregat. Former professional MMA fighter with 7 years in the ring. Instructor in Barcelona. First class free.
Bwela Bosoka
Boxing Coach | Team Bwela Manager
Boxing coach and boxer based in Viladecans. Team Bwela manager at Ryutai and collaborator with Viladecans Boxing School. Specialist in technique and training amateur competitors in the Baix Llobregat region.