رولکر

Also known as hyperflexion of the horse's neck

thumb|Artist's rendition of a horse undergoing exercise under heavy hyperflexion. Rollkur or '''hyperflexion of the horse's neck''' is defined as "flexion of the horse's neck achieved through aggressive force" and is banned in International and Olympic sanctioned equestrian sports by the governing body, the International Federation for Equestrian Sports (FEI). The FEI recognises a distinction between rollkur and the riding of the horse in a deep outline not achieved by force.