 Back in the Netherlands, Bluming trained in judo under Eddy Roosterman and the renowned G. F. M. Schutte, and gained his black belt in three years.In 1957, Bluming was appointed coach of the Dutch national team, which won the European championships in Bellevue the same year, and also was invited to train at a police dojo in Berlin, Germany and at a private judo club.Immediately after he received the 3º dan from Tokio Hirano by beating 75 judokas in 26 minutes and while having an injured toe.