[1] In his youth Maeda was fan of Tiger Mask and Bruce Lee's movies which sparked his interest in martial arts, he later joined the Caesar Gym in Tokyo.

[2] Despite this situation Kensaku Maeda managed to won his first title on July 18, 1992, against his rival Atsushi Tateshima taking the AJKF Featherweight Championship belt by decision.

On July 25, 1997, he defended his WKA Muay Thai World title against the Australian Craig Pace by second-round KO.

[5] On May 12, 2000, at K-1 King of the Ring 2000 Maeda won a double world title match beating Massimo Rizzoli by second-round TKO.

His work showed impressive results quickly some of his students (Taishin Kohiruimaki, Ryuji Kajiwara, Junichiro Sawayashiki, Keiji Ozaki) started to win titles in various organizations.

On January 28, 2008 K-1 hired Maeda to supervise the youth development of future K-1 fighters leading to the creation of K-1 Koshien, a tournament to determine the best under 18 amateur kickboxers of the country.

[8] On September 9, 2016, for undisclosed reasons Maeda was forced to resign by the K-1 company and replaced by Mitsuru Miyata the former Krush producer.