Newspaper articles of judo injuries resulting in death: 1984 – 2010 [1] Newspaper articles of judo injuries resulting in death: 1984 – 2011 [2]

Newspaper articles of judo injuries resulting in death: 1984 – 2010 [1]

Second grade junior high school judo club student dies following a strangle hold by the teacher
The Asahi Shimbun
August 25, 1984

In the workshop hall of Hada Junior High School, Masayuki Nakajima (13), a second year student, was practicing judo with the judo club teacher Shigemitsu Hanai (23) around 11:30 on Aug. 24. Masayuki lost consciousness when the teacher used strangling technique. He was taken to the hospital by ambulance but soon died.

The Toyohashi Police Station will interview Mr. Hanai due to the suspicion that he failed to exercise due care required, while the autopsy of the boy is being conducted from the morning of Aug. 25. The All Japan Judo Federation has stated that this is the first case of death in Japan by the use of the judo strangling technique.

The investigation has shown that 22 first and second year students participated in the practice that day. When the members paired to practice newaza (ground grappling) in the final part of the practice, Masayuki paired with Mr. Hanai because he had no partner. Mr. Hanai sat astride Masayuki, who was lying down, grasped both lapels of his judo outfit with both hands to apply strangling, then in less than 10 seconds he fainted. He had a few convulsions immediately after and stopped moving. Mr. Hanai massaged his arms and legs but he did not recover consciousness.

Masayuki has an ordinary constitution, about 164cm tall and weighs 56kg. There was nothing unusual in the school medical checkup conducted in spring. He joined the judo club right after school started and had 4th Kyu.

Mr. Hanai was a member of the judo club for 3 years in high school, holding 2nd Dan. After graduating from Aichi University of Education he started teaching at this school from April the previous year. He managed the judo club with another colleague, but was by himself that day because the colleague was on a business trip.


Second year junior high school student dies during judo practice; cause of death was acute heart failure
The Asahi Shimbun
August 26, 1984

Masayuki Nakajima, a second year student of Hada Junior High School, died in the morning of Aug. 24 during judo practice when the teacher of the judo club applied shime-waza (strangling technique). The Toyohashi Police Station announced that the autopsy, which was conducted on Aug. 25, at Aichi Medical University, had indicated that the cause of death was acute heart failure, not suffocation.



  1. Newspaper articles of judo injuries resulting in death: 1984 – 2011 [2]

District Court accepts parents’ request; junior high school student died from judo injury
The Asahi Shimbun, Shizuoka
August 5, 1994

The parents of a male junior high school student (12), a member of the after-school judo club, in Yaizu, Shizuoka, who died during practice, had filed a civil lawsuit against the 3rd year student and his parents, and the city of Yaizu. They claimed that the senior student, the opponent, lacked consideration and that the supervision of the parents and the school was insufficient; they sought a total of 49 million yen of compensation. The district court ruled the decision on Aug. 4. The Chief Justice Kohei Yoshihara totally accepted the claim of the plaintiff, stating “Practice method used by the senior student had problems and neither his parents nor the school fully exercised supervisory responsibility.”

The lawsuit was filed by an owner of a hair salon (53) and his wife (53) in Yaizu. His younger son died when he was a 1st year student of the junior high school.

The decision indicated that the child attended the practice of the judo club in Aug. 1986. He fell and hit his head strongly when a senior student used osoto-gari (large outer reap), resulting in death. No instructor was present at the practice.


67million yen settlement agreed; lawsuit on junior high school student who died during practice; Tokyo District court/ Shizuoka
The Asahi Shimbun, Shizuoka
March 28, 1995

At the hearing of the appeal against the civil trial filed by the parents of a male student (12) who died during junior high school judo club practice, a settlement was reached on March 27. The parents sought a total compensation of \49 million, claiming insufficient consideration of the practice opponent who was a senior student, and lack of supervision by the opponent’s parents and the school. The parties have agreed that \67 million, including interest, will be paid by the defendant.
The defendant had appealed to the Tokyo High Court against the decision by the Shizuoka District Court, which was in full favor of the plaintiff.

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