Understand okuri-eri-jime in judo: principle, position, tap rule and safety. A guide to understanding without a how-to for choking – train only with a coach.
The honest answer: okuri-eri-jime is one of two chokes the German Judo Federation makes compulsory for 2nd kyu – and still it is not a technique to try out, but to learn under supervision. It is applied from behind, and the judogi, the jacket, plays a role. In the federation's basic programme it is listed among the chokes for teenagers and adults; for children it belongs to the extended programme [1].
The name "sliding collar choke" describes the principle. This guide explains classification, safety and learning build-up. A how-to for choking a partner is not here. Not out of prudishness, but because with chokes the difference between clean training and an emergency is a matter of seconds.
Sport chokes work through the vessels in the neck, not the airway. With a fully established hold, unconsciousness typically occurs after 6–14 seconds [4].
The following steps describe learning build-up and classification, not execution.
Okuri-eri-jime is one of the obligatory shime-waza at 2nd kyu in the federation's programme, named there "as koshi-jime", and at 1st kyu "as rolling choke" [1]. What you learn: it is a canon element, not a secret trick. Milestone: you know when your club schedules this technique.
With the coach you practise position, balance and calm. Nothing is squeezed. The federation requires that katame-waza are learned so that tori controls the partner even during escape attempts [1] – that is control, not force. Milestone: you hold the position without your partner being in pain.
You are first the one who taps. The IJF counts tapping with hand or foot (twice or more) or "Maitta!" as giving up [2]. Milestone: you tap early – not when it is already going dark.
The coach demonstrates, you practise movement shape and release, never pressure. Release comes at the first signal, without hesitation. Milestone: your coach sees you open immediately after every signal.
Under IJF rules it is forbidden to apply shime-waza using one's own or the opponent's belt, the bottom of the jacket or only the fingers [2]. Chokes from standing without a throw are stopped with "Mate!" and shido [2]. Milestone: you can explain what the rules protect.
This guide does not replace supervised training or a coach. You practise chokes only in training, only under supervision, only with a partner who may tap – never outside it, never as a game, never jerked.
Ask your coach how he lives the tap culture in the club. Where tapping is treated with respect, you progress faster because you dare to learn even in difficult positions.
According to the federation, okuri-eri-jime is a compulsory choke for 2nd kyu [1]. When your club teaches it is your coach's decision.
Yes, shime-waza are allowed in groundwork. Choking with belt, jacket hem or only fingers is forbidden [2]. From standing without a throw it is stopped with "Mate!" and shido [2].
Under supervision and with a tap rule it can be trained. Without those rules, unconsciousness and rarely severe vessel injuries threaten [4].
The federation postpones chokes for children; they learn holds and escapes early [1]. Cadets who lose consciousness in a choke may not continue [2].
No. You do not practise chokes at home, not without a coach and not without supervision.
Understanding Kata-ha-jime: The Single Wing Choke That Loads Neck and Shoulder at Once