Questions tagged [judo]

Japanese modern martial art, combat sport, and Olympic sport of throwing, pinning, choking, and locking; developed by *Kano Jigoro* in 1882.

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19
votes
15answers
10k views

What are good exercises for building grip strength for judo and BJJ?

I'm looking for exercises to help maintain a grip on an opponent's gi while pulling them around. There are two elements to this: strength and endurance. Meaning, I want my grip to be hard to break but ...
13
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3answers
4k views

What can I do to improve my squat for judo throws during randori?

I am 6 foot 2 inches and weigh about 90Kg - I find it very difficult during randori to get a full turn in for (for example) O Goshi. My instructors are always telling me that I need to get lower and ...
6
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2answers
476 views

Are hammerlocks (te-gatame) legal in judo competition?

The Kodokan Kansetsu-Waza video demonstrates a number of variations of te-gatame where uke's arm is pulled up their back, applying a hyper-rotational lock to the shoulder (sometimes called a ...
3
votes
2answers
951 views

Why is ude-garami legal if it is effectively a shoulder lock?

Since 1925, judo competitions have nominally banned all joint-locks applied "anywhere other than to the elbow joint". Since its inception in 1951, the IJF has also adopted this rule. In spite of this,...
69
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11answers
178k views

How dangerous is it to choke someone unconscious or to be choked unconscious?

A little background: I was practicing with my instructor one morning. It was just him and me and we were doing free training of submission grappling. At one point I managed to get him in a choke ...
11
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3answers
2k views

Do pins in judo have to be standard pins?

If in judo we execute a pin that different from a "standard" Osaekomi-waza, but still pins the opponent on their back or puts enough pressure for them to tap out, does it still fully count for ippon? ...
17
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3answers
3k views

How do blood chokes actually work?

This is prompted by this answer and the description of blood chokes included. It states that: Cerebral blood flow (CBF) chokes involve restricting the flow of blood to the brain, thereby denying it ...
17
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7answers
4k views

Does judo work against someone not wearing a judogi?

How would you evaluate a usefulness of judo on the street where the opponent is missing the judogi or any other kind of the outfit which could play that role. Basically I mean that t-shirt would be ...
7
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3answers
3k views

What is the difference between judo and wrestling?

Wrestling involves pinning, choking, and making someone fall to the ground. The same features are involved in judo. What is the difference between judo and wrestling?
6
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3answers
353 views

Is there a way to reliably attack only a bent elbow joint with ude garami (Kimura, Americana)?

Joint locks in judo must nominally be on the elbow joint only. Ude garami, translated as the entangled arm lock and with variants are known as the Kimura or Americana in BJJ, often affects the ...
6
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1answer
586 views

Are omoplatas legal in judo?

Are omoplatas legal in judo? Though they cause pain to the shoulder joint, they "lock" the elbow joint (in a bent position) to achieve this (as in ude-garami and te-gatame).
14
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4answers
485 views

To prevent injuries, how do you discourage people from using excessive force?

This is basically a question about how to encourage randori (free play) versus shiai (competition) during throwing practice. Randori is supposed to be friendly; the objective is further development of ...
9
votes
1answer
808 views

What are the differences between traditional Jujutsu and Brazilian Jiu Jitsu?

I am familiar with the history of both Jujitsu and Brazilian Jiu Jitsu and how they were formed and I know a little about the differences between them. I've read multiple threads, but there were ...
11
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3answers
834 views

Learning not to turn your back on ground?

As a judoka, I've the bad habit of turning my back when ever I get in trouble in groundwork. In competition judo, you only get points for throwing your opponent, and landing stomach down doesn't ...
7
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0answers
245 views

Origin of kawazu-gake?

There have been multiple proposed etymologies for the judo throw kawazu-gake (河津掛): Named after a famed sumo wrestler, Kawazu Saburo Sukeyasu Named after "frog" (蛙 old japanese kawazu, ...
6
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2answers
494 views

What's the name of this sweep and where did it originate?

Here is a description of the sweep: Attacker is in a sitting position, holding the opponent in guard, possibly, but not necessarily controlling the opponent's hands and preventing the opponent from ...
5
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2answers
188 views

The name of a throw where the tori starts from a headlock

I saw this throw demonstrated earlier today in a children's judo class. The tori starts in a headlock (or perhaps puts their own head into one), pushes their inside arm through to grab at the back of ...
5
votes
2answers
593 views

When/why was the list of Kodokan Judo throws and ground techniques recently expanded?

Toshiro Daigo's book Kodokan Judo Throwing Techniques published by Kodanasha International, Tokyo 2005 lists 67 throwing techniques. As Daigo is the chief instructor at the Kodokan, I took this as the ...
5
votes
1answer
275 views

Is there a canonical resource for the classification of Judo mat techniques?

For throws, I use Toshiro Daigo's book Kodokan Judo Throwing Techniques published by Kodanasha International, Tokyo 2005. It specifically addresses some of the arcane points of Kodokan classification ...
5
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10answers
5k views

Is 16 too late of an age to start hapkido or judo?

I'm 15 and would like to start martial arts when I turn 16. I want a year to get myself in to really good shape before I start. One more question, what were you guys like when you started and what ...
4
votes
1answer
296 views

Etymology of tomoe-nage?

Tomoe-nage is often translated as "stomach throw" or "circle throw", but these are not direct translations. What does tomoe mean, and why is the throw called this?
2
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1answer
138 views

How are pins classified in Judo?

A number of changes have been made to Kodokan osaekomi-waza classification over the years; how are different pins distinguished in Judo?
2
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0answers
336 views

Origin of kata-guruma?

In an interview with Torahei Ochiai in the 1920's, Jigoro Kano states that he adopted kata-guruma from wrestling's fireman's carry.1 However, the Kodokan Judo Throwing Techniques book posits a ...
2
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2answers
202 views

How are arm-triangle chokes classified in Judo?

There are various styles of choke which involve an arm-triangle (or inversion of this technique): Choke example Kata-gatame choke North-South choke (with arm in) D'Arce choke Anaconda choke Von ...
27
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8answers
15k views

How do I practice judo throws on my own without a partner?

How do you practice your judo throws at home or any time that you're by yourself? The leg movement is easy to do as long as you have the space, but proper arm movement and strength is hard to ...
27
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7answers
6k views

To what extent do (should) judo and BJJ overlap?

I'm fairly well acquainted with the history, concepts, goals, and methodology of judo and BJJ. I realize that BJJ evolved from judo, and that both involve takedowns/throws and chokes and joint ...
12
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6answers
19k views

Have you seen a fight between *top* Judo and Aikido practitioners?

First of all, no disrespect to anyone. I am not trying to get into a discussion of which art is better/faster/more effective/etc... I get that the quality of the fighter is more important than the ...
11
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7answers
20k views

What are the long term health consequences of practising judo?

I'm starting to think getting smashed into the ground on a regular basis might not be too good for the body.
10
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3answers
2k views

Fall Differences between Jujitsu, Aikido, and Judo

I just started learning Japanese Jujitsu and the techniques for falling are different than Judo and more similar to Aikido. When I learned to do a front or side fall through my previous martial arts ...
7
votes
1answer
235 views

How has BJJ innovated since diverging from Judo?

Brazilian Jiu-Jitsu has its roots in early 20th century Judo, but has developed independently as a distinct martial art focused on groundwork in the century since then. It maintains a number of ...
14
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5answers
5k views

Judo mats: any certification? what characteristics should one look for?

Is there any official certification system for Judo mats? What specific characteristics should one be looking for in a Judo mat? Remember the primary purpose of the Judo mat is injury prevention. ...
12
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6answers
2k views

Teaching ukemi to children

Ukemi (break falling) is a vital skill when doing Aikido. Soon, my club is starting a children class (anyone between 8 to 17) and as instructors, we must teach the children how to break fall. Ideally, ...
11
votes
6answers
5k views

Does practising judo increase the likelihood of sustaining a brain injury?

Judo is a sport which involves throws. Most throws in shiai are not very clean. In Judo, the uke (throw receiver) may land head first. I am concerned that such head first landings may potentially ...
11
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5answers
2k views

Why is osoto guruma named osoto “guruma”?

Osoto gari translates to "large outer reap". That makes perfect sense as it is a large reap on the outer leg. Osoto guruma translates to "large outer wheel" and the "wheel&...
8
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3answers
323 views

Who was the first female judoka?

Who were the first female judo players? When did they train? Keiko Fukuda was promoted to fifth dan in 1953.
7
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3answers
1k views

Why grip with only three fingers?

I have heard a number of judoka promote gripping with only the lower three fingers (pinky, ring, middle) as opposed to all five. I've sometimes heard this referred to as the 'Japanese grip'. Is there ...
7
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2answers
321 views

Is there a pin in Judo that cannot be classified as a standard pin?

I was recently inspired by this question: Do pins in judo have to be standard pins? The answers given are obviously correct as the Judo definition of a pin is a lot more loose than what the question ...
5
votes
1answer
344 views

Why were leg-locks removed from Judo?

Early judo contained (in addition to strangles and arm-locks) various types of leg-lock. At some point in the early 20th century all leg-locks were banned in both randori and competition, and removed ...
4
votes
2answers
325 views

Is an arm-triangle (choke from kata-gatame) a legal submission in Judo?

When holding an opponent in kata-gatame: by applying pressure to one side of their neck with their trapped shoulder, and the other side with your enclosed arms, you can apply an arm triangle choke, ...
3
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2answers
317 views

Is the Biceps Slicer a legal technique in judo?

There are a number of compression locks in grappling, which function with tori placing a limb (acting as a fulcrum) in the crook of one of uke's joints, and applying pressure to flex the joint over ...
13
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6answers
5k views

Why do taekwondoists bounce so much? (And how do we help them stop?)

At training last night (Japanese JiuJitsu), we had two people with TKD backgrounds training with us. I couldn't help noticing how bouncy they both were. They both came from different TKD school, yet ...
12
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3answers
673 views

Breakfalls in competition

I've done judo on and off for a number of years and haven't really competed. Now that I've started back I'd like to (once I feel I'm good enough) start entering more events. Due to years of club ...
11
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8answers
2k views

Why do we do ukemi aka break falls?

In Aikido (and Judo, Jujitsu, etc...) we do a lot of break falling or ukemi. It is one of the first thing to is taught to beginners. It is the first thing that they are graded on and one of the ...
11
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3answers
3k views

Arm bar crushes the groin

I know, that's weird. But I'm sure I'm not the only one who has had this problem. When I do my arm bar and I'm not wearing a jockstrap, I tend to crush my groin... You'll understand that in such a ...
8
votes
2answers
332 views

Etymology and meaning of ukemi

I believe that ukemi can be translated as receiving body (受け身). It is what uke (受け, whoever receives the technique) does when nage (投げ thrower) or tori (取り, grabber) applies a technique. Am I correct ...
7
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1answer
246 views

What did Judo change/innovate when it branched from Jujutsu?

What did Judo change/innovate from Jujutsu? I understand that Kano, the inventor of Judo, borrowed from Jujutsu, and his style was originally called Kano Jujutsu. And I understand that he removed ...
7
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2answers
575 views

What is kubi-nage?

I have occasionally seen a throw called kubi-nage ("neck throw") referenced in Judo. This isn't a Kodokan-recognised name, but the throws I have seen described as it appear to be very similar to koshi-...
7
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3answers
748 views

Sumi Gaeshi or Obi Tori Gaeshi?

I'm a BJJ praticioner trying to improve my takedowns. I was wondering: is Obi Tori Gaeshi just a variation of Sumi Gaeshi, or a different takedown? The two are quite similar, with little differences. ...
6
votes
1answer
503 views

What is the difference between kosoto-gari and kosoto-gake?

Kosoto-gari and kosoto-gake are superficially similar techniques. I have seen many high level judoka call what I would have called -gari -gake and vice versa - what distinguishes these techniques?
5
votes
1answer
261 views

Why was blue chosen to distinguish competitors' judo-gis?

In the 90's the IJF introduced a requirement for one competitor to wear a blue gi, and the other a traditional white gi, in order to better distinguish them during high level competitions.1 Was there ...