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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11 answers
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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 ...
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27 votes
7 answers
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 ...
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25 votes
8 answers
16k 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 ...
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19 votes
16 answers
11k 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 ...
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17 votes
7 answers
5k 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 ...
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17 votes
7 answers
6k views

Do Aikido wrist locks work against stronger opponents?

As a part of my training in TKD, I learned how to do some wrist locks for basic self-defense applications. These are quite similar to some techniques from Aikido. However, in practice (during sparring ...
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  • 403
17 votes
3 answers
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 ...
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17 votes
3 answers
3k views

What Level Of Expertise Did Theodore Roosevelt Have In Judo?

During his tenure as president, Theodore Roosevelt held a third-degree brown belt in Judo (according to Wikipedia). I know that in standard ranking systems, a third-degree brown belt is just below ...
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17 votes
3 answers
5k views

Is there any documentation of newaza in Fusen-Ryu?

Renzo Gracie's book Mastering Jujitsu makes the interesting and not otherwise repeated claim that BJJ is descended directly from Fusen-Ryu rather than Judo. Allegedly, while Judo was cleaning up at ...
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14 votes
6 answers
6k 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 ...
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14 votes
5 answers
32k views

What submissions are not allowed in competitive Judo?

After watching a number of matches during the Olympics it seemed like a lot of opportunities for submissions weren't even pursued. In the matches I observed I only saw two legitimate submission ...
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14 votes
5 answers
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. ...
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14 votes
4 answers
516 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 ...
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13 votes
8 answers
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How can I improve my teaching of ukemi or break falling?

How can I improve teaching forward and flip (kote gaeshi and sumi otoshi for those that know what it looks like) breakfalls? I have been teaching those for a while and students do pick them up and ...
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13 votes
3 answers
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 ...
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12 votes
6 answers
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, ...
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12 votes
6 answers
2k views

What is the good path to become a Judo teacher?

I am currently 15, live in a small town in Switzerland and have a green belt. There is a small, local Judo community that mostly trains young children from white to orange belt. There are currently ...
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12 votes
6 answers
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 ...
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  • 403
12 votes
4 answers
26k views

How is the scoring determined in Judo for the Olympics?

I've been watching the Olympic Judo matches and I'm confused. I know that ippon is an instant win. And 2 waza-ari are the equivlent of an ippon. But then there is another number associated with the ...
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12 votes
3 answers
711 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 ...
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  • 275
12 votes
4 answers
1k views

Where can I find or how can I make a tailored white dogi for women?

Does anyone know of a good supplier of white dogi for either aikido or judo that are tailored to women? If not, does anyone know of homemade modifications that can be made to a "male" dogi to make ...
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12 votes
1 answer
955 views

De-ashi-harai or De-ashi-barai?

I have seen 出足払 ("advancing foot sweep") written two ways by the Kodokan, with the 払 part transcribed as 'harai' (は)1 or 'barai' (ば).2 3 How is the name of this technique pronounced in Japanese? With ...
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11 votes
7 answers
21k 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.
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  • 631
11 votes
8 answers
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 ...
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11 votes
8 answers
24k views

Is the highest judo belt really red?

I found a graphic detailing belt colours according to ranks. In there, the last two judo ranks are red and white for 6-8th dan ranks and full red belts for 9 and 10th dan. Is the highest judo belt ...
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  • 211
11 votes
5 answers
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&...
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  • 631
11 votes
6 answers
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 ...
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  • 229
11 votes
3 answers
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 ...
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11 votes
2 answers
2k views

Understanding the nature of a high ranking judoka?

This is sort of a theoretical question that isn't as superficial as it will initially sound-- Take any one of the three living 10th dan judoka, the youngest of whom is 86. I would imagine that the ...
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11 votes
3 answers
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? ...
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11 votes
3 answers
850 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 ...
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10 votes
3 answers
16k views

How to get fit (again) for Judo

So, I've started doing Judo again after 8 years abstinence (I'm 28 now) and I really suck fitness wise and technical wise. Unfortunatly we only have training once a week which is probably not enough ...
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10 votes
3 answers
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 ...
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  • 148
10 votes
1 answer
1k views

Judo - Why does the ref sometimes pause the match when it goes to the ground?

In watching some Olympic Judo matches I am confused as the why the ref sometimes stops the match when it goes to the ground, sends judoka back to their sides and then restarts the match. If someone ...
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  • 282
10 votes
2 answers
1k views

Can a Judo athlete compete in more than one weight class in the Olympics?

I am specifically speaking about the London 2012 games. I am not asking if any athletes are doing this, just whether it is technically permitted. Wikipedia says nothing, but this was allowed in ...
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10 votes
2 answers
491 views

Is shaking hands after a judo competition bad etiquette in Japan?

Judo contains a number of rituals inherited from Japanese culture, one example being the codification of bowing to your opponent before and after competing.1 However bowing doesn't carry the same ...
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10 votes
3 answers
2k views

Shoulder brace for Judo?

I've got a combination of neck and shoulder injuries on my left side. Neck from being spiked, shoulder from an americana and a west point ride suplex. I've definitely got weakness in my rotator cuff. ...
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9 votes
5 answers
5k views

Should I give up my back on purpose so that I can do this throw?

I'm pretty sure the name of this throw is called Ippon Seoi Nage. It looks like this: I would say that it is fairly simple and it was one of the first ones I learned. It happens when someone takes ...
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  • 1,503
9 votes
1 answer
1k views

In Tournament or Competition Judo can you use improvised techniques or throws that are not "officially" named?

Well, the title pretty much asks it all. Basically, if you work on a technique of your own, and it does not involve arm or leg locks, or submission tactics,... if it is a basic "throw" or &...
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9 votes
3 answers
1k views

How can I improve my technique in Judo?

When I'm in randori, the technique that I mostly do that works nicely is Harai Goshi, but I'm starting to get countered since I do it often. When I try to do something like Seoi Nage, I can never seem ...
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9 votes
3 answers
3k views

How do you choose which judo techniques to practice? (tokuiwaza)

Background: Age 34, I'm a 6ft 2 inch, 95kg mesomorph and have been at 3rd kyu for about a year now. For the most part, I am an ambidextrous player, with little preference as to which side I attack ...
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  • 624
9 votes
1 answer
323 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 ...
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9 votes
3 answers
813 views

Judo gis for lanky players?

Lately a lot of BJJ Gi manufacturers have been making gis that are fitted for lanky players, but of those that make slim cut BJJ gis, their Judo gis are still just the standard cut (even Fushida now, ...
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9 votes
1 answer
878 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 ...
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  • 367
9 votes
4 answers
1k views

What benefits (if any) are there when listening to music while practicing? And does it depend on the style?

Listening to music while practicing is something I see many martial artists do; especially those in boxing and MMA; I have seen it less in wrestling and judo. Is this because of the stereotypic groups ...
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  • 1,450
9 votes
2 answers
601 views

Why is the first dan called shodan, as opposed to ichidan?

Subsequent dan grades in judo are named numerically nidan (二段), sandan (三段) etc, but the first grade is called shodan (初段) "beginning grade". Is there a particular reason for this as opposed to the ...
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  • 7,272
9 votes
1 answer
2k views

Under what conditions would you prefer o-guruma to ashi-guruma?

Ashi guruma is a throw where tori off-balances uke to the front and tori spins to wheel uke over the fulcrum of tori's outstretched leg (and not a reap, like harai goshi). I find it easiest to execute ...
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8 votes
5 answers
821 views

How to deal with a judoka who is not gentle?

First of all, I'm a beginner. White belt (not even a month of practice). At wikipedia, they said Judo literally is "gentle way". My sensei told me so too... When I do randori with higher rank, they ...
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8 votes
7 answers
1k views

Mouthguards and judo

To all the judokas reading this, I was wondering how common are dental traumas in non competitive judo. How many dental injuries have you seen in your practice? Do you use mouthguards or know someone ...
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  • 263
8 votes
5 answers
675 views

What is the difference between Yama-arashi and Harai-goshi?

I have seen the throw yama-arashi done in multiple ways: 10 dan Mifune performs it without sweeping uke's leg. In the Kodokan training video tori performs yama arashi with an obvious leg sweep (...
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