Examining An Aikido Knife Defense Technique



Jerry and Rob look at an Aikido technique that involves a defense against a bladed weapon. Let’s see what type of bullshido is taught and what we can learn …

46 thoughts on “Examining An Aikido Knife Defense Technique

  1. Benjamin Pujols says:

    I totally agree anybody in front of you holding a weapon wanting to do you harm in any kind of way is very terrifying even if you're able to beat them defeat them with or without getting seriously hurt or slightly hurt it's still very scary because the whole point of that person coming at you with a weapon is to disable you permanently or murder you kill you and that's a very scary situation so yes I agree put something in between or you know people may say you're a pussy for carrying a knife or stick or a hammer but you know what if somebody's going to come at you with a weapon is best you have a weapon just in case walk away run away if you can but if you have no choice you know I'm fortunately we live in a world will not always left with a choice of course that's another reason why I limit my outings as much as possible I go to the store and after 15 minutes I'm itching to get the hell out of there because I don't want to run into anything or anyone that's going to try to do me or someone else harm

  2. Danny C Illumini says:

    if you want combat effectivity in a martial art it's always either mma krav maga or muay thai.

    Aikido. What horseshit. And I mean what true and utter horsheshit all of it, all in all. Shouldnt even be called a martial art. All those ridiculous compliance moves and pitifully choreographed techniques. Not even worthy of watered down tai chi in a hostile situation.

    Also stay well away from bujinkan as well. They are the laughing stock of the whole martial arts world like you would never imagine. No kidding at all. Not even worthy of watered down tai chi and non contact aikido in a hostile situation I swear. Bloody fake martial arts and money laundering fools.

  3. Pasquale Mazzotta says:

    well, the aikidoka s not really grabbing the wrist of the partner, and he is not staying under the knife, he moves a bit aside.

    This just the first two minutes.

    The aikidoka is exactly doing what the two guys are recommending to do.
    So the technique can also be not a smart one.

    But the two guys are criticizing the video for something that is not happening at all.

    I mean, this way of criticizing is too cheap.

  4. gatti493 says:

    take it from me , anybody who truly means to do harm to you with a knife is never going to let you see it in his hand , it will come at you from a hidden position, up his sleeve or from inside his jacket and it will be very sudden !
    the BEST WAY to avoid a knife attack is to read the situation properly and if there is ANY chance they could have a knife remove yourself immediately from the situation, if he is brandishing the knife at you, he is unlikely to use it as he is trying to frighten you not attack you, obviously there are a lot of variables like where you are ? but a REAL knifer does not want to be seen holding the knife,
    there is every chance he may come up to you smiling and even ask a question before he strikes , you may never know youve been stabbed until you see the blood !

  5. Luis NgchongJrArt says:

    this technique is very dangerous I love the way you demonstrating it, but in my case if I was in that situation the attacker would make his move just when he try to slice me with the knife I would front kick him in the nuts before the knife can touch me. of course it will need some speed and timing in my part or just run a way thanks for posting like to see more of those videoes

  6. Shadow Heart says:

    listen to the word AI-KI-DO love/harmony-power-energy- way…… so anytime you use energy in a non violent way that mechanically work great and optimally you are doing aikido .. by the pure deffention of the word i mean.

  7. Shadow Heart says:

    what you just did is aikido … but that move is inside other techniques .. as i said one technique in aikido witholds many techniques because tis princpals …. rob did great aikido there as far as i know… and ou can see exactly that in many aikido tehcniques

  8. Shadow Heart says:

    the attacks are telegrafed for training… there are so much fonfusion in tehse arts …. in real life they should train with faster attacks a master is SUPPOSED TO be able to do the real attack but a practitioner has to use telegrafed attacks.

  9. Shadow Heart says:

    ALSO a lot of techniques in arts like aikido looks simple but are more complex and the practitioner really have to be able to master the small unnoticeable things … this is why in such experiment as your video you wont be able to suddenly master that just by imitating it … i am not being BSey .. this is real i have experienced how wone movement can be done that looks similar but done very differently by someone that masters it and someone that doesnt… this brings me to a lot of BSHIDO martial arts really try to abuse this fact by pretending .. yet not mastering the fine parts of the real technique… also again these are principals they are not meant to always be the answer …. this is how people are confused about these techniques .. and i am not saynig there arent fake ones there are a lot of fake ones of these.

  10. Shadow Heart says:

    this is what most people dont get about aikido…. aikido is an inner art to learn to get the benefits of martial arts that come from your inner self…. its not firstly about being able to fight.. second aikido is mostly principals they are not supposed to be the answers to all situations .. they teach you to think a certain way…. aikido is a tool its not the whole answer to every fight… to be honst most fighting styles lack something and to be a good fighter you should learn many martial arts or criticial ones .. that is what bruce lee did come to as well.

  11. daniel280456 says:

    There's a New York UFC fan who got attacked with a knife while riding the subway. He had no training, but went for a takedown and actually got the guy on the ground and imobilised him (I think other passengers helped). The man defending himself was injured, but nothing life-threatening. I think he was a construction worker back then, he's probably a large dude.

  12. John Roper says:

    Hmm… Seems to be that a block at the wrist you are trying to block at the maximum power point of the attack. Need to displace your body from the line of attack. Head butts are good, (might stun attacker a little), but prefer to attack eyes or throat these are the softest targets. Just some thoughts. The Martial arts world needs to get it's act together on this subject.

  13. leavemealoneyouprick says:

    interesting observation of mine… Aikido took a lot of throws and locks and disarms from traditional JuJutsu, we all know this, but the couple of JuJutsu teachers that have visited my Karate dojo to do seminars and genuinely known what theyre talking about have always handed out sticks, not fake knives and said "THIS IS NOT A KNIFE AND IT DOES NOT REPRESENT A KNIFE, DONT FIGHT PEOPLE WITH KNIVES… it represents an object your opponent might grab such as a stick or a bottle etc." and suddenly it all seems so much more viable. its not always the technique (no, im not defending this one, its trash), but the context and teacher that are flawed.

    i think we like to over dramatise stuff in martial arts to make it more deadly and make us feel more powerful by adding knives into the equation at every opportunity, when in reality, all we are doing is deluding ourselves.

    former police officer, current karate instructor told me the best thing to do if you have to fight someone with a knife, is to throw your wallet at them and run.

  14. haffoc says:

    I have experimented with the grab your friend tries at about 2.53. against a powerful full speed attack it has a very high chance of failure.

    about deflecting and grabbing near the hand and the belief that the attacker is going to cut your arm — this is only a possibility if the defender just stands there. if the defender immediately amounts a counter attack after obtaining his grip, you are not likely to get cut on the arm. (perhaps the best deflection I have come across is like the muay thai long guard, although you do it with the open hand to facilitate the grip; in shotokan it's called kake te.)

    on the question of the telegraphed attack, it is true that real knife attacks from above are generally not made with a big, pinwheeling movement. normally the blow comes from about the height of the ear. there is a lot of video evidence on this.

    before you start expressing opinions about the value of this knife defense or that one, you really ought to spend time studying these videos and then taking your proposed defenses to the mat for serious testing against a hard and realistic attack from a non-cooperative opponent.

  15. Randall Lim says:

    The clip referred is not of Aikido. Maybe some form of Japanese jujitsu. Besides, even as a Japanese jujitsu technique, it was gravely flawed. The defensive interception should have been way in the advanced stage of the attack where the attacking arm is still retracted back.

  16. Anathmatician says:

    Have to say, most real knife attacks are not made with the small technical cuts you will get from a trained fighter. They are likely to be made with big violent actions, with straight stabs or downward stabs. Sometimes people will try and grab or bridge with the unarmed hand. Look at what untrained fist fights looks like. People make big wide swings and telegraph their punches. It’s true the there are people out there who train on knife technique, but those are not the people who are likely to randomly attack you. So while you guys might look at the attack as trained fighters and see that it could be better executed, in realistic self defence situations it would probably be something like that. The big problem with it is that it isn’t violent enough, and the attacker doesn’t pull his arm back and try again once he fails. The stuff you were doing on trying to stun and secure a hold makes sense. I think there is also an argument for going for the knife hand with both hands and trying to secure a grip. You might get punched but that’s way better than being stabbed, and an untrained panicky opponent is may well struggle to try and free their knife hand rather than thinking to switch hands or strike effectively with the free hand.

  17. Jose Fuentes says:

    I practice both Aikido and Escrima. In Aikido class we typically dont want to stop the blade at that height. Opponent can pull up. Usually the grip will be on opposite side of the blade. I like to do a double wrist grab followed by an elbow because you are in corto range then if opponent is stunned followed by kotegaeshi or even nikkyo. I have pressure tested and it works. You will get cut in a knife fight. Chances are high. In Escrima we work on the 7 points of vitals. This is done in a pattern. Each strike flows from one to the next. Again Aikido will work under certain circumstances. It really depends on context and what is given to you.

  18. antonio pabon says:

    Your second technique it's my favorite. Go with both hands against the arm holding the knife, do the keylock or kimura. And twist the arm away from the guy until you break the shoulder joint…

  19. Ask A Dying Guy says:

    I'll be honest, I've trained in Yoshinkan Aikido and this doesn't look like an effective technique or a proper Aikido technique.
    I'd check out the Yoshinkan Aikido Hombu Dojo in Tokyo, or Mori Sensei in Brisbane Australia. The dojo have a YouTube channel, reluctantly I think, but there are great videos where the techniques Do Work.
    As said in the video today and in comments previously, I used it with a history of Judo, Muay Thai and ultimately Brazilian Jiu Jitsu after, with a holistic approach like Bruce Lee.
    Cross training and picking the best from everything from ballet and dance to boxing and Jiu Jitsu.
    Not one martial art is purely the best.

  20. mr. K says:

    I agree with the aikido thing, its better for exercise and also some of it's takedown are easier to pull out for me, not as a defensive way but offencive since it's harder to catch the hands as mentioned. I olso like the fact that the knife defence that he suggested olso kinda looked like aikido too

  21. matt bugg says:

    If you're not disarming the knife with a slap to the hand and one to the forearm. You should always double check the arm off line like slap the forearm outward and then grab with the second hand. Any attempt to make a onesy grab ends horribly under pressure because the opponent is thinking that if he blocks I will twist the knife around and try to cut the block. So if you parry it instead of blocking and go to a second parry into the opponent or to a grab your % goes way up. Also sticks are superior to knives because you have more striking points.

  22. SundownTE says:

    A couple things:
    1) crashing in against the free-swinging arm with both hands and hiding your head in the pocket of their neck/shoulder is a really good way to avoid the empty hand striking, it takes a lot of forward pressure and commitment but it works
    2) there is no medical evidence at all that suggests biomechanical cutting actually does what the Kali fiends say it does (like disabling limbs). The only way to actually sever somebody's tendons/ligs to the point of making an arm or leg nonfunctional is with an extremely sharp surgical instrument or completely hacking the arm to pieces. It is almost impossible to disable a limb moving at high speed by cutting it with a 4 inch pocket knife through clothes and muscle and skin; it just won't be deep enough. There is no recorded incident or case where somebody's arm was disabled with a couple minor slashes. It's pretty much FMA fantasy.
    3) somebody with a wrestling skillset will know what to do if you give up your back to them while fighting for that knife arm. When people do that to me I can high-crotch them from the back or do te guruma or something along those lines. Or use any old jiujitsu takedown. It's a huge risk. It might work, but it is a risk. I use a Kimura grip for that application and then do tai-otoshi or something to make them land under me.

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