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By reading the The Encyclopedia of Taekwon-do written by General Choi Hong Hi, the founder of Taekwon-do, one would find out that the sine-wave is a main characteristic of Taekwon-do and is part of the "Theory of power" that characterizes the style. The sine-wave emphasizes relaxation on the upward motion and the contraction and explosion on the downward(...

The "sine wave" terminology is used, in my experience, to refer to a more bouncing method of footwork in forms. A linear, non-size-wave execution of kata, such as this performance from Shotokan, values direct movement, crisp end positions, and minimal up-and-down movement between stances. In contrast, this "sine-wavey" performance from ITF TKD exemplifies ...

Both terms refer to the same kick; yop chagi is the short hand for yop cha jirugi. That's what I've been taught (and what I teach)! More Detail In the 15 volume TKD encyclopedia (written by General Choi), volume 4 has a very large section on "Foot Techniques", including several piercing kicks (Cha Jirugi); one of the piercing kicks is Side-Piercing Kick -...

The above answer doesn't actually make sense in Korean (and I can't comment so...), so I'll break it down here: 옆/yop = side 차/cha = kick (verb stem/verb - depending on context) 지르/jiru = "To nudge, kick, poke, etc., a person or object forcefully with one's arms, legs, a stick, etc" (verb stem, dictionary definition) 기/gi = the korean equivalent of a ...

Not sure how much it makes sense in native Korean - but splitting the words into small blocks and "building" the technique a bit at a time seems to be the way to learn it effectively Yop - Side Cha - kick Jiru - pierce Gi - Motion so Yop Chagi is side kick (could be a non piercing side kick) Yop Cha Jirugi is a side piercing kick. This has come from ...

Perhaps the criterion is to do with whether or not the arms swing into the block together from the same side of the body? Double forearm block (doo palmok makgi) has both arms swing around the hips together, while the double arc-hand block (doo bandalson makgi) has the arms/hands start near one shoulder then swing together into the block. Twin blocks are ...

A twin block is where the arms are apart (for instance, Sang Palmok Makgi, or Sang Songkal Makgi). A double block is where the arms are 'together' (for instance, Doo Palmok Makgi, or Doo Bandalson Makgi). For Sang Palmok Makgi (twin forearm block) or Sang Songkal Makgi (twin knifehand block), one arm is at the mid-section, with the elbow roughly level with ...

As Steve Weigand mentioned in the comments it is a very difficult task to objectively measure. Having trained ITF for many years I would struggle to perform a punch powerfully without sine wave. It also takes a lot of practice to get the sine motion right. So to measure someone without sine wave and then teach them - they would have to train it. Some of the ...

There are plenty of articles on the Internet (for example, http://www.saskgtf.com/theory.html) that talk about the 'science' of sine wave, but none of those articles appear to have any references to actual studies. So, no evidence and no links, I'm afraid.

I think this one is going to be way too hard to answer exactly. I did some digging and all I could find was information on the one that I'm assuming is the most popular located in Korea. If you visit ITF Official you can see that their membership climbs to a claimed 14201 members. This doesn't seem too far fetched as they are also claiming stake in 17 ...

I started training Taekwon-Do in 1986 in South Australia under Rhee Taekwon-Do (CC Rhee the father of Australian Taekwon-do) and a pupil of Gen Choi. In those days we did not do a sine wave, power was generated through speed and the use of the large muscles groups. On my return to the UK, I was taught the sine wave in the ITF style - thus I deduce that ...

One way to view mental illness is through the mental model of Buddhism and Daoism. This mental model is the basis for meditation in taekwondo (See here and here), as well as karate, Shaolin gongfu, Muay Thai, taiji, bagua, and xingyi. In the Buddhist and Daoist view, the mind comprises two distinct components: emotional mind - produces emotions such as ...

ITF World Tournament Rules as of 2013 do not use belts as official categories in sparring. Per section T31 - Divisions: INDIVIDUAL (A) Male and Female groups. (B) Weights. .... N.B.: In individual sparring matches competitors shall participate in the category according to their weight. It is not allowed to participate in any other weight class. ...

Encouraging students NOT to commit suicide is one of the central aspects of Shorinji Kempo, The martial art I practice. This is in deliberate contrast to the older ideals (based on the idea if not the culture of the samurai) that were very much part of the Japanese society at the time of the second world war. You often hear practitioners of karate or judo ...

"Block with your left arm and strike with your right." Most taekwondo patterns begin with a left arm technique (moving to the left) because all the patterns begin with blocks, since they are self defence routines. The only exception to this are the Sajus, which aren't really proper hyungs/tuls and have no historic background. As for why blocking is ...

I checked the encyclopedia, and found no reference to any symbolism of initially moving left or right. While there is significant symbolism for the number of movements, and the name of the hyung, there is nothing described about the left or right initial movement. I also checked with some resources on Taekwondo’s influnces in Japanese kata and Chinese taolu....

In almost two decades of doing various martial arts from Karate to Capoeira to Escrima, I have had exactly one time when the subject of suicide was brought up and that was more of a general statement on how bullying was bad and how the instructor was available to talk to if we were experiencing bullying at school after a student at the Chun Kuk Do studio I ...