From: the_dojang-owner@hpwsrt.cup.hp.com To: the_dojang-digest@hpwsrt.cup.hp.com Subject: The_Dojang-Digest V8 #674 Reply-To: the_dojang@hpwsrt.cup.hp.com Errors-To: the_dojang-owner@hpwsrt.cup.hp.com Precedence: The_Dojang-Digest Mon, 10 Dec 2001 Vol 08 : Num 674 In this issue: the_dojang: Re: large and still master the_dojang: Gun Control the_dojang: BMI and where it falls short the_dojang: Knees hurts the_dojang: Dolyo Chaki the_dojang: Better round kicks the_dojang: . ========================================================================= The_Dojang, serving the Internet since June 1994. ~900 members strong! Copyright 1994-2001: Ray Terry and Martial Arts Resource The premier internet discussion forum devoted to the Korean Martial Arts. Replying to this message will NOT unsubscribe you. To unsubscribe, send "unsubscribe the_dojang-digest" (no quotes) in the body (top line, left justified) of a "plain text" e-mail addressed to majordomo@hpwsrt.cup.hp.com. To send e-mail to this list use the_dojang@hpwsrt.cup.hp.com See the Korean Martial Arts (KMA) FAQ and the online search engine for back issues of The_Dojang at http://MartialArtsResource.com Pil Seung! ---------------------------------------------------------------------- From: Dominic Mitchell Date: 10 Dec 2001 13:25:59 -0500 Subject: the_dojang: Re: large and still master > One of the best measures of healthy weight is Body Mass Index. > "A BMI of 19 to 24.9 is considered a healthy weight. A BMI 25 to 29.9 > is considered overweight; 30 to 39.9 obese and 40 very obese. A BMI of > less than 19.0 is considered unsafe and may indicate malnourishment." > > To calculate the BMI try this site > > http://www.whwmag.com/whw_online_bmicalc.asp > I just check that site. According to these criteria a healthy for me ( 37 years old, 5'8" ) I would be at a healthy weight in between 121-160 pounds. It is a margin of 40 pounds. It is very imprecise without further knowledge of the specific of the individuals --- muscle mass, bones size, etc. Thus, this is to be used with care. For example, someone in my category but not very muscular could say that at 160 pounds he is not overweight if he is not interested ( motivated ) to loose some weight. On the other hand, someone with eating disorder like "anorexia" could go on to target a much lower weight than optimal for him if he his of the muscular type. Anyhow I have just lost 30 pounds. There are significant gains in the dojang. This is very tangible for my training partners :) Cheers. Dominic. ------------------------------ From: "ISA CONSULTATION GROUP" Date: Mon, 10 Dec 2001 14:14:03 -0500 Subject: the_dojang: Gun Control Received this URL today and thought it fit for DD readers. http://www.newsmax.com/showinsidecover.shtml?a=2001/12/9/23417 Respectfully, George Petrotta http://www.geocities.com/sungjado/ http://leftbehind2001.tripod.com/index.html _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp ------------------------------ From: J Hazen Date: Mon, 10 Dec 2001 12:28:13 -0800 (PST) Subject: the_dojang: BMI and where it falls short Charles Richards writes: CR: One of the best measures of healthy weight is Body Mass Index. CR: "A BMI of 19 to 24.9 is considered a healthy weight. A BMI 25 to CR: 29.9 is considered overweight; 30 to 39.9 obese and 40 very obese. A CR: BMI of less than 19.0 is considered unsafe and may indicate CR: malnourishment." : To calculate the BMI try this site : http://www.whwmag.com/whw_online_bmicalc.asp While using a simple BMI can work for some people, it won't work well for you if you're either thick-framed or have plenty of muscle packed on you. At 14% bodyfat (measured by bioelectrical impedance analysis), I weigh 220lbs, so at 5'10", the website tells me "Your BMI score is 32. You are at a very unhealthy weight." 15% bodyfat (not BMI), according to several online sources, is the healthy acceptable weight for caucasian males. Growing up, until I learned that you could actually measure body fat (through BIA), I was fairly depressed about how much I weighed and that I always registered "fat" or "extremely obese" on the charts in P.E. Now I know I was only slightly overweight. So, while finding your BMI may work for people that are usually within the "average range", it's not going to work for everybody. I guess I'm a little "heavier built" than most folks with a 52" chest, while my legs and arms are shorter-than-average-for-my-height (most of my height/weight is in my torso). Don't forget to breathe! Jeff 7th gup WTF TKD Seattle, WA ------------------------------ From: Tyranmarla@aol.com Date: Mon, 10 Dec 2001 20:05:48 EST Subject: the_dojang: Knees hurts I need some assistance from everyone. For the last month when I work out at the Dojang, or do my martial arts, my knees have started to hurt after I finish. I use Ben Gay and other ointments to my knees, but they do not really help. Is there anything I could do to help my knees? Is this serious? I want to take care of myself. Please advise ------------------------------ From: Ray Terry Date: Mon, 10 Dec 2001 19:09:48 PST Subject: the_dojang: Dolyo Chaki An interesting article from www.taekwon.net Why is Dolyo Chaki so important? - -Seok Boo Kil Technically speaking, Taekwondo players attack and defend according to the opponent's movements, location, or footwork, mostly using hands and feet. Taekwondo kicking techniques are various: front kick, roundhouse kick, back kick, downward kick, etc. Each technique facilitates a different body weight movement or movement range. So it's hard to weigh which technique is good or bad, but players get most points by roundhouse kicking (Ahn, Yong Kyu 1983). As he said, Dolyo Chaki(roundhouse kick) is one of the most useful and essential techniques in Taekwondo. If someone asks me why, I'll explain as follows. According to 'Dynamical Analysis of Taekwondo basic kicks' written by Sung, Nak Joon, professor of Hosuh University in Korea, Dolyco Chaki takes only 0.19sec on average from the moment you lift the foot until the moment you strike the target; this technique is the fastest of all kicks. Further, the impact the target gets when you execute Dolyo Chaki amounts to 1098N, which is the strongest of all. With respect to time, intensity, and accuracy, therefore, Dolyo Chaki is the fastest and delivers the biggest impact. In his paper 'Biodynamic Analysis of Dynamic Dnergy Variations of Taekwondo Kicking Motions,' Yang, Dong Young has written, Dolyo Chaki takes 0.43sec from the moment you lift the foot until the moment you strike the target. The time each part reach the maximal angular velocity varies; thigh is fastest, and lower leg and foot. Dynamic energy of thigh, lower leg, and foot of kicking leg is the biggest in Dolyo Chaki among Ahp Chaki, Dolyo Chaki, and Dwi Chaki. There is a little different in measurements between the two people, but they agree that Dolyo Chaki is the fastest and most powerful. That is, Dolyo Chaki is one of the most useful and effective kicking skills in Taekwondo. Moreover, Dolyo Chaki is one of the most efficient kicks, so it is easy to offend and defend by Dolyo Chaki, and this skill is quick to execute and change the posture. To sum, it is one of the most important kicks in Taekwondo. Then, how can we become proficient in Dolyo Chaki? I think the articles I'd written before - 'Better Round Kicks' and 'How to make a kick faster'- can be helpful. To add some more, you should stretch your joint enough the moment you strike the target, since the most important factor to determine the kicking time for Dolyo Chaki is the velocity of the knee joint. To stretch the knee joint, you might take a little longer time but you can add more velocity. For Dolyo Chaki, it's best to put your feet shoulder-wide apart. Hip joint bents until the very moment you strike the target, which adds more velocity. Speed increases from hip joint, knee joint, and ankle joint, so to maximize the speed, you should increase the speed of hip joint and knee joint. Further, when it bents to a maximal angle, the maximal velocity of the ankle joint gets higher as the angle gets smaller. So it is desirable to bent the knee as much as possible. I've talked about why Dolyo Chaki is important in Taekwondo and some effective-faster-ways of Dolyo Chaki. I hope this can be helpful for you to improve your fighting skill (Refer: Kim, Bok Young. Effects of Taekwondo Dolyo Chaki according to the leg stances) ------------------------------ From: Ray Terry Date: Mon, 10 Dec 2001 19:10:48 PST Subject: the_dojang: Better round kicks And another... Better Round Kicks Tips for round kicks -Seok Boo Kil Most matial art kicks facilitate spinning power of the whole foot with stability of the supporting ground and a broad stance. However, Taekwondo round kick causes the hip to spin on the axis of the coxa of the supporting side, with the stance shoulder-wide, while the hand and upper body on the other side turn to the opposite direction, so that the whole body twists, causing counteraction. At the same time, bend coxa and knee joint as much as you can, and let them drive spinning power gradually while they get to the target, and at the last moment the spinning power reaches the peak, and you kick the target with the maximal power (Science of Taekwondo, Ryu Byung Kwan) Round kick is one of those which you take most often. From the ready-stance, lift the knee and twist your waist as quickly as possible when you start to get on speed as if you try to take a step to run. Then take advantage of spinning power and accelerating speed of lifting the knee, and toss up the knee to kick. After you kick, bend the knee again to recover balance. (Taekwondo Theories, Kang Sung Chul) If you should think you would try to kick from low, it would not be a round kick. That is a kick by foot only, not by the whole body. That is, that's not a real round kick. Some say that you should turn the kicking knee toward the foot on the opposite side; this means inter-spinning. If you spin the foot inward, the kicking foot can get as close to the supporting foot as possible. An important point here is the turning force. The formula of entrifugal force is mv7/r, where r refers to radius, m to mass, and v to velocity. High speed and great mass and short radius make greatest force. So if the radius is long, the force goes down even though speed and mass are great enough. That is, if the spinning radius is too long, high speed and great mass may be useless. That's why kicks from the other martial arts are weaker than Taekwondo counterparts; their spinning radius is too long. So, put your kicking foot to the supporting leg as closely as possible, together with inward spinning of the foot. Forget about kicking up from low. Spin and lift the knee, turn your body and then kick the target horizontally. This is the right kind of kicking. If this is done correctly, the outer part of the foot top touches the target. Most beginners would have the inside part of the foot top touches the target. One more, remember you kick the target with your body. In Taekwondo, speed goes high from coxa to knee joint, and the moment your foot hits the target, the speed gets highest. That is, have shoulder and hip cooperate so that the transfer from thigh to lower leg to foot makes up the highest speed of foot tip and greatest impact. Kicks with the whole body is the right kind of kicks. Further, it is important to push the floor when you kick. When you lift the knee as mentioned above, you should take advantage of counter force of the floor. If you push the floor, much more force is transmited to the target. I mean you should use some external force. I hope you can maximize effect of your training based on the right ways of kicking. ------------------------------ From: Ray Terry Date: Mon, 10 Dec 2001 19:11:19 PST Subject: the_dojang: . ------------------------------ End of The_Dojang-Digest V8 #674 ******************************** It's a great day for Taekwondo! Support the USTU by joining today. US Taekwondo Union, 1 Olympic Plaza, Ste 104C, Colorado Spgs, CO 80909 719-578-4632 FAX 719-578-4642 ustutkd1@aol.com http://www.ustu.org To unsubscribe from the_dojang-digest send the command: unsubscribe the_dojang-digest -or- unsubscribe the_dojang-digest your.old@address in the BODY (top line, left justified) of a "plain text" e-mail addressed to majordomo@hpwsrt.cup.hp.com. Old digest issues are available via ftp://ftp.martialartsresource.com. 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