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Body Mass Index, also known as BMI has always been considered as the standard for indicating how much body fat in the body. However, according to recent research, it might not be as accurate as originally thought.
A research team from Michigan State University and Saginaw Valley State University measured the BMI of more than 400 college students, where some of them were athletes and some not. It was found that in most cases the student's BMI did not accurately reflect his or her percentage of body fat.
The research is published in the March issue of Medicine and Science in Sports and Exercise, the official journal of the American College of Sports Medicine.
BMI is determined using the equation of the weight divided by the square of the height. An ACSM guideline for BMI is less than 25 for everyone over the age of 20. For Health Promotion Board guidelines (2005), recommended healthy range is 17.9. Generally, a person with BMI higher than 25 is considered as overweight and if BMI exceeds 30, he or she is considered to be obese. A person with higher BMI is often associated with higher risk of heart disease, diabetes and other weight related problem.
The main issue for using BMI is that regardless of gender and age, the same criteria is used to determine whether one is normal, overweight or obese. However, BMI should be used carefully when determining whether one is obese or not, especially when classifying different categories of people.
BMI does not really accurately tell how much fat a person really has; this is due to the nature that it cannot really differentiate between body fat and muscle mass. This is especially true when BMI were used to measure athletes, a large percentage of them were often considered to be obese, where in actual fact they are not. Many athletes tend to have high BMI due to muscle mass being built up and not due to body fat.
Taking for instance, two people with the same height and same weight, where one is an elite athlete who do a lot of strength training with large muscle mass and the other who hardly exercise. Both will have the same BMI, based on the equation alone and both will be considered as falling into the same category, but we know that the elite athlete is definitely not obese.
If BMI cannot accurately differentiate between muscle and fat, then how do we know whether one has too much body fat or muscle mass? A more accurate measurement is to look at body composition instead. The body composition is made up of total body water percentage, body fat, bone mass and muscle fat.
Such measurement can be done using skin fold measurement, bioelectrical impedance, photometry and water weighing. Most of the above mentioned required specialize equipment or skilled personnel to do the measurement, which often is not easily available for normal users for measurement.
However, there are now body compositions monitor available in the market for home users, which uses bio-electrical impedance which can quite accurately measure the bone mass, muscle mass, body water percentage and body fat percentage.
How the body composition monitor works is like this, it passes safe, low-level electrical signals through the body via the footpad of the monitor platform, where it is easy for the signal to flow through fluids in the muscles and other body tissues but meets resistance as it passes through body fat, since it contains little fluid. This resistance is called impedance and the impedance readings are then entered into medically researched mathematical formulas to calculate the body composition. From these reading, we can then better analyze whether one is having too much or too little body fat.
According to ACSM guidelines, for female 15 to 25 percent of body fat is considered optimal, 25 to 30 percent is considered fair and 30 percent and above is considered obese. For male, 10 to 20 percent body fat is considered optimal, 20 to 25 percent is considered fair and 25 percent and above is considered obese.
In conclusion, BMI can be used as a quick reference or guideline to see which range one belongs. However, one has to take into consideration their physical activities level as well as their body type. A more accurate measurement is still to look at the body compositions. With constant self-monitoring of body composition, one can better understand their own physical conditions and also to adjust their diet, training intensity and frequency accordingly. It also serves as a motivational tool for monitoring progress in their training.
Coach Yip has written various articles relating to Taichi and Sports Science. He has also previously conducted Taichi & Sports Science seminars. Coach Yip took up Taekwondo since young and attained his black belt before he started learning Taichi. He had participated and achieved many medals in various National Wushu Competitions.
Coach Yip is currently NROC registered with the Singapore Sports Council under Wushu/Taichi with a NCAP III certificate. Coach Yip approaches Taichi in a very scientific research based and systematically training system.
Besides giving personal and small group coaching, he also specializes in Wushu/Taichi coaching for Kids in schools and has previously conducted Mass Wushu Workout for Kids, ranging from primary to junior college level. To date, more than a thousand students had benefited from his Sports Scientific Wushu & Taichi coaching. For more info, visit http://www.newagetaichi.com
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WTF?! $10 WTF?! |
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WTF $10 WTF |
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USA Taekwondo $98.77 High Quality Content by WIKIPEDIA articles USA Taekwondo is the national governing body (NGB) of Taekwondo for the United States Olympic Committee and as such is the official Member National Association (MNA) of the World Taekwondo Federation (WTF) in the USA. It began in the 1970s as the AAU National Taekwondo Association, and later broke away from AAU and created the United States Taekwondo Union (USTU). In 2004, its name changed to USA Taekwondo (USAT) after the USOC removed the leadership of the former USTU for malfeasance. The organization has complete authority over all decisions regarding U.S. national junior and senior team selections for World Taekwondo Federation events, including the Summer Olympic Games Taekwondo competition event. The tournaments that are held by the USAT are big and nationwide and many famous martial artists attend the events. The U.S. Open is one of the largest international Black belt (martial arts)only events in the world. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 156 Publication Date: 2010/08/21 Language: English Dimensions: 6.00 x 9.02 x 0.36 inches |
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Complete Taekwondo Poomsae: The Official Taegeuk, Palgawe and Black Belt Forms of Taekwondo $36.4 Complete Taekwondo Poomsae is the most complete reference book available on the Taegeuk, Palgwae and Black Belt Poomsae of WTF style Taekwondo. Grandmasters Kyu Hung Lee and Sang H. Kim have combined their extensive taekwondo knowledge to teach you not only the 25 official taekwondo poomsae, but the meaning of the forms, the principles of Poomsae performance and the philosophy that underlies the techniques. Each Poomsae is thoroughly illustrated with clear and technically precise photos. The instructional text is supplemented with information about the meaning, movement line and symbol of each form as well as the correct execution of each new movement introduced in the form. |
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Taekwondo Kids Volume 2: From Green Belt to Blue Belt $13.8 - "Taekwondo Kids" has been specially written with children and youths in mind and is targeted towards children and youths between the ages of 8 to 14 - Numerous appropriate illustrations suitable for children and youths, all the exercises can be carried out or practiced further without any difficulty - Includes all the respective techniques and exercise forms in Taekwondo for advancement to the next belt grade in the WTF System, up to the grading test for the Yellow-and-Green Belt - Written in the form of a course textbook |
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Taekwondo Kids: From White Belt to Yellow/Green Belt $13.84 - "Taekwondo Kids" has been specially written with children and youths in mind and is targeted towards children and youths between the ages of 8 to 14 - Numerous appropriate illustrations suitable for children and youths, all the exercises can be carried out or practiced further without any difficulty - Includes all the respective techniques and exercise forms in Taekwondo for advancement to the next belt grade in the WTF System, up to the grading test for the Yellow-and-Green Belt - Written in the form of a course textbook |
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Taekwondo $14.95 Taekwondo is a journey. Its ultimate destination is the achievement of physical and spiritual enrichment through the disciplined practice. While this book addresses the physical and intellectual elements of Taekwondo, it continuously emphasizes ethical principles, integrity, perseverance and the indomitable spirit, all of which enhances character, and lends credence to the term martial artist. Discover how a path of Taekwondo can enrich all areas of your life. |
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Wtf?! $22.48 Corrective surgery gone wrong, punk rockers abducted by aliens, and dwarfs obsessed with pomegranates are just a few of the things you will find in this anthology. From the quirky to the serious to the surreal, whatever happens in these stories is bound to leave the reader wondering WTF? Featuring 37 original stories by A.A. Balaskovits, James S. Dorr, A.A. Garrison, Erik T. Johnson, KJ Kabza, D.C. McMillen, Douglas J. Ogurek, D. Harlan Wilson and a whole bunch of other writers who don't use initials in their pen names. |
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WTF? $9.95 You order a large coffee with milk and two sugars at the drive thru, and wind up with a large black--decaf. You go to save the presentation that's taken you all week to complete--only to discover it's corrupt. Your bank slaps you with a $25 charge for overdrafting 25 cents; And all you can think is, WTF? Luckily for you, this book fills in the blanks and gives you humorous ideas for what to do when life makes them say, "what the f*#!?" Step by step, the authors take readers through inventively therapeutic, sometimes illegal, always hilarious solutions to life's many problematic situations. Whether it happens at the office or at home, out on the town or in the bedroom, life's most f*#!'ed-up situations are covered in this entertaining guide. Rather than turn lemons into lemonade, this book spits lemon juice into life's eye and gives it a good kick to the junk. |
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Wtf $15.99 Metropolis Records:708 |
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wtf $8.99 ONE PLAN, TWO PARTIES, SIX PLAYERS: Jimmy: the driver Cam: the connect Byron: the know-it-all Waits: the supplier Reina: the conscience MC: the crasher ONE FRIDAY NIGHT these six will test their limits to the extreme. Some are driven by lust, others by greed. One just wants to have fun, and another desires to be free. If everything goes as planned, they all get what they want. But within twenty-four hours, bones will break, bodies will touch, hearts will race, guns will be drawn, and everything will go oh so very wrong.... |
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Karate And Taekwondo Shoes $39.95 Karate And Taekwondo Shoes |
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Taekwondo Basics $15.44 Taekwondo Basics features the classic stances, blocks, kicking and strikes any beginning Taekwondo students needs to know. |
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WTF? Mug $9.99 WTF are we going to write about for a WTF? mug description? We just have no effin' clue. Hopefully, you'll get the idea... 10 ounce black mug with 'WTF?' imprint on front. |
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Advanced Taekwondo $24.95 Taekwondo is defined as a hard-style system of the martial arts with penetrating kicks, punches, and forceful linear attacks. In Advanced Taekwondo , Scott Shaw presents an in-depth look at the complete art of Taekwondo-from the underlying philosophies that drive the techniques and strategies to advice on mastering basic and advanced techniques fundamental to the art. |
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Rhee TaekwonDo $70.1 Rhee TaekwonDo, also known as Rhee Tae KwonDo, Rhee Tae Kwon Do, or Rhee Taekwondo, a] is a martial art school in Australia and New Zealand b] teaching the Korean martial art of taekwondo. Its full name is Rhee International TaekwonDo with (Australia) or (New Zealand) appended. Chong Chul Rhee, one of the original masters of taekwondo, founded the school in the mid1960s. Two of Rhees brothers, Chong Hyup Rhee and Chong Yoon Rhee, later came to assist him in the 1970s. C. C. Rhee claims the title Father of Australian Taekwondo and Rhee TaekwonDo is widely publicised as being Australias first and biggest taekwondo school Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 84 Publication Date: 2010/07/25 Language: English Dimensions: 6.00 x 9.02 x 0.20 inches |
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Generation WTF $1.49 Generation WTF Button Express yourself with a button. This black button features red text. Sarcasm, attitude. |
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WTF? Work $9.95 As if your HR Department didn't have enough to worry about, WTF? is holding its own office orientation. From dealing with workplace politics and romancing coworkers to climbing the success ladder or getting canned, WTF? Work shows you how to handle the daily lows of holding down a j-o-b. Whether you're sitting in the cubes or in the corner office, working the counter or bussing the tables, WTF? provides an employee handbook that's actually worth reading. It leaves the PC stuff to the professionals and instead delivers some not-safe-for-work advice for when your job has you saying, "WTF?" For even more f*#!-ing fun, visit www.WTFComedyStop.com. |
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Taekwondo Self-Defense: Taekwondo Hoshinsool $17.26 In Taekwondo Self-defense: Taekwondo Hoshinsool, Sang H. Kim adapts traditional Taekwondo skills for the modern day Taekwondo classroom. The self-defense techniques presented blend Taekwondo kicking, blocking and striking skills with locks, throws and takedowns drawn from other Korean self-defense arts. Learn how to use your Taekwondo skills to defend against a wide variety of common emptyhand attacks including holds, locks, chokes punches, kicks and pins. Plus, learn defenses against an attacker wielding a blunt weapon, knife or gun. Each defensive scenario is illustrated with high quality photos and explained in step-by-step detail that includes key points to successfully applying advanced techniques, multiple ways of defending against the most common attacks and alternative responses to help you prepare for the fl uid reality of a real-life self-defense situation. |
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