Articles | YMAA

Origin of the Blood Oath
September 18, 2023
And there it was. It’s not only my injuries that wake me in the night. In the vulnerability of the dark, I wonder if the point of Yamashita’s art is not about skill or technique but simply about pursuing an unshakeable willingness to surrender the self in the pursuit of something higher.
Yamashita’s Dojo
August 14, 2023
The following is an excerpt from John Donohue's upcoming martial arts thriller, Keppan: The Blood Oath, coming to YMAA Publication Center in September 2023. This is the sixth installment of Donohue's gripping martial arts thriller series about martial artist Connor Burke. Fusing the way of the pen and the way of the sword, Donohue has trained in the martial disciplines of aikido, iaido, judo, karatedo, kendo, and taiji. He has dan (black belt) ranks in both karatedo and kendo. A nationally known expert on the culture and practice of the martial arts, Donohue infuses his thrillers with genuine cultural and martial aspects that every reader will enjoy.
Sumo: David vs. Goliath
February 10, 2017
In Malcolm Gladwell's very popular book David and Goliath: Underdogs, Misfits, and the Art of Battling Giants, the author deeply explores the lessons behind the three-thousand-year-old Biblical story of how the small young David defeated the giant warrior Goliath.
MMA Champion, Lyoto "The Dragon" Machida, Incorporates Sumo into his Fighting Style
January 5, 2017
A prime example of how a MMA fighter has incorporated sumo into his game is former Ultimate Fighting Championship (UFC) Light Heavyweight Champion Lyoto "The Dragon" Machida. He has a strong sumo background, but his primary style is traditional Shotokan karate.
Sumo: A Case Study in Size vs. Technique
November 7, 2016
Sumo is the fusion of honored ritual with unbridled power. Even in a combat sport like sumo, where great body mass and girth are often winning factors, superior technique can overcome size and strength.
The Hidden Roots of Karate and Jujitsu - October 5, 2016
This article will discuss several martial arts to illustrate how different looking martial arts are apparently closely related and how the idea of hidden historical roots applies to many martial arts. First the origins of karate and Okinawan sumo will be explored. Then the root of jujitsu will be uncovered.
Brain Damage: Do Football Helmets Help? - September 5, 2016
Recently, the National Football League is facing a 765-million-dollar lawsuit filed on behalf of more than 4,500 former players regarding the concussions and potential chronic traumatic encephalopathy (CTE) sustained during their careers. Similar lawsuits are underway against the National Collegiate Athletic Association as well as the National Hockey League, and football helmet maker Riddell is facing multiple lawsuits over claims about the effectiveness of their helmets at protecting athletes from concussions.
Foam or Knuckles—Navigating the Illusion of Safety - January 18, 2016
If you really want to understand how gloves contribute to the safety of our athletes, especially when it comes to their brains, take a closer look at the physics behind taking a punch with a bare fist or a glove.
Guns, Knives, and the Hollywood Death Sentence - September 21, 2015
In order to become a successful screenwriter in Hollywood, you need to watch a lot of movies, so you can learn from the screenwriters who came before you, and so you can get a feel for what else is out there and popular today.  Unfortunately, this important part of a screenwriter's education is also how Hollywood ends up propagating and recycling incredibly stupid ideas over and over again to the point where the audience just accepts it without question.
Enzan The Far Mountain - A Connor Burke Martial Arts Thriller - August 11, 2014
The following is an excerpt from John Donohue's latest martial arts thriller, Enzan The Far Mountain. Chie Miyazaki is a wild, spoiled, pampered child of a cadet line of the Imperial House of Japan. When she disappears in the United States accompanied by a slick Korean boyfriend who may be taking orders from Pyongyang, it sets alarms off in Japan's security apparatus as well in the U.S. intelligence.
Principles Common to Both Qin Na and Ground Fighting - September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
Kage-The Shadow - August 8, 2011
This is the fourth book in the Connor Burke martial arts thriller series. Burke lives in Brooklyn, New York where his warrior-teacher Yamashita has his dojo. But the story begins in the unforgiving landscape of the American Southwest. A notorious best-selling author Elliot Westmann is killed.
Outside Looking In - August 25, 2008
Martial art training is complex and significant and can be important to people for various reasons. I believe that it’s important, however, for everyone to be very clear as to what the reasons are for training.