Bridging Science and Practice: How Biomechanics Enhances Martial Arts Understanding

The following is taken from the preface of my The Science Behind All Fighting Techniques:

On the rare occasion that an attempt has been made to use science to understand martial arts techniques in the martial arts literature, it has generally failed to be related to practice in any meaningful way.

The following was posted on Facebook and is an example of the use of science to understand martial arts techniques failing to be related to practice in any meaningful way:

The following is taken from the introduction to The Science Behind All Fighting Techniques:

McGinnis (2005) suggests that the use of biomechanics can lead to improved performances by athletes and the accelerated learning of new skills by students. In addition, he suggests that a knowledge of biomechanics enables us to better evaluate new techniques in sports that we are familiar with as well as in those sports that we are unfamiliar with. Carr (2004) refers to the same benefits and explains that they may be realised through a basic understanding of biomechanics. These are tantalising prospects that a basic understanding of biomechanics offers in relation to the teaching and learning of fighting techniques.

My article on the biomechanical concept of force and its application to understand, teach, and learn martial arts techniques which was published in the sixth edition of Martial Arts Magazine Australia is an example of the benefits that a basic knowledge of biomechanics offers to the understanding, teaching, and learning of martial arts techniques. 

Expanding Horizons: The Boundless Possibilities of Understanding Threat Responses

When I began exploring our natural and learned responses to threats, I had no idea just how far-reaching this journey would be. What started as an investigation into fight-or-flight and stress training for survival has grown into something much larger—a foundation that connects to multiple fields of study and areas of practical application.

As I near the completion of my book, Fear and Fight: Understanding Our Natural and Learned Responses to a Threat, I’m starting to see the extraordinary possibilities that extend from this work. It’s not just about understanding fear or teaching self-defence; it’s about addressing core questions that affect how we live, learn, train, heal, and adapt in the face of adversity.

The Key Premise: Natural and Learned Responses to Threats

At its core, my book explores the ways in which humans respond to threats, both instinctively and through learned behaviours. It delves into the evolutionary roots of survival mechanisms and how these responses can be shaped, trained, and even transformed.

The insights I’ve developed are rooted in diverse disciplines, including psychology, physiology, military and law enforcement training, neuroscience, and self-defence. Whether it’s understanding the appraisal process during a threat or using stress training to regulate emotions, these ideas are designed to bridge the gap between theory and real-world application.

The Ripple Effect: Applications Beyond the Book

As I’ve worked through the chapters, I’ve realised that this understanding of threat responses is just the beginning. The possibilities for applying these insights are endless:

1. Anxiety Disorders and Mental Health

The connections between threat appraisal, emotional regulation, and stress training offer a new lens for understanding and treating anxiety disorders. This includes conditions like generalised anxiety disorder (GAD), panic attacks, and PTSD.

2. Women’s Self-Defence

By addressing the myths surrounding women’s ability to fight and defend themselves, this work provides a framework for self-defence training that goes beyond the physical. It emphasises the mental and emotional aspects of fighting, countering harmful stereotypes and empowering individuals.

3. Tactical Decision-Making

Insights from military and law enforcement stress training highlight the importance of preparing for high-stakes situations. This could revolutionise not only martial arts but also other fields requiring split-second decisions under pressure.

4. Martial Arts Pedagogy

Many traditional martial arts systems focus primarily on physical techniques. By integrating mental and emotional training, we could create a more holistic approach to teaching and learning combat skills.

5. Neuroscience and the Survival Process

Exploring the neurological basis of fear, courage, and resilience opens doors to understanding the brain’s role in threat responses. This could inform both training techniques and therapeutic interventions.

6. Fear and Resilience in Children

How do children learn to face fear and build resilience? This question connects to education, parenting, and youth development, offering valuable insights into nurturing emotional strength from a young age.

7. PTSD Treatment and Evolutionary Insights

The evolutionary perspective on PTSD suggests that our responses to trauma are not simply maladaptive but rooted in survival mechanisms. This understanding could lead to innovative treatment approaches that align with our biological and psychological realities.

8. Societal Responses to Perceived Threats

On a larger scale, understanding how individuals and groups respond to threats—both real and perceived—has implications for public policy, social psychology, and community resilience.

Beyond the Present: Future Projects and Collaborations

These possibilities inspire me to think beyond my current book. Could I write a follow-up focusing solely on anxiety disorders? Or create a manual for martial arts instructors to integrate stress training into their teaching? What about exploring fear and resilience in children or addressing societal fear responses in an increasingly complex world?

The work I’ve done so far has shown me that the understanding of threat responses isn’t just a niche topic; it’s a universal one. It touches on how we face challenges, how we grow, and how we connect with others.

An Invitation to Join the Conversation

As I reflect on these possibilities, I’m curious to hear your thoughts. Do you see applications of this work in your own field or life? Are there areas I haven’t considered?

This is just the beginning of a much larger conversation. Let’s explore it together.

Martial Arts Magazine Australia Article

It's been a while since I've posted on the Kojutsukan blog. I've been working on completing and finalising my second book, Fear and Fight: Understanding Our Natural and Learned Responses to a Threat, and I've been posting on The School of Jan de Jong blog.

In addition, I forwarded a contribution based on work in my first book, The Science Behind all Fighting Techniques, to Martial Arts Magazine Australia. My article was based on the use of an understanding of biomechanical force to better understand, teach, and learn martial arts techniques. That article was published in the sixth edition of MAMA. There are many other interesting articles from various contributors in that magazine.

I will be forwarding contributions for future articles based on work in my two books to MAMA for future publication. That work provides unique insights into the understanding, teaching, and learning of martial arts and self-defence techniques and tactics.

Why do warriors feel fear only after the threat has passed?

Recently, there have been a number of posts on Facebook from martial arts authorities that have focused on explaining emotion in relation to threats or asking questions about emotions in relation to threats in order to invite comments. The book that I am currently working on, Fear and Fight: Understanding Our Natural and Learned Responses to a Threat, is intended to deal with these issues in an authoritative way so I have decided to share some titbits from that book. This post concerns the issue of warriors only experiencing fear after a threat has passed.

Some of the following, including references, are taken from Fear and Fight and therefore the entire reference is not provided in this post.

Fear was selected for in nature because it conferred a survival advantage on an individual when their survival is threatened. Why then do warriors sometimes/often only experience fear after the threat has passed?

I regularly catch up with a friend who is a retired high-ranking police officer during which we often discuss material from my book. I once asked if he had experienced fear in a life-threatening situation in the line of duty. He didn't answer that question directly but instead asked a question of his own in relation to specific instances where his life was threatened in the line of duty but he didn't experience fear (overwhelming fear) until after the threat had passed. 'Why,' he asked, 'did I only experience fear which was selected for in nature because it conferred a survival advantage on an individual, after the threat had passed?' (or words to that effect).

Is this a common experience for warriors?

In a book that is promoted as representing a definitive collection of the most current theory, research, and practice in the area of combat and operational stress management (Combat Stress Injury: Theory, Research and Management, edited by C.E. Figley and W.P. Nash), William Nash, a former U.S. Navy psychologist who served in Iraq, provides the following description of warfighters’ combat action experience:

Before a planned combat action, most warfighters experience a period of uneasiness and agitation because of the unknowns they face and because, before the action begins, there is little they can do to actively master their stress. With the commencement of combat, however, the pre-action dread dissipates quickly, especially for veterans of combat. Most warriors then quickly get into a groove – a period of exceptionally low perceived stress, during which their thinking is clear, perceptions are sharp, and emotions are calm. The ‘in the groove’ period may last the duration of a combat action, if it isn’t too long or too overwhelmingly stressful. Once the action ends, however, perceived stress shoots back up as warfighters emerge from their emotional and physical numbness and review in their minds and perceive in their bodies all the dangers and horrors they may have experienced. The veteran warfighter quickly masters this rebound stress, however, and perceived stress returns to baseline. (2007a, 47)

Nash explains that many definitions for the word 'stress' has been offered but none has encompassed all the usages of the term even in the scientific community. I refer to this as 'the ambiguous concept of stress,' and as Hans Selye, the 'father' of the stress concept, famously said, 'Everybody knows what stress is, but nobody really knows.' In the case of the warfighters' combat action experience described above, stress is anxiety-fear.

The warfighters’ combat action experience can best be understood by dividing the experience into three temporal phases: before, during, and after a combat action experience. In emotion terms, the pre-event phase can be described in terms of anxiety (future anticipated threat) and the during-event phase in terms of fear (real or perceived imminent threat). In chapter four in Fear and Fight, we see that emotion is evolutionarily designed to promote homeostasis: ‘For example, running from a source of threat reduces the threat and tends to reestablish the condition that existed before the threat occurred’ (Plutchik 2001a, 120). The reestablishment of the condition that existed before the threat occurred describes the post phase of a threat event. This is our principal natural response to a threat, however, anxiety-fear-return to homeostasis phases do not describe the warfighters’ combat action experience as described by Nash above (although he did implicitly refer to the pre-event emotion of anxiety with his reference to uneasiness, agitation, and dread pre-action).

In terms of emotion phases, the principal natural response to a threat is anxiety-fear-no fear; the warfighters’ emotional response to a threat described above is anxiety-no fear (during phase)-fear (post phase)-no fear (return to homeostasis). What’s going on here? 

In the chapter on PTSD in Fear and Fight, I refer to Friedman et al and Friedman:

[Friedman et al] make specific reference to military personnel: ‘Trained military personnel may not experience fear, helplessness, or horror during or immediately following a trauma because of their training. They may only experience emotions after being removed from the war zone, which could be many months later’ (2011a, 756). Friedman expands the identified personnel who may not experience an emotional response at the time of a traumatic event to include, ‘military, police, and firefighter personnel who often report that they felt nothing, but that their professional training “kicked in”’ (2013, 551).

Warfighters experiencing no fear during the event/combat action phase is explained by Friedman et al and Friedman in terms of their training (see above), however, why do warfighters experience fear after the threat has past given that fear was selected for in nature because it conferred a survival advantage on an individual when their survival is threatened? 

The answer to that question lies within the learning aspect of PTSD discussed in Fear and Fight. In summary, a major feature of PTSD is the re-experiencing phenomena. When proposing his evolutionary theory of PTSD, Cantor suggests that the ‘re-experiencing phenomena of PTSD represent higher order memory and learning experiences. … Simply put, if ancestral individuals have had seriously threatening experiences, their long-term survival might be promoted if their lessons were not forgotten (re-experiencing symptoms)’ (2005, 123-124). Before Cantor there was Silove who suggests the same thing when exploring whether PTSD is an ‘overlearned survival response’:

automatic repetition of trauma memories once the survivor has withdrawn from the situation of danger ensures that memory traces signifying life threat are maintained in a highly active state and that they are rapidly retrieved when cues signifying the salient danger are encountered. Although the repetition of traumatic memories by the rehearsal mechanism triggers subjective distress in the survivor during the acute phase after trauma exposure, from an evolutionary perspective, the priority of survival learning overshadows the organism’s need for emotional stability. (1998, 186-187)

According to this view, the re-experiencing symptoms of PTSD are nature’s way of instilling and/or reinforcing the lesson that the traumatic event was dangerous and should be avoided in the future. 

In answer to my retired police officer friend's question, while his training produced a no-fear response during the life-threat event, nature still wanted him to learn the lesson that what he did was dangerous and it should that it should be avoided in the future (Don’t do it again!). Nature teaches this lesson in this case through fear being experienced after the threat has passed. It is still a survival response as it’s evolutionarily designed to avoid such life-threats in the future.

PS: My friend was happy to learn that this was a warfighter's combat action experience when I shared Nash's extract with him. While the previous sentence was designed to add levity, it does also show that knowledge about our natural and learned responses to a threat does alleviate stress, distress, confusion, etc, and which is why 'stress exposure training' that is used to better prepare military personnel for operational deployment, and most treatments for PTSD commence with a psychoeducation phase.

Combat-Related PTSD

I've been working on the chapter on PTSD in my Fear and Fight: A New and Better Understanding of Our Natural and Learned Responses to a Threat. Fascinating subject. In this post I will share some information about combat-related PTSD.

The first thing that needs to be understood about PTSD is that PTSD is a generic term and includes different types of PTSD. Different types of PTSD means different symptoms and different treatment.

Evolution and Posttraumatic Stress: Disorders of Vigilance and Defence by Chris Cantor is the first book to examine PTSD from an evolutionary perspective. Cantor argues that a confounding issue in the study of trauma is the blurring of boundaries between fear and loss-related phenomena. He suggests that the study of responses to extreme fear involves PTSD and that of loss involves depression: ‘PTSD might be more useful if it was restricted to the emotion fear; loss is adequately catered for by depression’

Cantor is comparing apples with oranges here. Fear is an emotion, loss is not. Appraisal theory has a stress appraisal being classified as either harm/loss, threat, or challenge. It is better to speak of threat-related and loss-related PTSD.

Cantor states that fear is the key emotion in (threat-related) PTSD. However, empirical evidence suggests that there is a unique relationship among PTSD, anger, and aggression, particularly in veterans. Why? Because warfighters are trained to cope with threats with anger and aggression. While a benign stimulus in PTSD is erroneously appraised as threat, the trained response of a warfighter/veteran to a threat is anger and aggression. That trained response is reinforced in combat when it is successfully employed to survive life-threats. (See Chemtob et al (1997) 'Anger regulation deficits in combat-related posttraumatic stress disorder' Journal of Traumatic Stress.)

Compare that to rape-related PTSD. In those cases, fear is the key emotion and the response is our natural or instinctive response to a threat rather than a learned/trained one.

There are many issues that arise from this conception of PTSD. For instance, Possis et al (2014) investigated driving difficulties among military veterans and the potential pathways that underlie risky driving behaviour. The risky driving behaviour pertains to driving behaviour in the relatively benign civilian environment upon return from deployment. Possis et al start off by explaining that military personnel deployed to Iraq and Afghanistan often develop mental health difficulties (e.g., PTSD), which may manifest as problematic driving behaviour: ‘Veterans may be more likely to engage in risky driving and to subsequently be involved in motor vehicle accidents and fatalities’ (2014, 633). Possis et al propose three mechanisms underlying driving difficulties in the population group under investigation: influence of fear, influence of anger and aggression, and influence of thrill seeking and sensation seeking.

When considering the influence of fear on driving difficulties among military veterans, Possis et al explain that,

Certain military experiences may make veterans more prone to fear-related driving difficulties. Military training itself may have an influence; the importance of ‘tactical awareness’ or being aware and able to react to danger immediately at all times is emphasised. Constantly being on guard and aware of potential threats might make an individual more apprehensive and anxious. In discussing his anxiety in dense traffic, the patient of one author (E.P.) commented that ‘my [military] training taught me it’s not safe to be boxed in. … individuals with significant driving anxiety are likely to make catastrophic predictions about driving situations (e.g., ‘trash on the side of the road could be an IED’) and are likely to attend to threat-related cues to the exclusion of other information. Additionally, these individuals are likely to engage in avoidance behaviour, such as steering clear of traffic or underpasses.’ (2014, 634-635)

The question here is, are the driving difficulties fear-related in combat-related PTSD or is it simply their training. The appraisal is in error, but does it produce a fear response? And what of a veterans training? They are trained to deal with fear and anxiety, e.g., stress exposure training (chapter 18 in Fear and Fight). Interestingly, a lot of therapy for PTSD is the same training provided to warfighters to better prepare them for operational deployment. Warfighters should already have a lot of the tools necessary to treat threat-related PTSD given they are the same tools they are taught to overcome fear and anxiety in order to fight.

Kodokan Judo Belts and Snooker Balls

I was updating my book tentatively titled, The Science Behind All Fighting Techniques, and was looking into what a black belt originally meant when introduced by Jigoro Kano, founder of Kodokan Judo.

Kano introduced the black belt to distinguish between seasoned practitioners and others. Kawaishi introduced coloured belts for kyu grade because he was teaching in France and considered that Westerners needed some form or recognition for advancement.

So where did the colours come from for the kyu grades.

The International Judo Federation website refers to one theory that they were based on the colour of ... snooker balls. :) I just love this. Different colours with different values.

I've read a description for Kyokushin karate which refers to the colours of their kyu belts reflecting those of our 'aura.' The invisible energy fields that surrounds all living things apparently, although not so invisible if they formed the basis for a coloured belt grading system.

The martial arts (as opposed to the martial way) was developed by practical people for practical reasons. I just hate how it has be subverted and devalued by those who use it take people on a supposed 'magical mystery tour.'

If you want the whole analogy thing, which is the most important ball on the snooker table :) ... the white ball pots the coloured balls to win the game, including the black.

Core of All Learning and Martial Arts/Self-Defence Instruction

My last post concerned the PTSD story based on my work for a chapter in my book, Fear and Fight: Understanding Our Natural and Learned Responses to a Threat. That chapter has been put on hold as I returned to the chapter on The Strategic Use of Emotion to Counter Fear in War. The book is a process and product of learning and insight. As I learn more and gain more insights, it impacts on previously written chapters that produced that learning and insights, and thus a re-think and re-write is required.

This post, however, is a return to the core of all learning. The core of all learning is the second chapter in my The Science Behind All Fighting Techniques because it is such an important concept. This has become so obvious in the past few weeks based on discussions with various martial artists.

In their book on research-based strategies for increasing student achievement, Marzano, Pickering, and Pollock (2001) explain that the identification of similarities and differences may be considered the core of all learning. Marzano, Pickering, and Pollock explain that research has identified four highly effective forms of identifying similarities and differences: comparing, classifying, creating metaphors, and creating analogies. 

We use the identification of similarities and differences to make sense of our world every single day. Understanding this concept enables us to use it consciously and deliberately rather than unconsciously and accidentally.

The martial arts is the very definition of the use of the core of all learning. The Karate Kid's 'wax on, wax off' is the very definition of the use of metaphors to teach karate techniques. Housner and Griffey (1994) use this movie as an example of the use of metaphor in motor skill instruction.

'Horse-riding' stance is another use of metaphor to teach martial arts techniques. In each case, as is the case with the identification of similarities and differences generally, the known is used to teach/understand the unknown. 

Of course the use of metaphor to teach martial arts techniques has its limitations for a variety of reasons. For instance, wing chun's 'goat gripping' stance does not help me understand this stance given that I have never seen anyone try and grip a goat. Ditto with Mas Oyama's birin, 'tail of dragon' stance. Even after watching Game of Thrones I have no idea what a tail of dragon stance would look like, not initially anyway.

How do you explain aikido? 'It's like jujutsu, but ...' What is pencak silat? 'It's an Indonesian form of karate.' Using the known to understand the unknown by identifying similarities and differences.

One of Jan de Jong's favourite theory questions in his jujutsu shodan grade was, 'What is the difference between o soto gari, o soto otoshi, and o soto guruma?' A more complete and insightful question would have been, what are the similarities and differences between those three techniques. 

The very reason for Minoru Mochizuki's kentai ichi no kata (kata of sword and body) is to demonstrate the similarities between sword and unarmed defences (see here). A sword defence is demonstrated followed with a similar but different (unarmed) defence. A more complete kata would be to focus on the similarities and differences because unarmed techniques can be/are compromised in order to fit with the theme of the kata, that being to demonstrate the similarities between sword and unarmed techniques.

In the current chapter I'm working on, one of the strategic uses of emotion to counter fear in war is the 'inculcation of hope.' Petersen and Liaras (2006), whose paper the chapter is based upon, use fear to understand hope. When those who argue that hope is not an emotion, they base their argument on a comparison between hope and the concept of emotions generally.

I was training some students in certain shime waza (strangulation techniques) from a prescribed attack and one technique did not 'feel' right. These shime waza are the same as those taught in judo so I studied the judo version. What I found was the judo techniques are applied with tori (the applyer) already behind uke (the applyee). The JDJ method was from a high punch where tori started off in front of uke and had to find a way to get behind them in order to apply the technique. This leads to all sorts of questions, however, knowledge and insight was gained through comparing those same techniques used in judo and JDJ's jujutsu.

I was reflecting on JDJ's jujutsu grading system and did so by comparing it to that of his aikido and other aikido, jujutsu, and karate grading systems. Far more insights were gained by doing so then if I'd simply attempted to study that grading system in isolation. In fact, the very concept of 'best practice' is based on comparison.

In another part of my life, I am a financial and corporate governance professional. What is the purpose of financial statements? It's to inform. How does it do so? Through the identification of similarities and differences. FSs are comprised of income, expenses, assets, liabilities, and owner's equity. Those are all classes of financial transactions. To better understand financial performance and financial position, you compare. Compare month to year-to-date, current year to previous year, other companies in the same industry, etc.

While most martial artists are comfortable with this concept, they often baulk at classification. This becomes very evident when I raise the issue that most, if not all, martial arts acknowledge the existence of throwing and takedown techniques but do not know how they are different. The common response is that the difference is academic and/or classification is an administrative exercise and serves no useful purpose (even though the very idea of throwing techniques and takedown techniques is an exercise in classification). Not so.

'Classification is often thought of as an administrative exercise and treated with disdain within the martial arts community. Lakoff (1987) warns against such a dismissive attitude. He suggests that there is nothing more basic to our thought, perception, action, and speech than classification and that without the ability to classify we could not function at all, either in the physical world or in our social and intellectual lives' (extract from my book).

Kano, the founder of Kodokan judo, was an educator (teacher). It is no wonder that he developed a classification system for judo. The idea of classification of techniques is seen in some aikido systems where their founders were also students of Kano.

One example, albeit a good example, of the benefits of classification is its use in 'previewing'. By previewing techniques, whether by classification or comparison, the student already knows what to look for in a defence before they even see it. They can call on their prior knowledge of similar techniques to help in learning the new technique efficiently and effectively.

Learning to think, teach, learn, and explain in terms of similarities and differences improves with practice. You'll notice the improvements in teaching, learning, and correcting/improving performances.

References:

Housner, L.D. and D.C. Griffey. 1994. Wax on, wax off: Pedagogical content knowledge in motor skill instruction. Journal of Physical Education, Recreation & Dance 65: 63-68.

Marzano, R.J., D. Pickering and J.E. Pollock. 2001. Classroom Instruction That Works: Research-Based Strategies for Increasing Student Achievement. Alexandria, Virginia: ASCD.

Petersen, R. and E. Liaras. 2006. Countering fear in war: The strategic use of emotion. Journal of Military Ethics 5(4): 317-333.