Core Principles of Aikido 

Written by Ben Ong
Published on 19 Oct 2023

Yoshinkan Aikido, a graceful and powerful martial art, holds within its core simple yet profound principles. 

It's a way of moving, breathing, and thinking that not only enhances self-defense but also brings harmony into daily life. 

In this article, we'll explore the fundamental principles of Yoshinkan Aikido, uncovering the essence of this practice founded by Gozo Shioda. 


History and Origins of Yoshinkan Aikido


Yoshinkan Aikido traces its roots to the vision of Gozo Shioda, a martial artist with a dream of spreading the art of Aikido. 

Shioda Sensei's passion for Aikido led him to develop Yoshinkan, a style that focused on precise, controlled techniques. This particular form of Aikido emphasized not only self-defense but also the discipline of the mind and body.

Shioda Sensei's journey began in the post-war era when he became an uchi-deshi, or live-in student, under the legendary Aikido master, Morihei Ueshiba. Immersed in the art's philosophy and techniques, Shioda Sensei's vision evolved into Yoshinkan Aikido.

The Yoshinkan system rapidly grew and became known for its structured teaching methods, rigorous training, and adherence to fundamental techniques. 

Today, Yoshinkan Aikido continues to flourish, preserving the legacy of its founder and the essence of its principles. As we explore further, we will uncover the core principles that give Yoshinkan Aikido its unique character and effectiveness.


Core Principles of Yoshinkan Aikido


Understanding Yoshinkan Aikido requires a deep exploration of its core principles. 

These principles form the foundation of this martial art, guiding practitioners on a path of self-improvement, discipline, and mastery. 

Let's delve into these principles, each of which is a key to unlocking the secrets of Yoshinkan Aikido.


Chushin-ryoku (The Power of the Center Line)


In Aikido, we emphasize keeping your body's center straight, which means your spine is aligned. 

Many people naturally have a slight tilt in their posture. It's essential to fix this because it's linked to breath power, a special kind of strength Aikido practitioners aim to develop. 

When you achieve this, your posture improves, your focus sharpens, and your breathing gets better. To train for this, beginners start with an exercise called kamae to establish a strong center. 

This straight center is critical for Aikido techniques because it ensures your power works effectively even when your partner tries to resist you. It's like having a strong, unmovable core.


Shuchu-ryoku (Focused Power)


In Yoshinkan Aikido, we create "focused power" by uniting energy from various body parts, like the hips, legs, and abdomen, and channeling it into one spot, such as the arm or shoulder. 

This makes our force stronger, and it doesn't rely solely on muscle strength. The whole body needs to move together smoothly, like a well-coordinated dance, to make this power work effectively. 

It's important not to tense up the upper body, staying relaxed helps energy flow better. This focused power is a key part of Aikido techniques, and we practice basic techniques to develop it. 

We use our big toe as a sort of anchor, which helps transfer power through the hips, combined with the spring-like action of the knee, creating a strong force. 

Exercises that strengthen the big toes, like kneeling techniques, are beneficial for Aikido training.


Kokyu-ryoku (Breath Power)


Breath power means staying calm and moving in harmony with your opponent's rhythm, like a dance. 

It's a kind of inner strength that comes naturally as you practice. It helps you make your Aikido techniques more powerful and effective. 

Imagine it as flowing smoothly with a partner in a dance, matching their moves effortlessly. 

This breath power makes your Aikido better without you having to do anything special to get it.


Ki (Energy)


In Aikido, ki is like finding your balance and being in tune with your partner's movements. It's about feeling their strength and timing, almost like predicting their next step in a dance.

On a deeper level, it's about being in harmony with the world around you, like going with the flow of a river. Aikido is all about this harmony, like dancing smoothly with the universe.

Think of it as a way to stay balanced and move gracefully in a world where everything flows naturally.


Irimi (Entering)


Irimi, or entering, is a way to stay safe when dealing with an attack. Instead of meeting the attack head-on, you step to the side to a safer position.

Imagine it like this: When someone comes at you, you don't just stand there. You take a step forward, a bit to the side. This not only makes you stronger but also keeps you out of the direct path of their attack.

So, irimi is about moving smartly to a safe spot while also using your opponent's energy to control the situation. It's like sidestepping to stay safe and in charge.


Kaiten (Rotation)


In Aikido, we use circular movements instead of straight ones. Think of these movements as flowing circles that help us handle an opponent's power without clashing with it. It's like smoothly going around their energy rather than trying to stop it head-on.

Sometimes, we are at the center, and our opponent moves around us, like dancing in a circle. Other times, it's the opposite, with our opponent at the center, and we move around them. It's all about staying in harmony, like dancing in a graceful and circular way.

To perform a kaiten movement, a circular turn, you need to have a strong sense of balance. If your balance is shaky, you won't be able to turn smoothly. This solid balance also helps you shift your weight from one foot to the other without losing your stability. So, think of circular movements as a dance with energy, allowing you to redirect it smoothly and gracefully.


Extending Your Partner's Body


In Aikido, there's a principle where you blend with your opponent's energy. Imagine it like dancing with someone. You guide them, almost like leading a partner in a dance. You continue leading them until they become unbalanced and powerless.

Picture it like this: If someone starts to stumble, you help them keep going until they lose their balance completely. Once they're in that unbalanced state, you use a technique to control the situation. The key is to guide them without stopping their energy, so they're always a bit off-balance.

It's a bit like gently tugging on someone's hand as they're about to fall. And once they lose their balance, you don't let them recover – that's when your technique works best. So, it's about leading your opponent to a point where they can't resist your moves.


Timing


In Aikido, it's all about using the right timing. Think of it like catching a ball – if you reach for it too early or too late, you'll miss. Similarly, in Aikido, if your timing is off, your technique won't work.

The key is to be in sync with your opponent's actions. You want to apply your technique at the exact moment when your opponent is fully committed to their attack. That's the right timing. It's like catching the ball at the perfect moment when it's in the air, not too early and not too late.

This precise timing is what makes your Aikido effective. It's about using the least amount of power for the greatest impact. So, think of Aikido as a dance where you seize the moment to control the situation by having perfect timing.


Using Your Partner's Energy


In Aikido, it's all about catching the right moment. Imagine it like a dance where you use your opponent's energy.

For example, if your opponent tries to grab and push your hand, you blend with their energy and, at just the right time, pull your hand toward yourself. This unbalances your opponent before they can pull their hand back.

Alternatively, if your opponent pulls your hand, you move with their pull at the same time.

Here's the key – if you're too slow, you won't catch their energy, and if you're too fast, they'll let go. You need to use their energy at the exact moment they apply force. It's like being in sync with their movements.

Once your opponent is off balance, they'll grip your hand tightly to support themselves. That's when you can use their energy to perform a technique. The specific technique depends on how they're holding you. Even if their grip is strong, by offering them an opening, you can turn their energy against them. Think of it as using their energy in a dance, like a partner who's leading the way.


Controlling Uke's Knee


In Aikido, when you're applying a technique, it's not just about locking your opponent's wrist. You need to extend the technique to their lower body, affecting their knee. This makes the technique work effectively.

For example, in a specific technique called Nikajo, if you only focus on locking the wrist, it might not work if your opponent is strong. But if you use your energy to destabilize their knee by transmitting it through the wrist, even if they resist, you can unbalance them.

Aikido techniques are designed to unbalance your opponent without causing harm. Normally, when we apply a technique, we concentrate on the part we think will have the most impact and often try to use our strength against where our opponent is strongest. But there's always a weak point, a line of vulnerability. By redirecting your energy into that weak line, you can turn your opponent's strength back on them, making it hard for them to stay balanced.

To find this weak point, you need to improve your sensitivity to your opponent's appearance, posture, and balance. This means gaining experience with different types of energy or power that your opponent exerts on your body. It's like finding the sweet spot where you can effectively apply your energy to control the situation, without causing harm.


Atemi (Striking)


In Aikido, they say that in a real fight, strikes are very important, even more so than the techniques. When we practice in the dojo, we learn different moves and how to use our bodies effectively.

But in a real fight, we have to use the power we've built up in the dojo and use it instantly to win. This is where atemi, or strikes, become crucial. In Aikido, we don't need to be exceptionally strong to strike effectively. We use our energy in a focused way.

For instance, in a strike like shomen-tsuki, when you move forward and use your front knee to transfer your body's energy into your fist, it becomes a powerful strike. Timing is vital. If you hit your opponent at the right moment when they're off-balance, it's very powerful.

Strikes in Aikido aren't just punches. You can use different parts of your body like your shoulder, back, or any other area to make contact and deliver a strike. It's about using the moment of contact to strike effectively, which is a key aspect of Aikido, especially in real fighting situations. It's like turning the instant of contact into a powerful strike.


Ichitaita (One Against Many)


Aikido isn't just for one-on-one situations, you can also use it when facing multiple opponents. When you're dealing with several attackers, it's important to maintain a strong posture and be aware of the situation.

Each opponent is focused on you but also divided among the others, which is their weakness. You can exploit this by moving forward and inviting them to attack. As they come at you, there will be a slight delay between their attacks.

Here's the strategy: You move toward the fastest attacker, and by turning your body correctly, that person will bump into the one facing them, creating confusion. This approach is called "hold an opponent to catch an opponent." It's about using their divided attention to your advantage, creating chaos even when facing a group of people.

To make this strategy work, you need to be able to change direction without stopping your movement, using circular body movements effectively. Strikes, or atemi, can also be used in various ways as you make your attack. By moving forward, you compel all your opponents to come toward you. When you turn your body, you further confuse them, making it challenging for them to coordinate their attacks. It's like using their own confusion against them.


Training System


Aikido training follows a structured system, beginning with the basics and then returning to the basics. This system includes the following components: 


Kihon Dosa (Basic Movements)

This is where Aikido training starts. 

There are six basic movements that form the foundation of Aikido. Beginners practice these alone or without a partner to learn how to use their whole body's power effectively, how to perform entering and turning movements, and how to maintain a stable posture. 

Higher-level practitioners practice these movements with a partner, where they take on both the roles of shite (the one performing the technique) and uke (the one receiving the technique). 

This advanced practice helps them understand how to connect with their partner's energy and use their partner's weak points to unbalance them. These movements can be practiced both without weapons and with weapons like a sword.


Kihon Waza (Basic Techniques)

These are techniques performed either in a kneeling position (suwari waza) or in a standing position (tachi waza). 

Suwari waza helps you strengthen your ankles and hips and is crucial for understanding how to move from the hips. In basic techniques, uke (the one receiving the technique) performs various attacks, and shite (the one performing the technique) responds effectively. 

The goal is to learn the correct way of using your power and not to rely on your partner to resist or help.


Applied Techniques

Applied techniques are the next step, evolving from the basic techniques. 

Instead of breaking down each movement individually, applied techniques flow as one continuous motion. 

These can also be practiced with weapons, like a sword or knife.


Freestyle Techniques

In freestyle techniques, you and your partner have predetermined attacks, like a front strike or a one-handed grasp. 

You choose how to respond freely each time. You apply the body movements and energy redirection learned from basic techniques to make realistic and continuous movements. 

You can also expand your training by having your partner use different attacks.


Freestyle Techniques Against Multiple Attackers

This training involves dealing with multiple attackers, where you have to move your whole body effectively and maintain a stable posture. Your opponents can attack in various ways, like empty-handed, with a sword, or a knife.


Other Training

At the highest level, you learn to unbalance an opponent who is intentionally resisting being unbalanced. 

This advanced training is often demonstrated by the headmaster on senior students and represents the pinnacle of Aikido practice.


The Aikido training system progresses from the basics to more advanced and practical techniques, helping practitioners to become skilled in self-defense and martial arts.


Explanation of Special Terminology


Yoshinkan Aikido employs a specific terminology to describe techniques and movements. Understanding this specialized language is essential for effective communication and learning within the art. Here are some common terms used:


Circular

When instructed to move in a circular manner, it means you should follow a curved path instead of moving in a straight line. This emphasizes the importance of smooth, continuous, and rounded movements in Aikido techniques.


Lock Out

To "lock out" a joint means to apply pressure in a way that restricts the joint's movement. For instance, "lock out the wrist" means putting pressure on the wrist to prevent it from moving. This immobilizes the joint and limits your partner's mobility.


To Turn Over

When asked to "turn over" a body part, like the elbow or shoulder, it means you should rotate that part to face in the opposite direction. For example, "turn uke's elbow and shoulder over to the front" means rotating uke's arm so that the elbow and shoulder point forward, causing them to lose balance in that direction.


To Fix 

"Fixing" energy means controlling your partner's power to the point where it reaches its maximum extent, making it challenging for your partner to pull back or escape. When energy is "fixed," your partner cannot release their grip or regain control of the situation.


Open Up 

This term indicates a directional movement, either to the right or left. For example, "open up your front foot to the left" means shifting your foot to the left while turning your body to face that direction. "Open up your body to the rear" suggests making a turning movement with your back foot while changing the direction your body is facing.


These terms are crucial in Aikido for emphasizing fluid and controlled movements, restricting joint mobility, and proper positioning in techniques.


Conclusion


Yoshinkan Aikido is a powerful martial art that embodies a philosophy of balance, harmony, and self-improvement. 

Founded by Gozo Shioda, this martial art has a rich history, originating in post-war Japan and spreading worldwide. It is guided by core principles that emphasize a strong center, focused power, breath power, and the concept of ki. Timing, circular movements, and the art of blending and energy redirection are crucial. 

The Yoshinkan Aikido training system provides a structured path, focusing on basic movements, techniques, and advanced applications, including scenarios with multiple attackers. 

Ultimately, Yoshinkan Aikido transcends martial proficiency, offering a unique perspective on life, energy flow, and conflict resolution. It equips practitioners to move gracefully, find harmony, and face life's challenges with wisdom.