Ikkyō

Ikkyō literally translates as “first teaching,” because it is the first immobilization taught in the aikidō. Aikidōka half-jokingly call ikkyō the “lifetime technique,” since it contains all of their art's fundamentals, and all of their immobilizing techniques are essentially ikkyō-variants. Within Goshin-Jutsu, it is referred to as an arm lever after its governing principle -- the arm can be used as a lever to manipulate the body by exploiting the shoulder joint’s limited ability to reach backwards.

There are many ways to implement this concept; several of them are listed below. In general, arm levers involve grabbing the opponent's wrist or forearm, and pressing on the back of their upper arm or shoulder joint.

Inside arm lever

7-3 inside with an outside shutō block, immediately followed by a grasping block. [[Twisting|Twist] outside and shoot your opposite-side hand under the opponent’s armpit and simultaneously:

• Twist your hips to the inside.
• Hook behind the opponent’s shoulder with a thumbknuckle block, pulling it down.
• Raise your same-side hand to push the opponent’s arm down into their shoulder.

This forces the opponent to bend at the waist, setting up knee kicks to the head or throat, and/or downward elbow strikes to the neck or spine.

[video of inside arm lever, fast and slow, from various angles]

Outside arm lever

7-3 outside with an outside shutō block, immediately followed by a grasping block. Then, simultaneously:

• Twist your hips to the inside.
• Press down against the crook of the opponent’s shoulder with your palm or an ude uke.
• Raise your same-side hand to push the opponent’s arm down into their shoulder.

This forces the opponent to bend at the waist, setting up a knee kicks to the head or throat, and/or downward elbow strikes to the neck or spine.

[video of outside arm lever, fast and slow, from various angles]

Ikkyō-omote

This is aikidō’s forward, or inside, version of ikkyō. This is one of the more practical aikidō moves. Many other aikidō techniques, like nikkyō-omote and gokkyō, are ikkyō-variants, so 10-15% of aikidō training is devoted to repeatedly practicing this technique.

Cross-hand grab the opponent’s wrist, and pull it towards you. As the opponent pulls back to resist, raise your hand to arc the opponent’s arm upwards. 7-3 inside and hook your same-side thumb under the opponent’s elbow, pushing it forward into into their nose to off-balance them.

[photo]

Step forward, rolling the opponent’s arm downward to bend them over.

From here, diagonally step-slide forward and into the opponent to off-balance them with a hip-check. Then immediately diagonally step-slide forward and away from the opponent, tugging on their arm to pull them into the ground.

[video of ikkyo-omote, fast and slow, from various angles]

Once the opponent’s chest hits the mat, kneel in seiza, placing your knee in the opponent’s armpit. The opponent’s arm should be in front of you, perpendicular to their torso. Press straight down on their arm with both hand; one hand must be above the elbow, and one hand must be below the elbow. This, combined with the shoulder's limited range-of-motion, pins the opponent to the ground until the police can come collect them. For best results, roll the opponent’s arm forward for a locking pin. For a bonus wrist lock, bend the opponent’s wrist so their fingers point up.

Alternately, you can sit in seiza atop of the opponent’s arms, with one knee above their elbow, and one knee below the elbow. This will leave your hands free so you can dig through your pockets or purse for your cell phone to call the police.

Ikkyō-ura

This is aikidō’s rear, or outside, version of ikkyō. This is one of the more visually-stunning takedowns.

Again, cross-hand grab the opponent’s wrist, and pull it towards you. As the opponent pulls back to resist, raise your hand to arc the opponent's arm upwards. 7-3 outside into a sanchin-dachi, and hook your same-side thumb under the opponent’s elbow, and push it forward into their nose to off-balance them.

[photo]

Tenkan outside and extend your arms; point the opponent’s forearm diagonally downward, with their elbow on your centerline, to send them spiraling into the ground.

[video of ikkyo-ura, fast and slow, from various angles]

Once the opponent’s chest hits the mat, kneel in seiza, placing your knee in the opponent’s armpit. The opponent’s arm should be in front of you, perpendicular to their torso. Press straight down on their arm with both hand; one hand must be above the elbow, and one hand must be below the elbow. This, combined with the shoulder's limited range-of-motion, pins the opponent to the ground until the police can come collect them. For best results, roll the opponent’s arm forward for a locking pin. For a bonus wrist lock, bend the opponent’s wrist so their fingers point up.

Alternately, you can sit in seiza atop of the opponent’s arms, with one knee above their elbow, and one knee below the elbow. This will leave your hands free so you can dig through your pockets or purse for your cell phone to call the police.

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