Introduction to Ippon Seoi Nage

Ippon Seoi Nage, also known as single-arm shoulder throw, is one of the most recognized and popular techniques in judo. This technique combines hand positioning with significant hip movement and requires understanding of several key mechanical principles.

Balance Breaking (Kuzushi)

The foundational principle for Ippon Seoi Nage is establishing kuzushi by bringing the opponent onto their toes rather than allowing them to remain flat-footed. Balance must be broken forward simultaneously with entry, not as separate sequential actions.

Grip and Hand Positioning

The initial grip uses standard kumikata with fingers working inward just below the shoulder and chest area. The second hand must be placed underneath the opponent's elbow rather than on top, positioned deep inside for maximum control and effectiveness.

Entry and Initial Step

Entry begins by stepping the right toe to the opponent's right toe while simultaneously lifting and elevating them off the mat through balance breaking. The arm must come under the opponent's shoulder, with the hand positioned to nearly touch the ear to ensure proper shoulder capture.

Shoulder Positioning and Common Errors

The throwing arm's shoulder must contact the opponent's shoulder directly, not rest on the neck muscles, as incorrect positioning causes the throw to execute in the opposite direction. The left hand must continuously pull forward while the right hand connects with the opponent's shoulder.

Body Positioning and Stance

During the turn, the feet must be positioned inside the opponent's base with legs close together and even. The practitioner should face the same direction as their feet in a comfortable, balanced stance that does not interfere with throwing dynamics.

Hip and Head Mechanics

The hips must be positioned directly underneath the opponent's belt by dropping low rather than remaining high. Head action turns and flips in the opposite direction, with the knees bent and good body contact maintained throughout the execution.

Foot Position and Execution

The practitioner must remain on their toes with heels off the mat during execution, as this positioning is essential for proper knee mechanics and later transitions. The throw is executed by turning the head, maintaining shoulder contact, and using proper kuzushi and tukkuri to complete the technique.

Completion and Direction

The opponent should land directly in front of the practitioner after being thrown over their head; landing to the side indicates an execution error. Control must be maintained throughout to protect the opponent from injury and enable transitions into follow-up techniques.

How to do Ippon Seoi Nage

Sampson Judo

Seoi Nage

2 min read·9 key moments·PT6M12S video

Key Takeaways

•Introduction to Ippon Seoi Nage
•Balance Breaking (Kuzushi)
•Grip and Hand Positioning
•Entry and Initial Step

How to do Ippon Seoi Nage - Here I am showing how to do a standard Ippon Seoi Nage. Its important that you get good shoulder to shoulder contact and dont' let the arm slip on to your neck muscles for this throw to work. Please like, comment and share the video if you enjoyed it! Finger tape: https://amzn.to/2zbqvyh Mizuno Judogi: https://amzn.to/3gasbZz Pre-washed soft black belt: https://amzn.to/2XpNIEK My ultimate technique reference book: https://amzn.to/2LT46Zk Mind over muscle by Jigoro Kano: https://amzn.to/2zeDTSi

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Frequently Asked Questions

What does this video teach about seoi nage?

This video covers introduction to ippon seoi nage, balance breaking (kuzushi), grip and hand positioning. It provides detailed instruction from Sampson Judo.

How long does it take to learn seoi nage?

The basic mechanics can be understood in a single session, but developing reliable execution requires consistent drilling over weeks of practice. This 9-part breakdown helps structure your training by isolating each phase of the technique.