sd main logo
Principle of Aiki and its Application in Aikido and Aikijujutsu
Menu

Muna Dori

Morihiro Saito Sensei. Muna Dori

The application of Aiki in the technique demonstrated by Morihiro Saito is analysed below.

Analysis

In this video Uke grabs Tori's jacket. Tori steps to the side to push Uke's arm in the same direction. As Tori steps to the side, Uke momentarily relaxes his arm to allow him to realign his hips using the muscle torque about his right ankle joint so as to move his hips to the rear to resist the push in the sidewards direction by pulling back. The upward atemi to the face induces Uke to apply Aiki by reversing the muscle torque about his ankle joint (i.e. rotating it forwards and not backwards) in an attempt to move his head upwards to reduce the impact of the atemi. This action unbalances Uke as he pulls back.

Daito Ryu Hiden Mokuroku

The application of Aiki in the technique demonstrated is analysed below.

Analysis

In this video at a time of 16.10 Uke approaches from the rear and grabs the front of Tori's jacket. Tori induces Uke to apply Aiki by raising himself up, which momentarily induces Uke to relax his upper body as he prepares to resist the upward motion by pushing down by bending at the waist. Tori unbalances Uke to the front as the muscle torque about Uke's waist joint is in the opposite direction to resist being pulled forward.

Tony Annesi - Aiki Refinements 3

The application of Aiki in the technique demonstrated by Tony Annesi is analysed below.

Analysis

At a time of 0.19 Uke grabs Tori's jacket with his left arm. Tori steps back with his right leg, which induces Uke to relax his left arm and bend forward at the waist to avoid becoming unbalanced. As Uke bends forward, Tori induces Uke to apply Aiki, by bending Uke's relaxed left arm which causes Uke to pull back. By Uke bending at the waist the muscle torque about the waist joint is moving in the reverse direction to that required to balance the contact reaction force that is pulling Uke forward, causing him to become unbalanced.