Aiki Age and Sage

Aiki Age Elements

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

Analysis

At a time of 01.37 Uke holds Tori's jo. Tori induces Uke to apply Aiki by Tori lowering his body causing Uke to pull upwards on the jo. The action of Uke pulling upwards causes the muscle torque about the ankle joints to be in the reverse direction to that required to balance the pushing reaction force due to Tori moving the jo towards Uke, causing Uke to become unbalanced to the rear.

Kokyo-ho Aiki Age, Aiki Sage

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

Analysis

At a time of 00.56 Uke holds Tori's wrist. Tori induces Uke to apply Aiki by Tori moving the outer edge of his wrist towards Uke causing Uke to momentarily relax his upper body and apply muscle torque about his knee joints to push forwards. This action causes the muscle torque about Uke's knee joints to be in the reverse direction to that required to resist Tori turning his wrist to the inside, causing Uke to become unbalanced to the side.

At a time of 01.18 Uke holds Tori's wrist. Tori induces Uke to apply Aiki by Tori moving his wrist towards Uke causing Uke to momentarily relax his upper body and apply muscle torque to his knee joints to push forwards. The action of Uke pushing forwards causes the muscle torque about his knee joints to be in the reverse direction to that required to resist Tori turning his wrist to the inside, causing Uke to become unbalanced to the side.

Aiki Age and Aiki Sage

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


Analysis

At a time of 00.41 both Ukes support a rod held horizontally at arms length. Tori induces Uke to apply Aiki by resting his arm/body on top of the rod causing both Ukes to pull upwards on the rod. The action of pulling upwards cause the muscle torque about the ankle joints to be in the reverse direction to that required to balance the pushing reaction force due to Tori moving forwards, causing the Ukes to become unbalanced to the rear.

The same analysis applies to the rod being grasped by Tori at a time of 01.24.

Age and Sage Application for Aikido 1, July 7 2012

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

Analysis

At a time of 00.49 Uke resists being pushed to the rear, at the shoulder, by Tori. Tori induces Uke to apply Aiki by resting his arm/body on top of Uke's shoulder causing Uke to resist by straightening his body to push upwards. The action of straightening the body causes the muscle torque about the ankle joints to be in the reverse direction to that required to balance the pushing reaction force due to Tori moving forwards, causing Uke to become unbalanced to the rear.


How to Aiki: Lesson 4 Aiki Age

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


Analysis

At a time of 01.54 Uke comes to grab Tori's wrists. As Uke is about to make contact, Tori induces Uke to apply Aiki by withdrawing his wrists. This action induces Uke to reverse the muscle torque about his knee joints so as to follow Tori's wrists and become unbalance to the front.