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 turning his wrist so the outer edge moves upwards causing Uke to push downwards on Tori's wrist. The action of Uke pushing downwards causes the muscle torque about the knee joints to be in the reverse direction to that required to balance the pulling reaction force due to Tori also turning his wrist away from Uke, causing Uke to become unbalanced to the front.

At a time of 01.08 Uke holds Tori's wrist. Tori induces Uke to apply Aiki by Tori turning his wrist so the inner edge moves upwards causing Uke to push downwards on Tori's wrist. The action of Uke pushing downwards causes the muscle torque about the knee joints to be in the reverse direction to that required to balance the pulling reaction force due to Tori also turning his wrist away from Uke, causing Uke to become unbalanced to the front.


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 holds Tori's wrists. Tori induces Uke to apply Aiki by Tori moving his wrists forward causing Uke to push against Tori's wrists. The action of Uke pushing forwards causes the muscle torque about the knee joints to be in the reverse direction to that required to balance/stop the upward motion of Tori's wrists and the application of the wrist lock.  Uke is then unbalanced in the forward direction. To be effective, Tori has to quickly move his wrists from going forwards to upwards so that Uke is still pushing forwards as Tori's wrists moves upwards.