『合気道の奥義』「合気上げ」「合気下げ」解説 合気錬体会１６ Daito-ryu
The application of Aiki in the techniques demonstrated by senior students of Sagawa Sensei is analysed below.
At a time of 0.04 Tori offers his wrists to Uke. Tori induces Uke to apply Aiki by Tori withdrawing his wrists just as Uke is about to grab his wrists. The action of Tori withdrawing his wrists induces Uke to reverse direction of the muscle torque about his ankle joints so that his momentum continues forward and he becomes unbalanced to the front. This makes it easy for Tori to raise his wrists and bring Uke onto his toes. Aiki-Feint
Ｙ．Ｋ ０１ 合気錬体会１７
The application of Aiki in the techniques demonstrated is analysed below.
At a time of 0.26 Uke holds Tori's wrists from the rear. Tori's downward movement induces Uke to momentarily relax his upper body and to prepare his lower body to pull upwards by extending his legs. Consequently, the muscle torque about Uke's foot joints, due to him pulling upwards, are in the opposite direction to that required to resist Tori moving his wrists/body forward. Uke is unbalanced to the front. Aiki-Lead