An Assisted Trunk Block (also called or Augmented Outward Block or Supported Trunk Block) is a trunk block because it is protecting the trunk (the chest area). It is assisted because the off-hand is part of the movement.
The basic motion of the Assisted Trunk Block is similar to the Double Knifehand Block, but using fists instead of knifehands. The assisting hand is chambered straight out to the side, palm downward. The blocking hand is chambered at the waist, as with an Outward Block. As the blocking arm is brought up and outward, the assisting arm bends at the elbow to end palm-up in front of the chest.
- Supported Trunk Block on Taekwondo Preschool