It is a movement in the progressions to ultimately achieving the Straight Arm to Planche to Handstand, the Planche Push Up, the One Arm Elbow Lever, the Ring Planche Push Up, the Maltese, the Inverted Cross, the One Arm Ab Wheel,

and

the Ring Ab Rollout.

It is 1st of 8 movements in the Horizontal Push,

and

Core categories starting with

Plank

.