Arm plane

“Arm plane” describes the angle of the left arm at the top of the swing. If the arm is oriented more towards vertical, it is called steep; if it is more horizontal, the arm plane is called flat.

Arm swing

“Arm swing” describes the angle that the left upper arm sweeps over when viewed from the front. In a full swing, the arm covers an angle of approximately 135 degrees. If it is less, one speaks of a short arm swing; if it’s more, it’s a long arm...