Definition: Breadth Axis Rotation

Breadth Axis Rotation: Breadth Axis (abbreviated BA) rotation refers to somersaulting rotation.  Breadth axis rotation refers either front or back somersaults.  This term is used primarily in reference to descriptions of skills for trampoline competition, although it could be used to refer to any other branch of gymnastics or any other sport.

Breadth access rotation rotates at different speeds depending on the body position of the somersault. If a layout position is considered a kind of base rotation speed, pike somersaults rotate about 1.5 times faster and tuck somersaults rotate about 2.5 times faster. There are, of course, numerous factors in the speed of rotation, including quickness into the tuck or pike position and the deepness of the tuck or pike compression (a measure relative tightness of the tuck or pike).

Speed of rotation is one of the key aspects of tumbling, especially multiple somersaulting skills. Height of the lift (conversion of horizontal tumbling momentum into vertical momentum) is another important factor. In general, the arms set the height of the lift, with a sharp arm lifting movement and stop and lock action transferring momentum from horizontal to vertical. Take-off angle is another key factor in breadth axis rotation. Different take-off angles contribute, predominantly, either to height, rotation or some combination of both.

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