When performed on the Balance Beam, a Back Handspring should start with legs together, but may either continue through to a Lunge position, or land with legs together.  The gymnast must start with arms overhead or in front, and jump backward while arching the back.  As the feet leave the beam, the back remains arched until the hands arrive on the beam.  At that time, the feet either split or remain together, and snap downward to the beam, arriving in a Lunge or together.