（二）甩膀抖腕，放长击远 Swinging arm and shaking wrist, form a long distance strike
甩膀抖腕、放长击远是通背拳上肢屈伸和劲力蓄发及攻防兼备的基本技法。通背拳以劈、拍、摔、穿、攒为基本掌法，其他招势变化皆由此五掌生化而来，强调练时有定规，用时无定法，伸缩往来，快速多变。在运动中，要求肩、臂各关节尽量放松并前伸，通肩达臂，力贯梢节。两臂运使犹如皮鞭，立抡成圆，大开密合。腕要舒之如绵，柔活灵便。指腕肘舒，手臂的伸缩、收放才能势随人愿。肩舒则臂长，方可击远，从而达到一寸长一寸强、放长击远的效果。
It is the basic technique of limb flexion, power reserves and explosive with both attack and defense capabilities while practicing Back-through Quan.The basic motions of palm in the boxing are chop, slap, wrestle, penetrate and assemble, other changes are all derived from those five forms, stressing the regulating moves while practicing without fixed-moves while fighting so that the motion can be stretched out and drawn back with speed and varieties.During practice, shoulder and arm joints should be relaxed and stretched forward; the force will pass through arm and shoulder reaching two hands.Arms swing like a whip with a circle, attack violently and defense solidly.Wrist is relaxed like a piece of cotton, soft and agile.Fingers, wrists and elbows are all at a comfortable position; so that the arm stretches and retracts can be the status that we want it to be.Once shoulder is relaxed, arm can reach and strike a longer distance, achieving the effect of“One inch longer one inch stronger” and hitting from a longer distance.