After treatment , the differences in the gait cycle , the phase time of standing ( % ) , the phase time of single support ( % ) , the phase time of unilateral sway ( % ) on the affected ( healthy ) foot and phase time of double support ( % ) were significant as compared with those before treatment in the patients of the two groups ( all P < @ ) , in which , the gait cycle ( @ + / - @ vs @ + / - @ ) , the phase time of standing ( % ) on the affected ( healthy ) foot -LSB- ( @ + / - @ ) % vs ( @ + / - @ ) % , ( @ + / - @ ) % vs ( @ + / - @ ) % -RSB- , the phase time of unilateral sway ( % ) on the affected ( healthy ) foot -LSB- ( @ + / - @ ) % vs ( @ + / - @ ) % , ( @ + / - @ ) % vs ( @ + / - @ ) % -RSB- and the phase time of double support ( % ) -LSB- ( @ + / - @ ) % vs ( @ + / - @ ) % -RSB- in the yin-yang needling group were improved much obviously after treatment as compared with those in the conventional acupuncture group .