With EA at Jianqian ( Extra ) , Taijian ( Extra ) , Binao ( LI @ ) , Jianzhong ( Extra ) , Jianzhen ( SI @ ) , Naoshu ( SI @ ) , Jianwaishu ( SI @ ) and Bingfeng ( SI @ ) , IW group was treated with intermittent wave with a frequency of @ Hz , DW group was treated with disperse-dense wave with a frequency of @ Hz/@ Hz and CW group was treated with continuous wave with a frequency of @ Hz .