The information of the angle, {TAIL ~ velocity}, or acceleration of the arm 220′ during gait is fed into {HEAD ~ the signal generator} 208′ via a wire 218′, or wireless signal, in real time 
The information of the angle , { TAIL ~ velocity } , or acceleration of the arm 220′ during gait is fed into { HEAD ~ the signal generator } 208′ via a wire 218′ , or wireless signal , in real time
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH