Therefore, {HEAD ~ riders pedaling activities} are transmitted to the base and chassis, so that the rider can feel the same swinging effects as provided by {TAIL ~ an outdoor bicycle}, and the riders muscles are not fatigued 
Therefore , { HEAD ~ riders pedaling activities } are transmitted to the base and chassis , so that the rider can feel the same swinging effects as provided by { TAIL ~ an outdoor bicycle } , and the riders muscles are not fatigued
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH