 Fetal heart rate is considered an important index of fetal well-being, especially during the third trimester of pregnancy Rodney JR, Huntley BJ, Rodney WM, 2012. An increase in the FHR of 5-25 beats per min bpm in response to maternal exercise has been established as a normal reactionRiemann,Kanstrup Hansen, 2000however the normal FHR response to maternal exercise has remained unclear for several reasons 