Baroreflex and metaboreflex control of cardiovascular system during exercise in space.
This brief review summarizes current knowledge on the neural mechanisms of cardiovascular regulation during exercise in space, with specific emphasis on the role of the arterial baroreflex and the muscle metaboreflex, with the attendant modifications in autonomic nervous system activity, in determining the cardiovascular responses to exercise in microgravity conditions. Available data suggest that the muscle metaboreflex is enhanced during dynamic exercise in space and that the potentiation of the muscle metaboreflex affects the vagally mediated arterial baroreflex contribution to HR control.
Pagani
Massimo
M
UO Telematica per la Medicina e Medicina dello Sport, Ospedale "L. Sacco", Università degli Studi, Milano, Italy. mp@ctnv.unimi.it
Pizzinelli
Paolo
P
Beltrami
Silvia
S
Massaro
Michele
M
Lucini
Daniela
D
Iellamo
Ferdinando
F
D017704:Baroreflex / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D002319:Cardiovascular System; D015444:Exercise / Q000502:physiology*; D005118:Extraterrestrial Environment; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D014893:Weightlessness