Objective: To investigate the effects of parachute jumping stress on plasma Arginin vasopression(AVP), Neuropeptide Y(NPY), Calcitoningene-related peptide(CGRP),Neurotensin(NT),Vasoactive intestinal polypeptide(VIP) levels in the newly recruited parachutists. Methods: Fifty-four new parachutists were recruited as subjects. They were randomly assigned to 3 groups: control group ,experiment-1 and experiment-2 group. Their blood samples were collected 24 hour before parachute jumping, just before boarding, and immediately after jumping for assessing the plasma levels of AVP, NPY, CGRP, NT, VIP with immunoassay. Results:(1) The plasma levels of AVP, NPY, CGRP, NT and VIP in experiment-1 and experiment-2 group were significantly higher than those of control group. In experiment-2 group the AVP,NPY, CGRP, and VIP plasma levels were significantly higher than those of experiment-1 group . Conclusion: The physiological impacts of parachute jumping on newly recruited parachutists should not be neglected.
