Sympathetic tone persists for 24 hours following the long-term exercise stress

Abstract

  ［Introduction］It’s reported that the exercise has an influence on the neuroendocrine system. However, the report that examined neuroendocrine response to long-term exercise does not exist. The purpose of this study was to clarify the neuroendocrine response to the long-term exercise stress.［Methods］The subjects of the long-term exercise stress group were 13 university students who were members of rugby football clubs. They participated in the rugby football camp for 3 weeks. Blood samples were collected from the subjects before and after the long-term exercise stress.［Results］Adrenaline and ACTH, cortisol showed no significant difference (n.s.). But only noradrenaline was significantly increased after exercise (p < 0.05).［Conclusion］After the long-term exercise stress, noradrenaline increased by hyperactivity of the sympathetic system.