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Stressful Training Changes Endogenous Neurotransmitters in Human Plasma by Keiji Yamaguchi; Kazuo Toda; Yoshihiko Hayashi is a Psychology article available to read on EtoBox.

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## Abstract Stress is defined as a state of disharmony or threatened homeostasis. The purpose of the present study was conducted to reveal the effect of intensive training as rangers of Japan Ground Self Defence Force (JGSDF), which would be a strong stressor, on the level of neurotransmitters related with endogenous control of pain. Subjects were seven uniformed members (aged 19–21 years old) who underwent ranger training in the 8th Division of the JGSDF. Before and after the 40 days hard training, the levels of serotonin, β‐endorphin and three fractions of catecholamine in plasma were routinely measured. The levels of serotonin, β‐endorphin, noradrenaline and dopamine were significantly increased after the ranger training. A close relationship between the changes in skin pain threshold previously reported and the present levels of serotonin, β‐endorphin, noradrenaline and dopamine was observed in four of the seven rangers. These findings suggest that the intensive training changes level of some endogenous transmitters which might be related with stress‐induced analgesia through descending control of pain. Copyright © 2004 John Wiley & Sons, Ltd.

Who reads Stressful Training Changes Endogenous Neurotransmitters in Human Plasma?

Author

Keiji Yamaguchi; Kazuo Toda; Yoshihiko Hayashi

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1532-3005)

Published

2004

Field

Psychology (Social Sciences)