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Updated: May 23, 2026

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty
07:27

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Published on: October 6, 2016

Exercise intervention may prevent depression.

S-B He1, W-G Tang, W-J Tang

  • 1Department of Neurology, Zhoushan Hospital, Zhoushan, China.

International Journal of Sports Medicine
|April 17, 2012
PubMed
Summary
This summary is machine-generated.

Regular exercise, like swimming, can significantly improve depression symptoms in rats. This study found exercise increases key brain chemicals like serotonin and dopamine, while reducing stress hormones.

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Last Updated: May 23, 2026

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty
07:27

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty

Published on: October 6, 2016

Area of Science:

  • Neuroscience
  • Behavioral Science
  • Exercise Physiology

Background:

  • Physical activity is recognized for its role in managing depression.
  • The precise biological mechanisms linking exercise to improved mental health are not fully understood.

Purpose of the Study:

  • To investigate the neurobiological mechanisms through which voluntary exercise alleviates depressive behaviors.
  • To examine the effects of exercise on plasma cortisol levels and hippocampal monoamine neurotransmitters in a rat model of depression.

Main Methods:

  • A rat model of depression was induced using chronic mild stress (CMS).
  • Exercise intervention involved voluntary swimming for 10 weeks.
  • Behavioral assessments included the open-field test and sucrose consumption test.
  • Physiological markers measured were serum cortisol (radioimmunoassay) and hippocampal monoamine neurotransmitters (HPLC-ED).

Main Results:

  • Exercise significantly improved depressive behaviors in CMS rats.
  • CMS induced a significant increase in serum cortisol levels compared to controls.
  • Exercise led to significant increases in hippocampal serotonin, dopamine, and norepinephrine levels.

Conclusions:

  • Voluntary exercise effectively reverses and prevents stress-induced decreases in serotonin and norepinephrine.
  • Exercise helps restore dopamine levels in the hippocampus, contributing to the amelioration of depressive symptoms.
  • These findings highlight exercise as a viable intervention for depression by modulating key neurotransmitter systems and stress responses.