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Related Concept Videos

Depression: Overview01:18

Depression: Overview

Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
Stress Prevention and Stress Management Techniques III01:25

Stress Prevention and Stress Management Techniques III

Regular exercise and meditation serve as essential tools in managing stress and promoting physical and mental well-being.
The Role of Exercise in Stress Management
Regular physical activity is essential for reducing stress and promoting cardiovascular health. Exercise strengthens the heart, enhances blood flow, keeps blood vessels flexible, and helps lower blood pressure, all of which reduce the body's stress response. Research shows that adults who exercise regularly have nearly half the risk...
Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over time, all...
Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Exercise Stress Test01:26

Exercise Stress Test

Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Electroconvulsive Therapy01:30

Electroconvulsive Therapy

Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early years,...

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Related Experiment Video

Updated: Jun 29, 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

Exercise for depression.

Gillian E Mead1, Wendy Morley, Paul Campbell

  • 1School of Clinical Sciences and Community Health, University of Edinburgh, Room F1424, Royal Infirmary, Little France Crescent, Edinburgh, UK, EH16 4SA. gillian.e.mead@ed.ac.uk

The Cochrane Database of Systematic Reviews
|October 10, 2008
PubMed
Summary
This summary is machine-generated.

Exercise may improve depression symptoms, but evidence from high-quality studies shows only a moderate, non-significant effect. More rigorous trials are needed to confirm exercise’s benefits for depression treatment.

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The Forced Swim Test as a Model of Depressive-like Behavior
05:42

The Forced Swim Test as a Model of Depressive-like Behavior

Published on: March 2, 2015

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Last Updated: Jun 29, 2026

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty
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Published on: October 6, 2016

The Forced Swim Test as a Model of Depressive-like Behavior
05:42

The Forced Swim Test as a Model of Depressive-like Behavior

Published on: March 2, 2015

Area of Science:

  • Exercise science
  • Clinical psychology
  • Psychiatry

Background:

  • Depression is a leading global cause of illness and death.
  • Antidepressants and psychotherapy are common treatments.
  • Exercise is a potential alternative approach for depression management.

Purpose of the Study:

  • To evaluate the effectiveness of exercise in treating depression.
  • To synthesize findings from randomized controlled trials on exercise and depression.

Main Methods:

  • Searched multiple databases (Medline, Embase, etc.) and other sources for relevant studies.
  • Included randomized controlled trials comparing exercise to standard care, no treatment, or placebo in adults with depression.
  • Calculated pooled effect sizes using a random effects model, focusing on standardized mean differences (SMD).

Main Results:

  • Twenty-eight trials were included, with 25 providing data for meta-analysis.
  • A large clinical effect (SMD = -0.82) was observed when including all trials.
  • However, high-quality trials (adequate allocation concealment, intention-to-treat, blinded assessment) showed a moderate, non-significant effect (SMD = -0.42).

Conclusions:

  • Exercise appears to benefit depressive symptoms, but robust trials indicate only moderate, non-significant effects.
  • Further methodologically sound research is required to accurately estimate exercise's efficacy, risks, and costs.
  • Future reviews could explore exercise's impact on dysthymia.