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Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
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Maintaining sleep and physical activity alleviate mood instability.

Rudy Bowen1, Lloyd Balbuena, Marilyn Baetz

  • 1Department of Psychiatry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.

Preventive Medicine
|July 6, 2013
PubMed
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Maintaining exercise and adequate sleep can decrease mood instability, a key aspect of neuroticism. Lifestyle changes, particularly exercise and sleep, positively impact personality traits over time.

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Area of Science:

  • Psychology
  • Health Sciences
  • Behavioral Science

Background:

  • Mood instability is a core characteristic of neuroticism.
  • Previous research suggests a link between lifestyle and personality traits.

Purpose of the Study:

  • To investigate if changes in exercise, sleep duration, and leisure predict reduced mood instability over time.
  • To explore the modifiability of neuroticism through lifestyle interventions.

Main Methods:

  • Utilized data from 3374 participants in the British Health and Lifestyle Study.
  • Assessed mood instability using the Eysenck Personality Inventory-Neuroticism subscale (EPI-N) at two time points, 7 years apart.
  • Analyzed self-reported changes in exercise, sleep, and leisure as predictors of mood instability.

Main Results:

  • Mood instability naturally decreases with age.
  • Consistent exercise was associated with decreased mood instability (beta=-0.21).
  • Reduced sleep duration was linked to increased mood instability (beta=0.14); leisure time changes were not independently significant.

Conclusions:

  • Personality traits, specifically mood instability, can be influenced by lifestyle modifications.
  • Exercise and sufficient sleep are crucial for promoting mood stability.
  • These lifestyle factors offer potential for preventative mental and physical health benefits.