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Effect of Earthing Mats on Sleep Quality in Rats.

Minsook Ye1, Woojin Jeong1, Hyo-Jeong Yu1

  • 1Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea.

International Journal of Molecular Sciences
|September 28, 2024
PubMed
Summary

Grounding with an earthing mat significantly improved sleep quality in rodents by reducing wake time and increasing total sleep, REM, and NREM sleep durations.

Keywords:
SOD1earthing matelectroencephalography (EEG)orexinsleep disturbances

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Area of Science:

  • Neuroscience
  • Sleep Science
  • Integrative Medicine

Background:

  • Grounding, or earthing, involves direct contact with the Earth's surface.
  • Potential health benefits of grounding include improved sleep, reduced stress, and decreased inflammation.
  • Scientific evidence for grounding's sedative effects is limited, necessitating further investigation.

Purpose of the Study:

  • To evaluate the sedative effectiveness of an earthing mat on sleep quality in a rodent model.
  • To explore the neural mechanisms underlying grounding's effects on sleep.
  • To investigate changes in brain orexin and superoxide dismutase (SOD) levels.

Main Methods:

  • Rodents were randomly assigned to four groups: control, earthing mat (7 and 21 days), and electronic blanket (21 days).
  • Electroencephalography (EEG) was used to analyze sleep patterns (wake, REM, NREM).
  • Orexin and SOD1 levels in brain tissue were measured.

Main Results:

  • Earthing mat exposure for 21 days significantly reduced wake time and increased total sleep, REM, and NREM sleep compared to controls.
  • The 21-day earthing group showed significant improvements in sleep parameters compared to the electronic blanket group.
  • Earthing significantly decreased orexin levels and increased SOD1 expression in the brain.

Conclusions:

  • Earthing mats demonstrate potential as a novel method for enhancing sleep quality.
  • The observed sedative effects may be mediated by reduced orexin signaling and increased antioxidant activity (SOD1).
  • Further research is warranted to confirm these findings and explore clinical applications.