Effect of short-term extremely low-frequency electromagnetic field on respiratory functions

Authors: Sirinyildiz F, Cesur G, Elmas O, Elmas S, Comlekci S, Yazici O, Keskin A, Keskin HE

Year: 2025 Jun 2

Category: Physiology

Journal: Revista da Associação Médica Brasileira (1992)

DOI: 10.1590/1806-9282.20241812

URL: https://www.scielo.br/j/ramb/a/9mQPKdGLX8DJ3mPwSqygwTG/?lang=en

Abstract

Overview

Exposure to extremely low-frequency electromagnetic fields (ELF-EMFs) can cause harmful or beneficial effects on living organisms. This study aimed to examine the potential impacts of ELF-EMF exposure on respiratory physiology by analyzing changes in respiratory function parameters during and after short-term ELF-EMF exposure.

Methods

  • Twenty Wistar albino rats were randomly divided into two groups: control and electromagnetic field.
  • Lung function was measured using a noninvasive head-out plethysmography technique.
  • The electromagnetic field group was exposed to a 50 Hz field at a magnetic flux density of 0.3 mT for 2 minutes.
  • Respiratory function parameters were recorded before, during, and after EMF exposure. Parameters measured included:
    • Respiratory rate
    • Respiratory cycle duration
    • Inspiration time
    • Expiration time
    • Tidal volume
    • Minute volume
    • Peak inspiratory flow
    • Peak expiratory flow

Findings

  • No significant difference in respiratory parameters between groups before EMF exposure.
  • During ELF-EMF exposure:
    • Mean respiratory rate in the EMF group was lower than the control group.
    • Respiratory cycle duration, inspiration time, and tidal volume in the EMF group were higher than the control group.
  • No significant differences in respiratory parameters after EMF exposure.

Conclusion

Short-term exposure to extremely low-frequency electromagnetic fields decreased respiratory rate and increased respiratory cycle duration, inspiration time, and tidal volume in rats. These findings indicate a connection between EMF exposure and altered respiratory function, highlighting the importance of considering EMF safety due to potential health risks.

extremely low-frequency electromagnetic fields respiratory function animal study health risk EMF exposure physiology short-term effects
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