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The Effect of a Pulsed Electromagnetic Field with Time on Pain in Muscle Crushed Rat Model

  • Kim, Min-Hee (Department of Physical Therapy & Rehabilitation, College of Health Sciences, Eulji University) ;
  • Cheon, Song-Hee (Department of Physial Therapy, Young-San University)
  • Received : 2011.12.27
  • Accepted : 2012.01.19
  • Published : 2012.03.31

Abstract

Acute injuries to skeletal muscles can lead to significant pain and disability. Muscle pain results in muscle weakness and range of motion (ROM) decreases. Pulsed electromagnetic fields (PEMF) promote tissue repair, healing rates and reduce musculoskeletal pain. The results of many previous studies suggest that PEMF can contribute to chronic pain reduction, particularly in musculoskeletal injurys. However, we do not have enough information of its effects compared to a placebo. The principal objective of this study was to investigate differences in acute pain induced by the direct destruction of muscle tissue (extensor digitorum) with varying times of the application of PEMF, measured through the expression of c-fos on the spinal cord. Significant reduction of pain was found in groups exposed to PEMF and the group exposed to PEMF immediately after muscle injury showed the most significant differences. In conclusion, PEMF may be a useful strategy in reducing acute pain in muscle injury.

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Cited by

  1. Pulsed Ultrasound and Pulsed Electromagnetic Field in the Treatment of Muscle Contusion in Rats vol.17, pp.3, 2012, https://doi.org/10.4283/JMAG.2012.17.3.225
  2. Pulsed Electromagnetic Fields to Influence Pain and Muscle Healing Following Muscle Injury in Rats vol.20, pp.4, 2015, https://doi.org/10.4283/JMAG.2015.20.4.377