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Low frequency therapeutic EMF differently influences experimental muscle pain in female and male subjects
Author(s) -
Lyskov Eugene,
Kalezic Nebojsa,
Markov Marko,
Mild Kjell Hansson,
Thunberg Johan,
Johansson Håkan
Publication year - 2005
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.20092
Subject(s) - medicine , blood pressure , hypertonic saline , crossover study , anesthesia , heart rate , saline , diastole , cardiology , placebo , alternative medicine , pathology
Effects of a pulsating, half sine wave magnetic field (MF) with a frequency of 100 pps and 15 mT rms flux density, generated by the MD TEMF device (EMF Therapeutics, Inc., Chattanooga), on subjective pain rating, heart rate, and arterial blood pressure were tested in a double blind, crossover design study employing experimental muscle pain. Each of 24 healthy volunteers (12 females and 12 males, 24.7 ± 3.2 years of age) received painful stimulation induced by the infusion of 5% hypertonic saline (HS) into the erector spinae muscle during real and sham MF exposure, in counterbalanced order. Exposure to MF differently affects subjective pain estimates in females and males. MF exposure increased averaged pain level and time integral of pain ratings in females, whereas no statistically significant difference for these characteristics was found in males. Pain related elevation of systolic and diastolic blood pressure was observed during both real and sham EMF exposure in female and male subjects. Bioelectromagnetics 26:299–304, 2005. © 2005 Wiley‐Liss, Inc.