Analgesic effects of transcutaneous electrical nerve stimulation and interferential currents on heat pain in healthy subjects.

This study examined whether transcutaneous electrical nerve stimulation or interferential current was more effective in reducing experimentally induced heat pain. Forty-eight young healthy subjects were randomly divided into the following groups: (i) transcutaneous electrical nerve stimulation; (ii) interferential current; and (iii) no stimulation. A multi-function electrical stimulator was used to generate the transcutaneous electrical nerve stimulation or interferential current. A thermal sensory analyser was used to record the heat pain threshold. The stimulation lasted for 30 minutes and the heat pain thresholds were measured before, during and after the stimulation. Transcutaneous electrical nerve stimulation (p = 0.003) and interferential current (p = 0.004) significantly elevated the heat pain threshold, but "no stimulation" did not. The thresholds of the transcutaneous electrical nerve stimulation and interferential current groups were significantly higher than that of the control group 30 minutes into the stimulation (p = 0.017). Both transcutaneous electrical nerve stimulation and interferential current increased the heat pain threshold to a similar extent during stimulation. However, the post-stimulation effect of interferential current lasted longer than that of transcutaneous electrical nerve stimulation.

[1]  Mark I. Johnson,et al.  A double blind placebo controlled investigation into the analgesic effects of inferential currents (IFC) and transcutaneous electrical nerve stimulation (TENS) on cold-induced pain in healthy subjects , 1999 .

[2]  J. Golding,et al.  Effects of acupuncture and transcutaneous electrical nerve stimulation on cold-induced pain in normal subjects. , 1984, Journal of psychosomatic research.

[3]  A I Basbaum,et al.  Endogenous pain control mechanisms: review and hypothesis , 1979 .

[4]  A I Basbaum,et al.  Endogenous pain control systems: brainstem spinal pathways and endorphin circuitry. , 1984, Annual review of neuroscience.

[5]  D. Jette.  Effect of different forms of transcutaneous electrical nerve stimulation on experimental pain. , 1986, Physical therapy.

[6]  D. J. Martin,et al.  Alteration of interferential current and transcutaneous electrical nerve stimulation frequency: effects on nerve excitation. , 1999, Archives of physical medicine and rehabilitation.

[7]  Mark I. Johnson,et al.  The Analgesic Effects of Different Swing Patterns of Interferential Currents on Cold-induced Pain , 1997 .

[8]  P. Wall,et al.  Pain mechanisms: a new theory. , 1965, Science.

[9]  G. De Domenico.  Pain relief with interferential therapy. , 1982, The Australian journal of physiotherapy.

[10]  J. W. Thompson,et al.  Analgesic effects of different frequencies of transcutaneous electrical nerve stimulation on cold-induced pain in normal subjects , 1989, Pain.

[11]  C. Woolf,et al.  Antinociceptive effect of peripheral segmental electrical stimulation in the rat , 1980, Pain.

[12]  Serge Marchand,et al.  Is TENS purely a placebo effect? A controlled study on chronic low back pain , 1993, Pain.

[13]  R. Sturrock,et al.  Transcutaneous electrical nerve stimulation in osteoarthrosis: a therapeutic alternative? , 1984, Annals of the rheumatic diseases.

[14]  D. Perrin.  Effect of interferential current on perceived pain and serum cortisol associated with delayed onset muscle soreness , 1997 .

[15]  Mark I. Johnson,et al.  The analgesic effects of interferential therapy on cold-induced pain in healthy subjects: a preliminary report , 1995 .

[16]  J. W. Thompson,et al.  Analgesic effects of different pulse patterns of transcutaneous electrical nerve stimulation on cold-induced pain in normal subjects. , 1991, Journal of psychosomatic research.

[17]  A. J. Robinson,et al.  Transcutaneous electrical nerve stimulation for the control of pain in musculoskeletal disorders. , 1996, The Journal of orthopaedic and sports physical therapy.

[18]  R. Newton,et al.  Effects of interferential current stimulation for treatment of subjects with recurrent jaw pain. , 1987, Physical therapy.