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Passive Care Research for Doctors
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Interferential Therapy - Low Back Pain
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Hurley, DA et al. Interferential Therapy Electrode Placement Technique in Acute Low Back Pain: A Preliminary Investigation. Arch Phys Med Rehabil 2001;82:485-93.
The objective of this study was to determine the efficacy of interferential therapy (IFT) electrode placement technique compared with a control treatment in subjects with acute low back pain (LBP).
The study was a single-blind, randomized, controlled trial with a 3-month follow-up.
A random sample of 60 eligible patients with back pain (28 men, 32 women) were recruited by general practitioners and self-referral for physiotherapy treatment and randomly assigned to 1 of 3 groups; (1) "IFT painful area" and The Back Book, (2) "IFT spinal nerve" and The Back Book, and (3) "Control," The Back Book only.
Standardized IFT stimulation parameters were used: carrier frequency 3.85kHz; 140Hz constant; pulse duration 130_s; 30 minutes' duration.
Pain Rating Index, Roland-Morris Disability Questionnaire (RMDQ), and EuroQol were completed by subjects' pretreatment, at discharge, and 3-month follow-up.
RESULTS:
All groups had significant improvements in all outcomes at follow-up. Subjects managed by IFT spinal nerve and The Back Book displayed both a statistically significant and clinically meaningful reduction in functional disability (RMDQ), compared with management via IFT painful area and The Back Book combined or The Back Book alone.
CONCLUSION:
The findings showed that IFT electrode placement technique affects LBP-specific functional disability.
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