Comparison of the hypoalgesic efficacy of low-frequency and burst-modulated kilohertz frequency currents.
BACKGROUND AND PURPOSE: A within-subject randomized controlled trial was conducted to compare monophasic pulsed current (PC) with a frequency of 50 Hz and a phase duration of 500 microseconds with burst-modulated alternating current (BMAC) (1-kHz alternating current, burst modulated at a frequency o...
| Publicado en: | Physical Therapy Vol. 87; no. 8; pp. 1056 - 1064 |
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| Autores principales: | , |
| Formato: | clinical trial research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Aug2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106158770&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106158770 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00319023 PTH jtl: Physical Therapy issn: 00319023 maglogo: N pubinfo: dt: Aug2007 vid: 87 iid: 8 pid: 10398 pub: Oxford University Press / USA artinfo: ui: 106158770 2009643578 10.2522/ptj.20060203 NLM17578937 106158770 ppf: 1056 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Comparison of the hypoalgesic efficacy of low-frequency and burst-modulated kilohertz frequency currents. aug: au: Ward AR Oliver WG affil: Department of Human Physiology and Anatomy, Faculty of Health Sciences, La Trobe University, Victoria 3086, Australia. sug: subj: Analgesia Methods Cold Adverse Effects Electric Stimulation Methods Pain Prevention and Control Adult Clinical Trials Pain Threshold Pain Etiology Paired T-Tests Post Hoc Analysis Repeated Measures Two-Way Analysis of Variance Human Adult: 19-44 years ab: BACKGROUND AND PURPOSE: A within-subject randomized controlled trial was conducted to compare monophasic pulsed current (PC) with a frequency of 50 Hz and a phase duration of 500 microseconds with burst-modulated alternating current (BMAC) (1-kHz alternating current, burst modulated at a frequency of 50 Hz with a 20% duty cycle) to establish whether there were differences in hypoalgesic efficacy as assessed by cold pain threshold measurements. SUBJECTS: Twenty-two young adults who were healthy and drawn from a population of students of La Trobe University volunteered to participate in the study. Nineteen subjects (7 male, 12 female) met the inclusion criteria. Method: Each participant experienced monophasic PC and BMAC. Time to cold pain threshold was measured before, during, and after the electrical stimulation intervention. RESULTS: Both PC and BMAC currents were effective at elevating the cold pain threshold, although there was no statistically significant difference between the 2 currents during stimulation. DISCUSSION AND CONCLUSION: Pulsed current and BMAC appear to be equally effective at elevating the cold pain threshold. Analysis indicated that if any real difference exists, it would only be apparent with large (100) subject numbers. Any differences in hypoalgesic efficacy thus are not likely to be clinically important. pubtype: Academic Journal doctype: clinical trial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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