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Abstract

Objective: To assess the effects of a burst application of transcutaneous electrical nerve stimulation (TENS) on cervical range of motion and pressure point sensitivity of latent myofascial trigger points (MTrPs). Design: A single-session, single-blind randomized trial. Setting: General community rehabilitation clinic. Participants: Individuals (N=76; 45 men, 31 women) aged 18 to 41 years (mean ± SD, 23±4y) with latent MTrPs in 1 upper trapezius muscle. Interventions: Subjects were randomly divided into 2 groups: a TENS group that received a burst-type TENS (pulse width, 200μs; frequency, 100Hz; burst frequency, 2Hz) stimulation over the upper trapezius for 10 minutes, and a placebo group that received a sham-TENS application over the upper trapezius also for 10 minutes. Main Outcome Measures: Referred pressure pain threshold (RPPT) over the MTrP and cervical range of motion in rotation were assessed before, and 1 and 5 minutes after the intervention by an assessor blinded to subjects' treatment. Results: The analysis of covariance revealed a significant group × time interaction (P<.001) for RPPT: the TENS group exhibited a greater increase compared with the control group; however, between-group differences were small at 1 minute (0.3kg/cm2; 95% confidence interval [CI], 0.10.4) and at 5 minutes (0.6kg/cm2; 95% CI, 0.30.8) after treatment. A significant group × time interaction (P=.01) was also found for cervical rotation in favor of the TENS group. Between-group differences were also small at 1 minute (2.0°; 95% CI, 1.02.8) and at 5 minutes (2.7°; 95% CI, 1.73.8) after treatment. Conclusions: A 10-minute application of burst-type TENS increases in a small but statistically significant manner the RPPT over upper trapezius latent MTrPs and the ipsilateral cervical range of motion. © 2011 American Congress of Rehabilitation Medicine.

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A.L., R.-F., V., G.-S., J., G.-R., & C., F.-D.-L.-P. (2011). Effects of burst-type transcutaneous electrical nerve stimulation on cervical range of motion and latent myofascial trigger point pain sensitivity. Archives of Physical Medicine and Rehabilitation, 92(9), 1353–1358. https://doi.org/10.1016/j.apmr.2011.04.010 LK  - http://sfx.library.uu.nl/utrecht?sid=EMBASE&issn=00039993&id=doi:10.1016%2Fj.apmr.2011.04.010&atitle=Effects+of+burst-type+transcutaneous+electrical+nerve+stimulation+on+cervical+range+of+motion+and+latent+myofascial+trigger+point+pain+sensitivity&stitle=Arch.+Phys.+Med.+Rehabil.&title=Archives+of+Physical+Medicine+and+Rehabilitation&volume=92&issue=9&spage=1353&epage=1358&aulast=Rodr%C3%ADguez-Fern%C3%A1ndez&aufirst=Angel+L.&auinit=A.L.&aufull=Rodr%C3%ADguez-Fer

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