Flexion-relaxation ratio in computer workers with and without chronic neck pain

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Carina Ferreira PinheiroThais Cristina Chaves

Abstract

This study evaluated the flexion-relaxation phenomenon (FRP) and flexion-relaxation ratios (FR-ratios) using surface electromyography (sEMG) of the cervical extensor muscles of computer workers with and without chronic neck pain, as well as of healthy subjects who were not computer users. This study comprised 60 subjects 20-45years of age, of which 20 were computer workers with chronic neck pain (CPG), 20 were computer workers without neck pain (NPG), and 20 were control individuals who do not use computers for work and use them less than 4h/day for other purposes (CG). FRP and FR-ratios were analyzed using sEMG of the cervical extensors. Analysis of FR-ratios showed smaller values in the semispinalis capitis muscles of the two groups of workers compared to the control group. The reference FR-ratio (flexion relaxation ratio [FRR], defined as the maximum activity in 1s of the re-extension/full flexion sEMG activity) was significantly higher in the computer workers with neck pain compared to the CG (CPG: 3.10, 95% confidence interval [CI95%] 2.50-3.70; NPG: 2.33, CI95% 1.93-2.74; CG: 1.99, CI95% 1.81-2.17; p<0.001). The FR-ratios and FRR of sEMG in this study suggested that computer use could increase recruitment of the semispina...Continue Reading

References

Oct 21, 1998·Archives of Physical Medicine and Rehabilitation·T SihvonenO Airaksinen
Dec 5, 2000·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·C M SommerichS D Moon
Jan 24, 2002·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·E A ClancyR Merletti
Apr 12, 2003·Clinical Biomechanics·Moshe SolomonowBing He Zhou
Jun 9, 2004·Clinical Biomechanics·Guy GosselinIan Brown
Apr 29, 2005·Occupational Medicine·Jens Wahlström
Oct 18, 2005·Journal of Manipulative and Physiological Therapeutics·Christopher J Colloca, Richard N Hinrichs
Nov 1, 2005·Pathophysiology : the Official Journal of the International Society for Pathophysiology·Minna K AiraksinenOlavi Airaksinen
Aug 11, 2006·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Angus BurnettJulian Rodrigues
Dec 13, 2006·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·B CagnieD Cambier
Jan 2, 2007·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Deborah Falla, Dario Farina
Jan 8, 2008·Current Rheumatology Reports·Deborah Falla, Dario Farina
Jun 12, 2008·Occupational Medicine·Prawit JanwantanakulThanes Sinsongsook
Jul 1, 2008·Archives of Physical Medicine and Rehabilitation·Howard Vernon
Jul 1, 2008·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Angus BurnettGry Wang Helgestad
May 8, 2009·Annals of Physical and Rehabilitation Medicine·J-P PialasseM Descarreaux
Mar 9, 2010·Journal of Biomechanics·Carlo J De LucaSerge H Roy
Mar 12, 2010·BMC Musculoskeletal Disorders·Jean-Philippe PialasseMartin Descarreaux
Jun 15, 2011·Best Practice & Research. Clinical Rheumatology·D G HoyR Buchbinder
May 15, 2012·Occupational and Environmental Medicine·Arpalak PaksaicholAllard J van der Beek
Oct 12, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Nader MaroufiSeyedeh Roghayeh Mousavi Khatir
Jan 15, 2014·Clinical Biomechanics·Ashish D NimbarteXiaopeng Ning
May 7, 2014·Pain Research and Treatment·Mikkel BrandtLars L Andersen
Dec 6, 2014·Journal of Occupational Health·Arpalak PaksaicholPrawit Janwantanakul
Apr 7, 2015·Clinical Biomechanics·Mahboobeh ZabihhosseinianBernadette Murphy

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Citations

Jan 5, 2019·Human Factors·Federico QuinziAndrea Macaluso
Jan 26, 2021·Journal of Back and Musculoskeletal Rehabilitation·Hasan ShamsiFarshad Okhovatian

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