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Interplay in deformation between dorsal neck muscles: an observational ultrasound study
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Physiotherapy.
2018 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Introduktion: Nacksmärta är ett ökande problem i dagens samhälle och nedsatt muskelfunktion kan leda till funktionsnedsättning. Nackspecifik träning kan minska smärta och öka funktion men hur musklerna aktiveras i övningarna är okänt. Ultraljud med speckle tracking analys kan användas för att mäta deformation och deformationshastighet i muskulatur. Syfte: Att med ultraljud undersöka skillnader i deformation mellan dorsala nackmuskler samt musklernas samspel vid fyrfotastående rotationsträning. Metod: Deformation och deformationshastighet i dorsala nackmuskler hos tjugo nackfriska individer mäts med hjälp av ultraljud och analyseras med speckle tracking. Repeated measure ANOVA används för att undersöka skillnader i deformation och deformationshastighet och Kendall’s tau correlation används för att undersöka sampel mellan musklerna.  Resultat: Semispinalis capitis påvisar den högsta deformationen (F(1.23, 24.26) =6.90, p=0.01) i vänsterrotation jämfört med multifider (p=0.05) och trapezius (p=0.03). Semispinalis capitis visar också signifikant korrelation angående samspel med trapezius i rotation vänster (r=0.42) och höger (r=0.34) gällande deformation. Högst deformationshastighet har också semispinalis capitis i både rotation vänster (F(1.43, 27.25)=9.05, p=< 0.01) och höger (F(2, 38)=14.26, p=< 0.01) jämfört med trapezius och multifider. Semispinalis capitis har ett samspel med trapezius i rotation höger (r=0.47) och med multifider i både rotation vänster (r=0.58) och höger (r=0.62).  Slutsats: Ultraljudsundersökning visar att i fyrfotastående rotationsträning samverkar semispinalis capitis med både trapezius och multifider men hade en högre grad av deformation än dessa muskler. Detta bör ses som en pilotstudie för att mäta nackmuskelfunktion i en rehabiliteringsövning. Kompletterande studier behövs för att kunna avgöra om deformationen var aktiv eller passiv.

Abstract [en]

Introduction: Neck pain is an increasing problem today and impaired neck muscle function may lead to disability. Neck specific training can reduce pain and increase function, but the activation of the muscles is unknown. Ultrasound with post-process speckle tracking can be used to measure deformation and deformation rate of the muscles. No previous studies have investigated neck exercise used in rehabilitation of neck pain. Aim: To investigate differences in deformation between different muscle layers in dorsal neck muscles and their interplay during quadruped rotational training in neck-healthy subjects. Method: Deformation and deformation rate were investigated in three dorsal neck muscles in twenty neck healthy subjects by ultrasonography with speckle tracking analyses. Repeated measures ANOVA was used to measure differences between the muscles and Kendall’s tau correlation was used to calculate the interplay between the muscles. Results: The semispinalis capitis muscle show the highest deformation in left rotation (F(1.23, 24.26)=6.90, p=0.01) compared to the multifidus (p=0.05) and trapezius (p=0.03) muscles. Interplay was seen between semispinalis capitis and the trapezius muscles in both left and right rotation, respectively (r=0.42 and r=0.34) regarding deformation. In deformation rate the semispinalis capitis muscle showed the highest degree of deformation in both left (F(1.43, 27.25)=9.05, p=<0.01) and right rotation (F(2, 38)=14.26, p=< 0.01). Interplay was seen between the semispinalis capitis and the trapezius muscle in right rotation (r=0.47) the multifidus muscles in both left (r=0.58) and right rotation (r=0.62). Conclusion: The ultra sound examination shows that the semispinalis capitis muscle is activated mainly but that it interacts with both the trapezius and the multifidus muscle. This result should be interpreted with care. More studies are needed to confirm if the deformations are active or passive.

Place, publisher, year, edition, pages
2018.
National Category
Physiotherapy
Identifiers
URN: urn:nbn:se:umu:diva-148359OAI: oai:DiVA.org:umu-148359DiVA, id: diva2:1213128
External cooperation
Linköpings universitet; Landstinget Sörmland
Educational program
Master's Programme in Physiotherapy
Supervisors
Examiners
Available from: 2019-02-13 Created: 2018-06-04 Last updated: 2019-02-13Bibliographically approved

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