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1.
  • Peolsson, Anneli, et al. (författare)
  • A tissue velocity ultrasound imaging investigation of the dorsal neck muscles during resisted isometric extension
  • 2010
  • Ingår i: MANUAL THERAPY. - Elsevier Science B.V., Amsterdam. - 1356-689X. ; 15:6, s. 567-573
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Persons with neck pain exhibit altered patterns of muscle patterning, but limited investigations have been carried out on these alterations or muscle patterning in healthy volunteers. This study investigated the tissue motion of the dorsal neck muscles at the C4 segmental level in 15 healthy subjects during manually resisted head extension. Doppler-based tissue velocity ultrasound imaging (TVI) was used to detect regional tissue deformation, providing indirect evidence of inter-muscular movement patterning. The deep muscles, multifidus and semispinalis, had different muscular movement patterning than the superficial muscles, especially the trapezius muscle. The semispinalis cervicis (SSCerv) was the first deformed upon exercise initiation, followed by multifidus and semispinalis capitis (SSCap). The semispinalis muscles, notably capitis, exhibited a high rate of deformation during the exercise. The trapezius muscle exhibited the least and lowest deformation rate. In conclusion, TVI provided detailed information on regional tissue activity and muscle movement patterning among the dorsal neck muscles. In future studies, data from patients with neck disorders will have to be matched to data from healthy volunteers in a variety of situations and activities.</p>
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2.
  • Peolsson, Anneli, et al. (författare)
  • A tissue velocity ultrasound imaging investigation of the dorsal neck muscles during resisted isometric extension
  • 2010
  • Ingår i: Manual Therapy. - 1356-689X .- 1532-2769. ; 15:6, s. 567-573
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Persons with neck pain exhibit altered patterns of muscle patterning, but limited investigations have been carried out on these alterations or muscle patterning in healthy volunteers. This study investigated the tissue motion of the dorsal neck muscles at the C4 segmental level in 15 healthy subjects during manually resisted head extension. Doppler-based tissue velocity ultrasound imaging (TVI) was used to detect regional tissue deformation, providing indirect evidence of inter-muscular movement patterning. The deep muscles, multifidus and semispinalis, had different muscular movement patterning than the superficial muscles, especially the trapezius muscle. The semispinalis cervicis (SSCerv) was the first deformed upon exercise initiation, followed by multifidus and semispinalis capitis (SSCap). The semispinalis muscles, notably capitis, exhibited a high rate of deformation during the exercise. The trapezius muscle exhibited the least and lowest deformation rate. In conclusion, TVI provided detailed information on regional tissue activity and muscle movement patterning among the dorsal neck muscles. In future studies, data from patients with neck disorders will have to be matched to data from healthy volunteers in a variety of situations and activities.</p>
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3.
  • Peolsson, Anneli, et al. (författare)
  • Cervical Muscle Activity During Loaded Arm Lifts in Patients 10 Years Postsurgery for Cervical Disc Disease
  • 2013
  • Ingår i: Journal of Manipulative and Physiological Therapeutics. - Elsevier. - 0161-4754 .- 1532-6586. ; 36:5, s. 292-299
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Objective</p><p>The purpose of this study was to compare the mechanical activity of the neck muscles during loaded arm lifting tasks in individuals with long-standing disability after anterior cervical decompression and fusion (ACDF) with that of healthy controls.</p><p>Methods</p><p>Ten individuals (mean age, 60 years; SD, 7.1) who underwent ACDF (10-13 years previously) for cervical disc disease and 10 healthy age- and sex-matched controls participated in the study. Ultrasonography was used to investigate the degree of deformation and deformation rate of ventral and dorsal neck muscles at the C4 segmental level during a single (1 × arm flexion to 120°) and repeated (10 × arm flexion to 90°) loaded arm elevation condition.</p><p>Results</p><p>The ACDF group showed greater deformation and deformation rate of the longus capitis (<em>P</em> = .02) and deformation rate of the sternocleidomastoid (<em>P</em> = .04) during the 120° arm lift. For repeated 90° arm lift, there was a significant group effect with higher deformation rate values observed in the longus capitis (<em>P</em> = .005-.01) and multifidus (<em>P</em> = .03) muscles in the ACDF group. Muscle behavior did not change the repeated arm lifts (no group × time interactions) for either the ventral or the dorsal muscles.</p><p>Conclusions</p><p>For study participants, greater muscle mechanical activity levels were observed in the ventral and multifidus muscles of patients with persistent symptoms after ACDF. These differences may indicate altered motor strategy in this patient group when performing the upper limb task and may need to be considered when prescribing exercise for postsurgical rehabilitation.</p>
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4.
  • Peolsson, Anneli, et al. (författare)
  • Does posture of the cervical spine influence dorsal neck muscle activity when lifting?
  • 2014
  • Ingår i: Manual Therapy. - Elsevier. - 1356-689X .- 1532-2769. ; 19:1, s. 32-36
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Previous studies have shown that postural orientations of the neck, such as flexed or forward head postures, are associated with heightened activity of the dorsal neck muscles. While these studies describe the impact of variations in neck posture alone, there is scant literature regarding the effect of neck posture on muscle activity when combined with upper limb activities such as lifting. The purpose of this study was to evaluate the effect of three different neck postures on the activity of the different layers of the dorsal neck muscles during a lifting task. Ultrasound measurements of dorsal neck muscle deformation were compared over two time points (rest, during lift) during a lifting task performed in three different neck postural conditions (neutral, flexed and forward head posture) in 21 healthy subjects. Data were analysed by post-process speckle tracking analysis. Results demonstrated significantly greater muscle deformation induced by flexed and forward head postures, compared to the neutral posture, for all dorsal neck muscles at rest (p &lt; 0.05). Significant condition by time interactions associated with the lift was observed for four out of the five dorsal muscles (p &lt; 0.02). These findings demonstrate that posture of the cervical spine influenced the level of muscle deformation not only at rest, but also when lifting. The findings of the study suggest that neck posture should be considered during the evaluation or design of lifting activities as it may contribute to excessive demands on dorsal neck muscles with potential detrimental consequences. (C) 2013 Elsevier Ltd. All rights reserved.</p>
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5.
  • Peolsson, Anneli, et al. (författare)
  • Does posture of the cervical spine influence dorsal neck muscle activity when lifting?
  • 2014
  • Ingår i: Manual Therapy. - Elsevier. - 1356-689X .- 1532-2769. ; 19:1, s. 32-36
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Previous studies have shown that postural orientations of the neck, such as flexed or forward head postures, are associated with heightened activity of the dorsal neck muscles. While these studies describe the impact of variations in neck posture alone, there is scant literature regarding the effect of neck posture on muscle activity when combined with upper limb activities such as lifting. The purpose of this study was to evaluate the effect of three different neck postures on the activity of the different layers of the dorsal neck muscles during a lifting task. Ultrasound measurements of dorsal neck muscle deformation were compared over two time points (rest, during lift) during a lifting task performed in three different neck postural conditions (neutral, flexed and forward head posture) in 21 healthy subjects. Data were analysed by post-process speckle tracking analysis. Results demonstrated significantly greater muscle deformation induced by flexed and forward head postures, compared to the neutral posture, for all dorsal neck muscles at rest (pless than. 0.05). Significant condition by time interactions associated with the lift was observed for four out of the five dorsal muscles (pless than. 0.02). These findings demonstrate that posture of the cervical spine influenced the level of muscle deformation not only at rest, but also when lifting. The findings of the study suggest that neck posture should be considered during the evaluation or design of lifting activities as it may contribute to excessive demands on dorsal neck muscles with potential detrimental consequences.</p>
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6.
  • Peolsson, Anneli, et al. (författare)
  • Is there a difference in the pattern of muscle activity when performing neck exercises with a guild board versus a pulley?
  • 2013
  • Ingår i: Journal of Rehabilitation Medicine. - Stiftelsen Rehabiliteringsinformation. - 1650-1977 .- 1651-2081. ; 45:9, s. 900-905
  • Tidskriftsartikel (refereegranskat)abstract
    • <p><strong>Objective</strong>: Guild boards and pulleys are apparatus commonly used to train cervical muscle function for their purported benefit in facilitating activity of the deeper muscle layers, although this effect has not been substantiated. The objective of this study was to compare the activity of the different layers of cervical muscles when performing exercise with these 2 types of apparatus.</p><p><strong>Subjects</strong>: A total of 19 healthy persons (mean age 28 years, (standard deviation 7 years).</p><p><strong>Design</strong>: Ultrasound measurements of muscle deformation and deformation rate were recorded from the dorsal and ventral neck muscle layers during extension and flexion exercises. Pulley exercises were performed in the upright sitting position against a standardized resistance (men 2 kg, women 1 kg) and guild board exercises at an angle of 45 degrees.</p><p><strong>Results</strong>: The dorsal muscles generally showed greater levels of deformation and deformation rate during exercise with the guild board compared with the pulley system (p&lt;0.05), but with no significant differences in relative activity between the deep and superficial muscle layers (condition x muscle interaction (p&gt;0.05)). No differences were observed for the ventral muscles between exercise methods (p&gt;0.05).</p><p><strong>Conclusion</strong>: While both exercise methods appear to train cervical muscle function, neither appear to be more selective in facilitating deep cervical muscle activity, probably as they involve very similar cervical kinematics.</p>
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7.
  • Peolsson, Anneli, et al. (författare)
  • Is there a difference in the pattern of muscle activity when performing neck exercises with a guild board versus a pulley?
  • 2013
  • Ingår i: Journal of Rehabilitation Medicine. - 1650-1977 .- 1651-2081. ; 45:9, s. 900-905
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Objective: Guild boards and pulleys are apparatus commonly used to train cervical muscle function for their purported benefit in facilitating activity of the deeper muscle layers, although this effect has not been substantiated. The objective of this study was to compare the activity of the different layers of cervical muscles when performing exercise with these 2 types of apparatus. Subjects: A total of 19 healthy persons (mean age 28 years, (standard deviation 7 years). Design: Ultrasound measurements of muscle deformation and deformation rate were recorded from the dorsal and ventral neck muscle layers during extension and flexion exercises. Pulley exercises were performed in the upright sitting position against a standardized resistance (men 2 kg, women 1 kg) and guild board exercises at an angle of 45 degrees. Results: The dorsal muscles generally showed greater levels of deformation and deformation rate during exercise with the guild board compared with the pulley system (p&lt;0.05), but with no significant differences in relative activity between the deep and superficial muscle layers (condition x muscle interaction (p&gt;0.05)). No differences were observed for the ventral muscles between exercise methods (p&gt;0.05). Conclusion: While both exercise methods appear to train cervical muscle function, neither appear to be more selective in facilitating deep cervical muscle activity, probably as they involve very similar cervical kinematics.</p>
  •  
8.
  • Peolsson, Anneli L. C., et al. (författare)
  • Cervical muscle activity during loaded arm lifts in patients 10 years postsurgery for cervical disc disease
  • 2013
  • Ingår i: Journal of Manipulative and Physiological Therapeutics. - 0161-4754 .- 1532-6586. ; 36:5, s. 292-299
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Objective: The purpose of this study was to compare the mechanical activity of the neck muscles during loaded arm lifting tasks in individuals with long-standing disability after anterior cervical decompression and fusion (ACDF) with that of healthy controls. Methods: Ten individuals (mean age, 60 years; SD, 7.1) who underwent ACDF (10-13 years previously) for cervical disc disease and 10 healthy age-and sex-matched controls participated in the study. Ultrasonography was used to investigate the degree of deformation and deformation rate of ventral and dorsal neck muscles at the C4 segmental level during a single (1x arm flexion to 120) and repeated (10x arm flexion to 90) loaded arm elevation condition. Results: The ACDF group showed greater deformation and deformation rate of the longus capitis (P = .02) and deformation rate of the sternocleidomastoid (P = .04) during the 120 degrees arm lift. For repeated 90 degrees arm lift, there was a significant group effect with higher deformation rate values observed in the longus capitis (P = .005-.01) and multifidus (P = .03) muscles in the ACDF group. Muscle behavior did not change the repeated arm lifts (no group x time interactions) for either the ventral or the dorsal muscles. Conclusions: For study participants, greater muscle mechanical activity levels were observed in the ventral and multifidus muscles of patients with persistent symptoms after ACDF. These differences may indicate altered motor strategy in this patient group when performing the upper limb task and may need to be considered when prescribing exercise for postsurgical rehabilitation.</p>
  •  
9.
  • Peolsson, Anneli, et al. (författare)
  • Longitudinal changes in ventral and dorsal neck muscle layers during loading against gravity in healthy volunteers using speckle tracking
  • 2014
  • Ingår i: Journal of Manipulative and Physiological Therapeutics. - 0161-4754 .- 1532-6586. ; 37:4, s. 253-259
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Objective: This study aimed to describe and compare the longitudinal mechanical activity, deformation, and deformation rate of the different layers of dorsal and ventral neck muscles in healthy volunteers during head lifts against gravity. Methods: The cross-sectional study included 19 healthy volunteers (mean age, 28 years; SD, 7 years). Ultrasound with speckle-tracking analysis was used to investigate longitudinal mechanical activation, deformation, and deformation rate of dorsal and ventral neck muscles in real time during a head lift. Significance levels were set as P = .025 or P = .0125, depending on the number of comparisons. Results: The dorsal neck muscles did not significantly differ in deformation (P &gt; .04); however, the multifidus had a higher deformation rate than all other dorsal muscles (P &lt; .003). The sternocleidomastoid had significantly higher deformation than the longus capitis (P = .005) and colli (P = .001) but a lower deformation rate than the longus colli (P = .02). Conclusion: The sternocleidomastoid deformed more than the deeper muscles, but it did significantly slower than the longus colli. Among the dorsal muscles, the deepest (the multifidus) had the highest deformation rate.</p>
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10.
  • Peolsson, Anneli, et al. (författare)
  • Longitudinal changes in ventral and dorsal neck muscle layers during loading against gravity in healthy volunteers using speckle tracking
  • 2014
  • Ingår i: Journal of Manipulative and Physiological Therapeutics. - Elsevier. - 0161-4754 .- 1532-6586. ; 37:4, s. 253-259
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>OBJECTIVE:</p><p>This study aimed to describe and compare the longitudinal mechanical activity, deformation, and deformation rate of the different layers of dorsal and ventral neck muscles in healthy volunteers during head lifts against gravity.</p><p>METHODS:</p><p>The cross-sectional study included 19 healthy volunteers (mean age, 28 years; SD, 7 years). Ultrasound with speckle-tracking analysis was used to investigate longitudinal mechanical activation, deformation, and deformation rate of dorsal and ventral neck muscles in real time during a head lift. Significance levels were set as P = .025 or P = .0125, depending on the number of comparisons.</p><p>RESULTS:</p><p>The dorsal neck muscles did not significantly differ in deformation (P &gt; .04); however, the multifidus had a higher deformation rate than all other dorsal muscles (P &lt; .003). The sternocleidomastoid had significantly higher deformation than the longus capitis (P = .005) and colli (P = .001) but a lower deformation rate than the longus colli (P = .02).</p><p>CONCLUSION:</p><p>The sternocleidomastoid deformed more than the deeper muscles, but it did significantly slower than the longus colli. Among the dorsal muscles, the deepest (the multifidus) had the highest deformation rate.</p>
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