Michael Peolsson

article

Altered patterns of displacement within the Achilles tendon following surgical repair

Åsa Fröberg, Ann-Sophie Cissé, Matilda Larsson, Mattias Mårtensson, more

Knee Surgery, Sports Traumatology, Arthroscopy > 2017 > 25 > 6 > 1857-1865

Purpose Ultrasound speckle tracking was used to compare tendon deformation patterns between uninjured and surgically repaired Achilles tendons at 14–27-month follow-up. The hypothesis was that the non-homogenous displacement pattern previously described in uninjured tendons, where displacement within deep layers of the tendons exceeds that of superficial layers, is altered following tendon rupture...

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Altered ventral neck muscle deformation for individuals with whiplash associated disorder compared to healthy controls – A case-control ultrasound study

Gunnel Peterson, Åsa Dedering, Erika Andersson, David Nilsson, more

Manual Therapy > 2015 > 20 > 2 > 319-327

Previous studies have shown altered neck muscle function in individuals with chronic whiplash associated disorder (WAD). However, we lack real-time investigations with non-invasive methods that can distinguish between the different ventral neck muscle layers. This study investigated deformations and deformation rates in the sternocleidomastoid (SCM), longus capitis (Lcap), and longus colli (Lco) muscles...

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Longitudinal Changes in Ventral and Dorsal Neck Muscle Layers During Loading Against Gravity in Healthy Volunteers Using Speckle Tracking

Anneli Peolsson, Michael Peolsson

Journal of Manipulative and Physiological Therapeutics > 2014 > 37 > 4 > 253-259

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.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...

article

Does posture of the cervical spine influence dorsal neck muscle activity when lifting?

Anneli Peolsson, Eivind Marstein, Timothy McNamara, Damien Nolan, more

Manual Therapy > 2014 > 19 > 1 > 32-36

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...

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Ultrasound imaging with speckle tracking of cervical muscle deformation and deformation rate: Isometric contraction of patients after anterior cervical decompression and fusion for cervical disc disease and controls

Anneli Peolsson, Tommy Löfstedt, Johan Trygg, Michael Peolsson

Manual Therapy > 2012 > 17 > 6 > 519-525

There is currently a lack of information regarding neck muscle activity during specific exercises. The purpose of the present study was to investigate deformation and deformation rate in different layers of dorsal and ventral neck muscles during isometric neck muscle contraction in individuals after anterior cervical decompression and fusion and in healthy controls. This study included 10 individuals...

article

Non-uniform displacement within the Achilles tendon during passive ankle joint motion

Anton Arndt, Ann-Sophie Bengtsson, Michael Peolsson, Alf Thorstensson, more

Knee Surgery, Sports Traumatology, Arthroscopy > 2012 > 20 > 9 > 1868-1874

Purpose An initial step in the understanding of Achilles tendon dynamics is to investigate the effects of passive motion, thereby minimising muscle activation and reducing internal joint forces. Internal tendon dynamics during passive ankle joint motion have direct implications for clinical rehabilitation protocols after Achilles tendon surgery. The aim of this study was to test the hypothesis that...

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A tissue velocity ultrasound imaging investigation of the dorsal neck muscles during resisted isometric extension

Anneli Peolsson, Lars-Åke Brodin, Michael Peolsson

Manual Therapy > 2010 > 15 > 6 > 567-573

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...

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Tissue motion pattern of ventral neck muscles investigated by tissue velocity ultrasonography imaging

Michael Peolsson, Lars-Åke Brodin, Anneli Peolsson

European Journal of Applied Physiology > 2010 > 109 > 5 > 899-908

We designed this experimental study to investigate tissue motions and thus infer the recruitment pattern of the ventral neck muscles [sternocleidomastoid (SCM), longus capitis (Lca), and longus colli (Lco)] at the C4–C5 level in healthy volunteers during isometric manual resistance of the head in flexion in a seated position. This exercise is used in the physiotherapeutic treatment of neck pain and...

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Wave intensity wall analysis: a novel noninvasive method to measure wave intensity

Matilda Larsson, Anna Bjällmark, Britta Lind, Rita Balzano, more

Heart and Vessels > 2009 > 24 > 5 > 357-365

Wave intensity analysis is a concept providing information about the interaction of the heart and the vascular system. Originally, the technique was invasive. Since then new noninvasive methods have been developed. A recently developed ultrasound technique to estimate tissue motion and deformation is speckle-tracking echocardiography. Speckle tracking-based techniques allow for accurate measurement...

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Biochemical alterations in the trapezius muscle of patients with chronic whiplash associated disorders (WAD) – A microdialysis study

Björn Gerdle, Dag Lemming, Jesper Kristiansen, Britt Larsson, more

European Journal of Pain > 2008 > 12 > 1 > 82-93

The mechanisms behind the development of chronic trapezius myalgia in patients with whiplash associated disorders (WAD) appear to involve both peripheral and central components, but the specific contribution of alterations in muscle is not clear. Female patients with WAD and involvement of trapezius (N=22) and female controls (N=20; CON) were studied during an experiment compromised of rest (baseline),...

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Predictive factors for long-term outcome of anterior cervical decompression and fusion: a multivariate data analysis

Anneli Peolsson, Michael Peolsson

European Spine Journal > 2008 > 17 > 3 > 406-414

We conducted a prospective randomized study to investigate predictive factors for short- and long-term outcome of anterior cervical decompression and fusion (ACDF) as measured by current pain intensity on the Visual Analogue Scale (VAS) and by disability using the Neck Disability Index (NDI). Current understanding about how preoperative and short-term outcome data predict long-term outcome is sparse,...

article

Increased levels of interstitial potassium but normal levels of muscle IL-6 and LDH in patients with trapezius myalgia

Lars Rosendal, Jesper Kristiansen, Björn Gerdle, Karen Søgaard, more

Pain > 2005 > 119 > 1-3 > 201-209

The mechanisms behind the development of work-related trapezius pain are suggested to involve both peripheral and central components, but the specific contribution of alterations in muscle nociceptive and other substances is not clear. Female patients with chronic trapezius myalgia (N=19; TM) and female controls (N=20; CON) were studied at rest, during 20min repetitive low-force exercise and recovery,...

article

Increase in muscle nociceptive substances and anaerobic metabolism in patients with trapezius myalgia: microdialysis in rest and during exercise

Lars Rosendal, Britt Larsson, Jesper Kristiansen, Michael Peolsson, more

Pain > 2004 > 112 > 3 > 324-334

Local metabolic changes are suggested to be involved in muscle pain development in humans. Nineteen women with chronic work-related trapezius myalgia (TM) and 20 healthy female controls (CON) were studied during baseline rest, 20min repetitive low-force exercise, and 120min recovery. Interstitial serotonin (5-HT), glutamate, lactate, pyruvate, and blood flow were determined by microdialysis in the...

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Search results for: Michael Peolsson

Altered patterns of displacement within the Achilles tendon following surgical repair

Altered ventral neck muscle deformation for individuals with whiplash associated disorder compared to healthy controls – A case-control ultrasound study

Longitudinal Changes in Ventral and Dorsal Neck Muscle Layers During Loading Against Gravity in Healthy Volunteers Using Speckle Tracking

Does posture of the cervical spine influence dorsal neck muscle activity when lifting?

Ultrasound imaging with speckle tracking of cervical muscle deformation and deformation rate: Isometric contraction of patients after anterior cervical decompression and fusion for cervical disc disease and controls

Non-uniform displacement within the Achilles tendon during passive ankle joint motion

A tissue velocity ultrasound imaging investigation of the dorsal neck muscles during resisted isometric extension

Tissue motion pattern of ventral neck muscles investigated by tissue velocity ultrasonography imaging

Wave intensity wall analysis: a novel noninvasive method to measure wave intensity

Biochemical alterations in the trapezius muscle of patients with chronic whiplash associated disorders (WAD) – A microdialysis study

Predictive factors for long-term outcome of anterior cervical decompression and fusion: a multivariate data analysis

Increased levels of interstitial potassium but normal levels of muscle IL-6 and LDH in patients with trapezius myalgia

Increase in muscle nociceptive substances and anaerobic metabolism in patients with trapezius myalgia: microdialysis in rest and during exercise

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