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Hilliges, Marita
Publications (10 of 19) Show all publications
Lundgren, L., Brorsson, S., Hilliges, M. & Osvalder, A.-L. (2011). Sport performance and perceived musculoskeletal stress, pain and discomfort in kitesurfing. International Journal of Performance Analysis in Sport, 11(1), 142-158
Open this publication in new window or tab >>Sport performance and perceived musculoskeletal stress, pain and discomfort in kitesurfing
2011 (English)In: International Journal of Performance Analysis in Sport, ISSN 1474-8185, E-ISSN 1474-8185, Vol. 11, no 1, p. 142-158Article in journal (Refereed) Published
Abstract [en]

The purpose of this study was to obtain an overview of the specific movement patterns in kitesurfing, and the participants' perceptions of musculoskeletal stress, pain and discomfort. Task analysis and survey studies were used to provide an overview of the sport, and to identify problematic issues associated with the performance of the tasks. Three different methods were complimentary used for data collection: observations (n=8), a web questionnaire (n=206) and interviews (n=17). Participants were contacted through kitesurfing events and online forums. Their ages ranged from 16-62 years. The results showed that participants experienced high musculoskeletal stress for short times during a session (jumps, tricks and strong winds), and lower, static musculoskeletal stress over a longer time (crossing). High stress was most frequently perceived in abdominal muscles. Knees and feet were the sites most frequently experienced as painful, followed by the shoulders and elbows. This study provides additional information on the performance of kitesurfing and perceived musculoskeletal stress, pain and discomfort. The results can be used as input data to develop training methods and equipment for safe and comfortable performance. © 2017, Routledge. All rights reserved.

Place, publisher, year, edition, pages
Abingdon: Taylor & Francis, 2011
Keywords
sport performance, movement pattern, survey
National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:hh:diva-15293 (URN)10.1080/24748668.2011.11868536 (DOI)000304195200014 ()2-s2.0-84859834328 (Scopus ID)
Projects
Brädsport & Biomekanik
Available from: 2011-06-08 Created: 2011-06-08 Last updated: 2018-07-06Bibliographically approved
Brorsson, S., Hilliges, M., Sollerman, C. & Nilsdotter, A. (2009). A six-week hand exercise programme improves strength and hand function in patients with rheumatoid arthritis. Journal of Rehabilitation Medicine, 41(5), 338-342
Open this publication in new window or tab >>A six-week hand exercise programme improves strength and hand function in patients with rheumatoid arthritis
2009 (English)In: Journal of Rehabilitation Medicine, ISSN 1650-1977, E-ISSN 1651-2081, Vol. 41, no 5, p. 338-342Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE:

To evaluate the effects of hand exercise in patients with rheumatoid arthritis, and to compare the results with healthy controls.

METHODS:

Forty women (20 patients with rheumatoid arthritis and 20 healthy controls) performed a hand exercise programme. The results were evaluated after 6 and 12 weeks with hand force measurements (with a finger extension force measurement device (EX-it) and finger flexion force measurement with Grippit). Hand function was evaluated with the Grip Ability Test (GAT) and with patient relevant questionnaires (Disability of the Arm, Shoulder, and Hand (DASH) and Short Form-36). Ultrasound measurements were performed on m. extensor digitorum communis for analysis of the muscle response to the exercise programme.

RESULTS:

The extension and flexion force improved in both groups after 6 weeks (p < 0.01). Hand function (GAT) also improved in both groups (p < 0.01). The rheumatoid arthritis group showed improvement in the results of the DASH questionnaire (p < 0.05). The cross-sectional area of the extensor digitorum communis increased significantly in both groups measured with ultrasound.

CONCLUSION:

A significant improvement in hand force and hand function in patients with rheumatoid arthritis was seen after 6 weeks of hand training; the improvement was even more pronounced after 12 weeks. Hand exercise is thus an effective intervention for rheumatoid arthritis patients, leading to better strength and function.

Place, publisher, year, edition, pages
Basingstoke: Taylor & Francis, 2009
Keywords
Hand exercise therapy, Rheumatoid arthritis, Extension force, Muscle architecture, Ultrasound, Hand strength, DASH, SF-36
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:hh:diva-2626 (URN)10.2340/16501977-0334 (DOI)000266097400007 ()19363566 (PubMedID)2-s2.0-64349122505 (Scopus ID)2082/3028 (Local ID)2082/3028 (Archive number)2082/3028 (OAI)
Available from: 2009-06-24 Created: 2009-06-24 Last updated: 2018-03-23Bibliographically approved
Bay, B., Hilliges, M., Weidner, C. & Sandborgh-Englund, G. (2009). Response of human oral mucosa and skin to histamine provocation: laser Doppler perfusion imaging discloses differences in the nociceptive nervous system. Acta Odontologica Scandinavica, 67(2), 99-105
Open this publication in new window or tab >>Response of human oral mucosa and skin to histamine provocation: laser Doppler perfusion imaging discloses differences in the nociceptive nervous system
2009 (English)In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850, Vol. 67, no 2, p. 99-105Article in journal (Refereed) Published
Abstract [en]

Objective. To investigate the existence of histamine-excitable nerve fibers in the oral mucosa and to compare the response to histamine provocation in healthy volunteers with that in a small group of patients with chronic oral pain. Material and methods. Thirteen healthy volunteers and six patients suffering from chronic oral pain took part in the study. Blood perfusion was monitored in the hard palate, the tongue, and the skin of the cheek using laser Doppler perfusion imaging (Perimed; Sweden). Baseline scannings were performed, followed by 15 scannings after iontophoresis of histamine (1%). A free description of the sensations was then obtained from the participants after finishing the measurements. Results. Compared to pre-histamine scanning, histamine application resulted in a considerable increase in blood perfusion in all regions (p0.001) that was significantly higher in skin than in oral mucosa (p0.001). There were no significant differences between the healthy volunteers and the patients regarding baseline blood flow, increased blood perfusion, or flare size after histamine provocation. The sensory impression was reported to be more persistent and intense in the skin than in the oral mucosa. No effect on mucosa could be detected by visual inspection. Conclusions. Intra-oral flare could be induced by activating histamine-excitable nerve fibers. Both duration and intensity of the flare were considerably less pronounced than in the control skin site. Histamine application was not clearly associated with itch.

Place, publisher, year, edition, pages
London: Taylor & Francis, 2009
Keywords
Axon reflex, histamine-excitable nerve fibers, laser-Doppler perfusion imaging, nociceptors, oral pain
National Category
Medical and Health Sciences Social Sciences
Identifiers
urn:nbn:se:hh:diva-18912 (URN)10.1080/00016350802698622 (DOI)000263366500006 ()19137455 (PubMedID)2-s2.0-60549083348 (Scopus ID)
Available from: 2012-06-26 Created: 2012-06-25 Last updated: 2018-03-22Bibliographically approved
Brorsson, S., Hilliges, M., Sollerman, C. & Nilsdotter, A. (2008). 6 weeks of hand exercise significantly improved the hand-strength and -function in Rheumatoid Arthritis patients. Paper presented at 22nd Scandinavian Hand Society Meeting in Helsinki, Finland, 3-5 September.
Open this publication in new window or tab >>6 weeks of hand exercise significantly improved the hand-strength and -function in Rheumatoid Arthritis patients
2008 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hh:diva-5979 (URN)
Conference
22nd Scandinavian Hand Society Meeting in Helsinki, Finland, 3-5 September
Available from: 2010-09-23 Created: 2010-09-23 Last updated: 2018-03-23Bibliographically approved
Brorsson, S., Nilsdotter, A., Sollerman, C., Baerveldt, A.-J. & Hilliges, M. (2008). A new force measurement device for evaluating finger extension function in the healthy and rheumatoid arthritis hand. Technology and Health Care, 16(4), 283-292
Open this publication in new window or tab >>A new force measurement device for evaluating finger extension function in the healthy and rheumatoid arthritis hand
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2008 (English)In: Technology and Health Care, ISSN 0928-7329, E-ISSN 1878-7401, Vol. 16, no 4, p. 283-292Article in journal (Refereed) Published
Abstract [en]

Although often neglected, finger extension force is of great importance for developing grip strength. This paper describes the design and evaluation of a new finger extension force measurement device (EX-it) based on the biomechanics of the hand. Measurement accuracy and test-retest reliability were analysed. The device allows measurements on single fingers as well as all the fingers (excluding the thumb) of both healthy and deformed hands. The coefficient of variation in the device was 1.8% of the applied load, and the test-retest reliability showed a coefficient of variation no more than 7.1% for healthy subjects. This study also provides reference values for finger extension force in healthy subjects and patients with rheumatoid arthritis (RA). Significant differences were found in extension strength between healthy subject and RA patients (men, p < 0.05 and women, p < 0.001). EX-it provides objective and reliable data on the extension force capacity of normal and dysfunctional hands and can be used to evaluate the outcome of therapeutic interventions after hand trauma or disease

Place, publisher, year, edition, pages
Amsterdam: IOS Press, 2008
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:hh:diva-5970 (URN)18776605 (PubMedID)2-s2.0-52449125684 (Scopus ID)
Available from: 2010-09-23 Created: 2010-09-23 Last updated: 2018-03-23Bibliographically approved
Johannesson, U., Sahlin, L., Masironi, B., Hilliges, M., Blomgren, B., Rylander, E. & Bohm-Starke, N. (2008). Steroid receptor expression and morphology in provoked vestibulodynia. American Journal of Obstetrics and Gynecology, 198(3), 311.e1-311.e6
Open this publication in new window or tab >>Steroid receptor expression and morphology in provoked vestibulodynia
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2008 (English)In: American Journal of Obstetrics and Gynecology, ISSN 0002-9378, E-ISSN 1097-6868, Vol. 198, no 3, p. 311.e1-311.e6Article in journal (Refereed) Published
Abstract [en]

Objective: This study was undertaken to survey the steroid receptor expression and morphology in the vulvar vestibular mucosa in women with provoked vestibulodynia.

Study Design: Fourteen patients and 25 controls without oral contraceptives were included. Vestibular biopsy specimens were obtained and analyzed by using immunohistochemistry, followed by computerized image analysis of estrogen receptors greek small letter alpha and β, progesterone receptors A and B, glucocorticoid receptor, androgen receptor, and the proliferation marker Ki67. The morphology was estimated by measuring 4 parameters in the epithelium.

Results: There was a significantly higher expression of estrogen receptor greek small letter alpha in both the epithelium (P = .04) and the stroma (P = .02) in the patient specimens compared with the controls. There were no significant differences in the other analyses performed.

Conclusion: There is an increased expression of estrogen receptor greek small letter alpha in the vestibular mucosa but the epithelial morphology seems unaffected in women with provoked vestibulodynia. Further studies regarding plausible associations to neurogenic inflammation are needed.

Place, publisher, year, edition, pages
St. Louis: C.V. Mosby, 2008
Keywords
Estrogen receptor, Morphology, Provoked vestibulodynia, Vulvar mucosa
National Category
Obstetrics, Gynecology and Reproductive Medicine
Identifiers
urn:nbn:se:hh:diva-1327 (URN)10.1016/j.ajog.2007.09.041 (DOI)000253730000027 ()18177837 (PubMedID)2-s2.0-39649088672 (Scopus ID)2082/1706 (Local ID)2082/1706 (Archive number)2082/1706 (OAI)
Available from: 2008-04-16 Created: 2008-04-16 Last updated: 2018-03-23Bibliographically approved
Brorsson, S., Nilsdotter, A., Hilliges, M., Sollerman, C. & Aurell, Y. (2008). Ultrasound evaluation in combination with finger extension force measurements of the forearm musculus extensor digitorum communis in healthy subjects. BMC Medical Imaging, 8, Article ID 6.
Open this publication in new window or tab >>Ultrasound evaluation in combination with finger extension force measurements of the forearm musculus extensor digitorum communis in healthy subjects
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2008 (English)In: BMC Medical Imaging, ISSN 1471-2342, E-ISSN 1471-2342, Vol. 8, article id 6Article in journal (Refereed) Published
Abstract [en]

Background:

The aim of this study was to evaluate the usefulness of an ultrasound-based method of examining extensor muscle architecture, especially the parameters important for force development. This paper presents the combination of two non-invasive methods for studying the extensor muscle architecture using ultrasound simultaneously with finger extension force measurements.

Methods:

M. extensor digitorum communis (EDC) was examined in 40 healthy subjects, 20 women and 20 men, aged 35-73 years. Ultrasound measurements were made in a relaxed position of the hand as well as in full contraction. Muscle cross-sectional area (CSA), pennation angle and contraction patterns were measured with ultrasound, and muscle volume and fascicle length were also estimated. Finger extension force was measured using a newly developed finger force measurement device.

Results:

The following muscle parameters were determined: CSA, circumference, thickness, pennation angles and changes in shape of the muscle CSA. The mean EDC volume in men was 28.3 cm3 and in women 16.6 cm3. The mean CSA was 2.54 cm2 for men and 1.84 cm2 for women. The mean pennation angle for men was 6.5° and for women 5.5°. The mean muscle thickness for men was 1.2 cm and for women 0.76 cm. The mean fascicle length for men was 7.3 cm and for women 5.0 cm. Significant differences were found between men and women regarding EDC volume (p < 0.001), CSA (p < 0.001), pennation angle (p < 0.05), muscle thickness (p < 0.001), fascicle length (p < 0.001) and finger force (p < 0.001). Changes in the shape of muscle architecture during contraction were more pronounced in men than women (p < 0.01). The mean finger extension force for men was 96.7 N and for women 39.6 N. Muscle parameters related to the extension force differed between men and women. For men the muscle volume and muscle CSA were related to extension force, while for women muscle thickness was related to the extension force.

Conclusion:

Ultrasound is a useful tool for studying muscle architectures in EDC. Muscle parameters of importance for force development were identified. Knowledge concerning the correlation between muscle dynamics and force is of importance for the development of new hand training programmes and rehabilitation after surgery.

© 2008 Brorsson et al; licensee BioMed Central Ltd.

Place, publisher, year, edition, pages
London: BioMed Central, 2008
Keywords
adult, aged, arm muscle, article, controlled study, echography, extensor muscle, female, finger, human, human experiment, male, muscle contraction, muscle force, muscle mass, muscle strength, non invasive procedure, normal human, postoperative care, rehabilitation care, thickness, forearm, histology, middle aged, nonparametric test, physiology, skeletal muscle
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:hh:diva-1941 (URN)10.1186/1471-2342-8-6 (DOI)18312699 (PubMedID)2-s2.0-41149116277 (Scopus ID)2082/2336 (Local ID)2082/2336 (Archive number)2082/2336 (OAI)
Available from: 2008-09-22 Created: 2008-09-22 Last updated: 2018-03-23Bibliographically approved
Lundgren, L., Olandersson, S., Hilliges, M. & Osvalder, A.-L. (2007). Biomechanics of extreme sports - a kite surfing scenario. In: Cecilia Berlin & Lars-Ola Bligård (Ed.), NES2007 Abstracts. Paper presented at NES2007, 39th Annual Congress of the Nordic Ergonomics Society, oct 1-3, 2007, Lingatan Conference Centre, Bohuslän, Sweden (pp. s.169). Nordic Ergonomics Society
Open this publication in new window or tab >>Biomechanics of extreme sports - a kite surfing scenario
2007 (English)In: NES2007 Abstracts / [ed] Cecilia Berlin & Lars-Ola Bligård, Nordic Ergonomics Society , 2007, p. s.169-Conference paper, Published paper (Refereed)
Abstract [en]

Do extreme sports contribute to higher biomechanical stress compared to other sports? Kite surfing is one of the upcoming popular extreme sports,where very few have studied the mechanical forces that act on the body. There are several factors that contribute to mechanical stress. For preventing injuries, it is of high interest to investigate how these forces affect the body and how the equipment can be further developed to prepare the athletes for making the sport as safe as possible. This project will study injury prevalence, motion analysis and mapping of forces and pressure during kite surfing. The outcome will be a better understanding of biomechanics of kite surfing and a construction for testing and training as well as ergonomic design ideas for the equipment.

Place, publisher, year, edition, pages
Nordic Ergonomics Society, 2007
Keywords
kite surfing, biomechanics, injuries, muscle strength, motion analysis, biomechanics, sports science
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hh:diva-1923 (URN)2082/2318 (Local ID)2082/2318 (Archive number)2082/2318 (OAI)
Conference
NES2007, 39th Annual Congress of the Nordic Ergonomics Society, oct 1-3, 2007, Lingatan Conference Centre, Bohuslän, Sweden
Available from: 2008-09-17 Created: 2008-09-17 Last updated: 2018-03-23Bibliographically approved
Namer, B., Hilliges, M., Ørstavik, K., Schmidt, R., Weidner, C., Torebjörk, E., . . . Schmelz, M. (2007). Endothelin1 activates and sensitizes human C-nociceptors. Pain, 137(1), 41-49
Open this publication in new window or tab >>Endothelin1 activates and sensitizes human C-nociceptors
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2007 (English)In: Pain, ISSN 0304-3959, E-ISSN 1872-6623, Vol. 137, no 1, p. 41-49Article in journal (Refereed) Published
Abstract [en]

Microneurography was used to record action potentials from afferent C-fibers in cutaneous fascicles of the peroneal nerve in healthy volunteers. Afferent fibers were classified according to their mechanical responsiveness to von Frey stimulation (75 g) into mechano-responsive and mechano-insensitive nociceptors. Various concentrations of Endothelin1 (ET1) and Histamine were injected into the receptive fields of C-fibers. Activation and heat sensitization were monitored. Axon reflex flare and psychophysical ratings were assessed after injection of ET1 and codeine into the forearms after pre-treatment with an H1 blocker or sodium chloride. 65% of mechanosensitive nociceptors were activated by ET1. One-third showed long lasting responses (>15 min). In contrast, none of thirteen mechano-insensitive fibers were activated. Sensitization to heat was observed in 62% of mechanosensitive and in 46% of mechano-insensitive fibers. Injection of ET1 produced a widespread axon reflex flare, which was suppressed by pre-treatment with an H1 receptor blocker. In addition, pain sensations were induced more often than itching by ET1 in contrast to codeine. No wheal was observed after injection of ET1. Both itching and pain were decreased after H1 blocker treatment. In summary: (1) In humans ET1 activates mechanosensitive, but not mechano-insensitive, nociceptors. (2) Histamine released from mast cells is not responsible for all effects of ET1 on C-nociceptors. (3) ET1 could have a differential role in pain compared to other chemical algogens which activate additionally or even predominantly mechano-insensitive fibers.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2007
Keywords
Endotheline 1, Microneurography, C-fiber, Axon reflex flare, Sensitization, Histamine
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:hh:diva-1357 (URN)10.1016/j.pain.2007.08.008 (DOI)000257631900008 ()17884295 (PubMedID)2-s2.0-44849137578 (Scopus ID)2082/1736 (Local ID)2082/1736 (Archive number)2082/1736 (OAI)
Available from: 2008-04-24 Created: 2008-04-24 Last updated: 2018-03-23Bibliographically approved
Johannesson, U., Blomgren, B., Hilliges, M., Rylander, E. & Bohm-Starke, N. (2007). The vulval vestibular mucosa - morphological effects of oral contraceptives and menstrual cycle. British Journal of Dermatology, 157(3), 487-493
Open this publication in new window or tab >>The vulval vestibular mucosa - morphological effects of oral contraceptives and menstrual cycle
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2007 (English)In: British Journal of Dermatology, ISSN 0007-0963, E-ISSN 1365-2133, Vol. 157, no 3, p. 487-493Article in journal (Refereed) Published
Abstract [en]

Background

An erythematous and hypersensitive vestibular mucosa has been observed during the use of combined oral contraceptives (COC). Hormonal effects on the vestibular morphology have not been studied.

Objectives

Our aim was to evaluate the morphology of the vulval vestibular mucosa during the influence of COC and during the menstrual cycle.

Methods

Forty-five healthy women (20 using COC and 25 not using COC) were included. A 6-mm punch biopsy was obtained from the right posterior vestibule on days 7-11 of the menstrual cycle. A corresponding biopsy was taken 2 weeks later in 16 women without COC. The epithelial morphology was estimated by measuring interdermal papilla distance, dermal papilla to surface, from basal layer to surface and width of dermal papillae. A histopathological assessment was made.

Results

The vulval vestibular mucosa of women using COC displayed a larger distance between the dermal papillae (P = 0·04) and a larger space from the dermal papillae to the epithelial surface (P = 0·03) compared with controls in the follicular phase. Women without COC displayed a larger interdermal papilla distance in the luteal phase compared with the follicular phase, P = 0·02. Histopathology showed more superficial blood vessels in the COC users (P < 0·01).

Conclusions

The vulval vestibular mucosa of women with COC display an altered morphological pattern with shallow and sparse dermal papillae compared with the follicular phase. Similar findings are seen in women without COC during the luteal phase which indicate a gestagenic effect on the mucosa. Associations between the morphological pattern and changes in mucosal mechanical sensitivity require further studies.

Place, publisher, year, edition, pages
Oxford: Blackwell Publishing, 2007
Keywords
Dermal papillae, Menstrual cycle, Morphology, Oral contraceptives, Vulval mucosa
National Category
Dermatology and Venereal Diseases
Identifiers
urn:nbn:se:hh:diva-1319 (URN)10.1111/j.1365-2133.2007.08066.x (DOI)000248926500008 ()17627793 (PubMedID)2-s2.0-34547872738 (Scopus ID)2082/1698 (Local ID)2082/1698 (Archive number)2082/1698 (OAI)
Available from: 2008-04-15 Created: 2008-04-15 Last updated: 2018-03-23Bibliographically approved
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