| 1. |
- Aghanavesi, Somayeh, 1981-, et al.
(författare)
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Feasibility of Using Dynamic Time Warping to Measure Motor States in Parkinson’s Disease
- 2020
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Ingår i: Journal of Sensors. - London : Hindawi Publishing Corporation. - 1687-725X .- 1687-7268. ; , s. 1-14
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this paper is to investigate the feasibility of using the Dynamic Time Warping (DTW) method to measure motor states in advanced Parkinson's disease (PD). Data were collected from 19 PD patients who experimented leg agility motor tests with motion sensors on their ankles once before and multiple times after an administration of 150% of their normal daily dose of medication. Experiments of 22 healthy controls were included. Three movement disorder specialists rated the motor states of the patients according to Treatment Response Scale (TRS) using recorded videos of the experiments. A DTW-based motor state distance score (DDS) was constructed using the acceleration and gyroscope signals collected during leg agility motor tests. Mean DDS showed similar trends to mean TRS scores across the test occasions. Mean DDS was able to differentiate between PD patients at Off and On motor states. DDS was able to classify the motor state changes with good accuracy (82%). The PD patients who showed more response to medication were selected using the TRS scale, and the most related DTW-based features to their TRS scores were investigated. There were individual DTW-based features identified for each patient. In conclusion, the DTW method can provide information about motor states of advanced PD patients which can be used in the development of methods for automatic motor scoring of PD. © 2020 Somayeh Aghanavesi et al.
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| 2. |
- Ahlstrand, Roland, 1956-
(författare)
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Social responsibility in connection with business closures : A study of closures of Ericsson Telecom facilities in Norrköping and Linköping
- 2010
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Ingår i: Economic and Industrial Democracy. - London : Sage Publications. - 0143-831X .- 1461-7099. ; 31:4, s. 537-555
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Tidskriftsartikel (refereegranskat)abstract
- The present article analyses why and how Ericsson Telecom assumeda greater responsibility than was legally required when it dismissedmore than 23,000 employees in Sweden at the beginning of the21st century. The analysis starts from neoinstitutional theoryand is based on case studies of the company’s closuresin Norrköping and Linköping. The article focuses,in particular, on the interaction between Ericsson, the tradeunions, the County Administrative Board, the County Labour Board,the Public Employment Service, the Swedish Employment SecurityCouncil, the government and the respective municipalities. Itis shown that the greater responsibility taken by Ericsson wasbased on its desire to maintain legitimacy by taking into considerationprevailing societal expectations regarding the company’sbehaviour.
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| 3. |
- Albinsson, John, et al.
(författare)
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Improved tracking performance of lagrangian block-matching methodologies using block expansion in the time domain : In silico, phantom and invivo evaluations
- 2014
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Ingår i: Ultrasound in Medicine and Biology. - : Elsevier. - 0301-5629 .- 1879-291X. ; 40:10, s. 2508-2520
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to evaluate tracking performance when an extra reference block is added to a basic block-matching method, where the two reference blocks originate from two consecutive ultrasound frames. The use of an extra reference block was evaluated for two putative benefits: (i) an increase in tracking performance while maintaining the size of the reference blocks, evaluated using in silico and phantom cine loops; (ii) a reduction in the size of the reference blocks while maintaining the tracking performance, evaluated using in vivo cine loops of the common carotid artery where the longitudinal movement of the wall was estimated. The results indicated that tracking accuracy improved (mean - 48%, p<0.005 [in silico]; mean - 43%, p<0.01 [phantom]), and there was a reduction in size of the reference blocks while maintaining tracking performance (mean - 19%, p<0.01 [in vivo]). This novel method will facilitate further exploration of the longitudinal movement of the arterial wall. (C) 2014 World Federation for Ultrasound in Medicine & Biology.
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| 4. |
- Alfonsson, Johan, 1985-
(författare)
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Arv, miljö eller både och? : En kritisk realistisk kritik av heritabilitetsmetodiken
- 2022
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Ingår i: Sociologisk forskning. - Huddinge : Sveriges Sociologförbund. - 0038-0342 .- 2002-066X. ; 59:1-2, s. 127-148
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Tidskriftsartikel (refereegranskat)abstract
- Heredity, environment, or both? A critical realistic critique of the heritability methodologyWith heritability methodology researchers using twin studies, and during recent year also DNA studies, have claimed that heredity plays a crucial role in explaining social outcomes. Explaining what causes social outcomes is a strive to explain how reality is constituted, and is thus an ontological question. The purpose of this article is to examine the unspoken ontological assumptions in heritability studies from a critical realistic perspective. First I’ll explain the basics of the heritability methodology, the twin methodology and DNA studies that measure heritability, then I’ll describe the previous criticism of these studies. Thereafter I’ll argue that the heritability studies do not examine the actual causes of social events, but rather that the measures are driven by other underlying mechanisms, which thus are the ones possessing the generative power to influence social outcomes. Against this background, I argue that the studies commit the fallacy of misplaced concreteness and the epistemic fallacy. In conclusion, I argue that concrete social phenomena should be understood as an interplay between different generative mechanisms.
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| 5. |
- Andersson, Janicke, 1975-
(författare)
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Att förhålla sig till ändligheten i livet och strategier för ”framgångsrikt döende”
- 2020
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Ingår i: Sociologisk forskning. - Huddinge : Sveriges Sociologförbund. - 0038-0342 .- 2002-066X. ; 57:3-4, s. 271-287
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Tidskriftsartikel (refereegranskat)abstract
- Successful dying. Later life strategies to cope with the finiteness of life.This article aims to explore how older people relate to the finiteness of life. Unlike many other similar studies, this study focuses on older people outside palliative care and residential care, those who are still active and engaged in society. When, and in what ways do finiteness of life become apparent to them in their everyday lives? What strategies do they use to manage awareness of the finiteness of life? In 2015, data was collected via six focus group occasions with people aged 69–90. The result show that finiteness of life was something that all respondents were occupied with almost daily and in several ways. In most cases with ambiguity and even fear for the uncertainty of the future, but also with a feeling that the awareness of finitude made the present more valuable. Death was manifested in the respondents’ everyday lives, as something to be postponed, planned and administered by the types of self-disciplining techniques that are significant for successful ageing. I therefore conclude that these norms and techniques of successful ageing have expand into the field of ways of practice dying and thereby, become norms and techniques of successful dying.
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| 6. |
- Brorsson, Sofia, 1973-, et al.
(författare)
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A six-week hand exercise programme improves strength and hand function in patients with rheumatoid arthritis
- 2009
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Ingår i: Journal of Rehabilitation Medicine. - Basingstoke : Taylor & Francis. - 1650-1977 .- 1651-2081. ; 41:5, s. 338-342
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 7. |
- Brorsson, Sofia, 1973-, et al.
(författare)
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Differences in muscle activity during hand-dexterity tasks between women with arthritis and a healthy reference group
- 2014
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Ingår i: BMC Musculoskeletal Disorders. - London, England : Springer Science and Business Media LLC. - 1471-2474. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Background: Impaired hand function is common in patients with arthritis and it affects performance of daily activities; thus, hand exercises are recommended. There is little information on the extent to which the disease affects activation of the flexor and extensor muscles during these hand-dexterity tasks. The purpose of this study was to compare muscle activation during such tasks in subjects with arthritis and in a healthy reference group. Methods: Muscle activation was measured in m. extensor digitorium communis (EDC) and in m. flexor carpi radialis (FCR) with surface electromyography (EMG) in women with rheumatoid arthritis (RA, n = 20), hand osteoarthritis (HOA, n = 16) and in a healthy reference group (n = 20) during the performance of four daily activity tasks and four hand exercises. Maximal voluntary isometric contraction (MVIC) was measured to enable intermuscular comparisons, and muscle activation is presented as %MVIC. Results: The arthritis group used a higher %MVIC than the reference group in both FCR and EDC when cutting with a pair of scissors, pulling up a zipper and-for the EDC-also when writing with a pen and using a key (p < 0.02). The exercise "rolling dough with flat hands" required the lowest %MVIC and may be less effective in improving muscle strength. Conclusions: Women with arthritis tend to use higher levels of muscle activation in daily tasks than healthy women, and wrist extensors and flexors appear to be equally affected. It is important that hand training programs reflect real-life situations and focus also on extensor strength.
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| 8. |
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| 9. |
- Brorsson, Sofia, 1973-, et al.
(författare)
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Relationship between finger flexion and extension force in healthy women and women with rheumatoid arthritis
- 2012
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Ingår i: Journal of Rehabilitation Medicine. - Uppsala, Sweden : Stiftelsen Rehabiliteringsinformation. - 1650-1977 .- 1651-2081. ; 44:7, s. 605-608
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: Balance between flexor and extensor muscle activity is essential for optimal function. The purpose of this pilot study was to compare the relationship between maximum finger flexion force and maximum finger extension force in women with rheumatoid arthritis and healthy women.METHODS: Twenty healthy women (median age 61 years) and 20 women with rheumatoid arthritis (median age 59.5 years, median disease duration 16.5 years) were included in the study. Finger extension force was measured with an electronic device, EX-it, and finger flexion force using Grippit. The Grip Ability Test and the score from the patient-reported outcome Disability Arm Shoulder and Hand were used to evaluate activity limitations.RESULTS: Patients with rheumatoid arthritis showed significantly decreased hand function compared with healthy controls. A correlation was found between extension force and flexion force in the healthy group (r = 0.65, p = 0.002),but not in the rheumatoid arthritis group (r = 0.25, p = 0.289).CONCLUSION: Impaired hand function appears to influence the relationship between maximum finger flexion and extension force. This study showed a difference in the relationship between maximum finger flexion and extension force in healthy controls and those with rheumatoid arthritis. © 2012 Foundation of Rehabilitation Information.
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