| 1. |
- Khan, Taha, 1983-, et al.
(author)
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A Novel Method for Classification of Running Fatigue Using Change-Point Segmentation
- 2019
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In: Sensors. - Basel : MDPI. - 1424-8220. ; 19:21
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Journal article (peer-reviewed)abstract
- Blood lactate accumulation is a crucial fatigue indicator during sports training. Previous studies have predicted cycling fatigue using surface-electromyography (sEMG) to non-invasively estimate lactate concentration in blood. This study used sEMG to predict muscle fatigue while running and proposes a novel method for the automatic classification of running fatigue based on sEMG. Data were acquired from 12 runners during an incremental treadmill running-test using sEMG sensors placed on the vastus-lateralis, vastus-medialis, biceps-femoris, semitendinosus, and gastrocnemius muscles of the right and left legs. Blood lactate samples of each runner were collected every two minutes during the test. A change-point segmentation algorithm labeled each sample with a class of fatigue level as (1) aerobic, (2) anaerobic, or (3) recovery. Three separate random forest models were trained to classify fatigue using 36 frequency, 51 time-domain, and 36 time-event sEMG features. The models were optimized using a forward sequential feature elimination algorithm. Results showed that the random forest trained using distributive power frequency of the sEMG signal of the vastus-lateralis muscle alone could classify fatigue with high accuracy. Importantly for this feature, group-mean ranks were significantly different (p < 0.01) between fatigue classes. Findings support using this model for monitoring fatigue levels during running. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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| 2. |
- Lindqvist, Pelle G., et al.
(author)
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The relationship between sun exposure and all-cause mortality
- 2017
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In: Photochemical and Photobiological Sciences. - 1474-905X. ; 16:3, s. 354-361
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Journal article (peer-reviewed)abstract
- We aimed to conduct a narrative review of the rapid advances in knowledge regarding sun exposure and all-cause mortality. Data support the hypothesis that sun exposure avoidance is a major risk factor for all-cause mortality in adjusted analysis (age, income, education, marital status, smoking, and comorbidity). This was caused by an increased risk of death due to cardiovascular disease (CVD) and noncancer/non-CVD. However, the increased life span among those with high sun exposure naturally results in an increased prevalence of cancer death. In addition, sun exposure increases the incidence, but is related to better prognosis of skin cancer. The new findings indicate that there is a need for modification of guidelines regarding sun exposure. They may also add to our knowledge regarding the increasing incidence of diabetes mellitus and increased mortality among non-Caucasians in western countries. According to the present knowledge, in a low solar intensity region we should aim for sound and safe sun exposure habits, especially for those at increased risk of CVD or noncancer/non-CVD.
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| 3. |
- Mattsson, Ken, et al.
(author)
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An improved projection method
- 2018
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In: Journal of Computational Physics. - : Elsevier BV. - 0021-9991 .- 1090-2716. ; 372, s. 349-372
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Journal article (peer-reviewed)
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| 4. |
- Thorslund, Tove, 1979-
(author)
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Do You Have a TV? : Negotiating Swedish Public Service through 1950's Programming, "Americanization," and Domesticity
- 2018
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Doctoral thesis (other academic/artistic)abstract
- This dissertation presents a cultural history of early Swedish television. The focus is on the investigation of 1950s programming, intermedial connections, processes of “Americanization,” and domestic, socio-cultural change in direct relation to the new medium. By using a wide range of sources—archival materials, official records, newspaper articles, advertisements, and more—the dissertation examines discourses on how television was experienced during its installation years in Swedish homes, as well as how U.S. television contents were perceived and came to be a sizeable part of early Swedish television. This thesis thereby endeavors to contribute to a wider, transnational framing of Swedish television history. The first chapter examines the scheduling practices and ideas of television programming in the 1950s. The engagement is with notions of medium specificity and intermedial connections between television, radio and film. The chapter further provides a background to how principles for programming were discussed before the televisual start and during the medium’s first years of operation in Sweden. The second chapter offers a case study of television program schedules between 1956 and 1959. It addresses the kind of programs, or categories, the Swedish Broadcasting Corporation invested in; patterns in the daily, weekly and seasonal schedule; increase in broadcasting hours; and prominent countries within the international television material. The case study primarily displays a hitherto largely overlooked influence that came from the U.S. and its commercial television program model.The third chapter discusses various forms of American influences on early Swedish television. A recurring cause of concern in Swedish media in the 1950s was that the Swedish public service television could be, and at times was, associated with “Americanization” and commercial popular culture at large. However, instead of defining Swedish public service television in contrast to the U.S. commercial television model, this dissertation argues that the formative years of Swedish television, in various ways, was a convergence of the British public service model and of U.S. program techniques, ideas and formats. Lastly, the forth chapter deals with the cultural changes that resulted from television’s incursion into private homes and living rooms. The chapter examines the television set as a new furniture, within a broader framework of the “people’s home” and the functionalistic ideals of the 1950s. It further addresses how the new medium was marketed to the public, and states that the excitement for television segued to a variety of product advertisements that used the new media as a promoter for an array of commodities.The study concludes that programs, formats, and ideas from the U.S., and not—as one might have thought—the UK, constituted the largest number of imported materials on Swedish television during the 1950s. Swedish public service television thus made use of transnational flows from U.S. commercial television networks right from the start, while simultaneously discursively distancing itself from this model of television. Furthermore, the dissertation shows that these programs and formats were pivotal for rapidly turning television into a popular media of entertainment, and a soon-to-be-natural part of the Swedish domestic setting in the 1950s.
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| 5. |
- Wibroe, Morten, et al.
(author)
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Cerebellar mutism syndrome in children with brain tumours of the posterior fossa
- 2017
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In: BMC Cancer. - : BIOMED CENTRAL LTD. - 1471-2407. ; 17
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Journal article (peer-reviewed)abstract
- Background: Central nervous system tumours constitute 25% of all childhood cancers; more than half are located in the posterior fossa and surgery is usually part of therapy. One of the most disabling late effects of posterior fossa tumour surgery is the cerebellar mutism syndrome (CMS) which has been reported in up to 39% of the patients but the exact incidence is uncertain since milder cases may be unrecognized. Recovery is usually incomplete. Reported risk factors are tumour type, midline location and brainstem involvement, but the exact aetiology, surgical and other risk factors, the clinical course and strategies for prevention and treatment are yet to be determined.Methods: This observational, prospective, multicentre study will include 500 children with posterior fossa tumours. It opened late 2014 with participation from 20 Nordic and Baltic centres. From 2016, five British centres and four Dutch centres will join with a total annual accrual of 130 patients. Three other major European centres are invited to join from 2016/17. Follow-up will run for 12 months after inclusion of the last patient. All patients are treated according to local practice. Clinical data are collected through standardized online registration at pre-determined time points pre- and postoperatively. Neurological status and speech functions are examined pre- operatively and postoperatively at 1-4 weeks, 2 and 12 months. Pre- and postoperative speech samples are recorded and analysed. Imaging will be reviewed centrally. Pathology is classified according to the 2007 WHO system. Germline DNA will be collected from all patients for associations between CMS characteristics and host genome variants including pathway profiles.Discussion: Through prospective and detailed collection of information on 1) differences in incidence and clinical course of CMS for different patient and tumour characteristics, 2) standardized surgical data and their association with CMS, 3) diversities and results of other therapeutic interventions, and 4) the role of host genome variants, we aim to achieve a better understanding of risk factors for and the clinical course of CMS - with the ultimate goal of defining strategies for prevention and treatment of this severely disabling condition.
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