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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Měření zátěžových sil na plosce nohy v bruslařské botě pro lední hokej a jejich kazuistický význam / Measurement of loading forces on sole of the foot in ice-hockey skates and their casuistic mean

Šťastný, Petr January 2011 (has links)
Title: The measurement of loading forces acting on sole of the foot in ice-hockey skates and their casuistic signification Abstract This thesis describe a new construction of measuring device, which is able to detect the loading forces acting on the skates during ice-hockey. This device was calibrated and validated for detection of loading force vector, bending force vector and point of force action on the skate blade. For some cases was described a casuistic mean of measurement by new measuring device "measuring skates" and former device Footscan Insole®. The measurement of loading forces during ice-hockey may be used in practise of skating technique, predictive or protective biomechanics. Future use is also research of discomfort in ice-hockey boots or sportsengeneering. Aim of a study: Aim of a study is projected, calibrated and validated a measuring device able to detect interraction in system foot-skates-surface. After validation is neccessary to prove the practical benefit of this device. This device should make possible to find out the origin of discomfort during ice-hockey skates use. Methods: After a critical review the prototype of measuring skate was constructed. The measuring skate was calibrated a nd validated. In contend of pilot study was done the experiment to proof the casuistic mean of...
12

Efeitos de uma informação sensorial adicional no controle postural: envelhecimento e doença de Parkinson

Hamanaka, Ágata Yoko Yasue [UNESP] 13 November 2008 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:22:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-11-13Bitstream added on 2014-06-13T19:49:09Z : No. of bitstreams: 1 hamanaka_ayy_me_rcla.pdf: 547632 bytes, checksum: 7798d22c3d41b95d28e897b9f6b472fd (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A instabilidade postural é um dos sinais constatados na doença de Parkinson (DP) e, freqüentemente, está relacionada com quedas. Distúrbio no sistema somatossensorial pode ocorrer na DP e contribuir com o déficit do controle postural. Este distúrbio pode estar relacionado com déficits nos receptores sensoriais, na integração central destas informações ou na resposta motora inapropriada. Contudo, a informação somatossensorial adicional pode auxiliar na manutenção da postura ereta em indivíduos sadios. Desta forma, o objetivo do estudo foi analisar os efeitos da informação somatossensorial adicional, aplicada na sola do pé, no controle postural de adultos jovens, idosos neurologicamente sadios e idosos com DP. Nove participantes de cada grupo mantiveram a postura ereta bipodal, sobre uma plataforma de força, em duas condições: descalço e sobre palmilhas. As palmilhas utilizadas neste estudo foram projetadas com o objetivo de adicionar informação sensorial na sola dos pés. Para isso, as palmilhas possuem elevações em forma de semi-esferas distribuídas em locais estratégicos, onde há maiores concentrações de mecanorreceptores de adaptação lenta e pontos mais utilizados durante a oscilação postural. As variáveis tradicionais da posturografia foram calculadas para analisar o controle postural. Independente das condições, não houve diferença do controle postural entre adultos jovens e idosos neurologicamente sadios, porém, idosos com DP apresentaram aumento na maioria das variáveis calculadas em relação aos outros dois grupos, confirmando estratégias compensatórias para manter a postura ereta. A informação somatossensorial adicional proporcionada pelas palmilhas foi suficiente para melhorar o controle postural dos três grupos analisados. Assim, adultos jovens, idosos sadios e idosos com DP utilizam a informação adicional para reduzir a oscilação postural no plano frontal. / The postural instability is a signal of Parkinson’s disease (PD) and it is often related to falls. Somatosensory system disturbance can occur with PD and it can contribute to impairment in postural control. This impairment can be related to deficits in the sensory receptors, in the central integration of this information or in the inappropriate motor response. However, additional somatosensory information can help in the maintenance of upright quiet stance in healthy individuals. Thus, the aim of this study was to analyze the effects of the additional somatosensory information, applied on the foot sole, on the postural control of young adults, healthy older adults and older adults with PD. Nine participants of each group were asked to maintain an upright quiet bipedal stance on a force plate under two conditions: barefoot and on the insoles. The insoles used in this study were designed to add sensory information on the foot sole. In order to do that, the insoles have elevated half-spheres distributed in strategic sites, where there are higher concentrations of mechanoreceptors of slow adaptation and/or the sites more utilized for postural oscillation. Traditional posturography variables were calculated to analyze the postural control. Independently of the conditions, there were no differences between young adults and healthy older adults in postural control. Almost all variables increased for patients with PD when compared with the other groups, which can be considered as compensatory strategies to maintain the upright stance. The additional somatosensory information provided by the insoles was sufficient to improve postural control of all three groups. Therefore, young adults, healthy older adults and patients with PD were able to use the additional information provided by the insoles to decrease body sway, especially in the frontal plane.
13

Efeitos de uma informação sensorial adicional no controle postural: envelhecimento e doença de Parkinson /

Hamanaka, Ágata Yoko Yasue. January 2008 (has links)
Orientador: Lilian Teresa Bucken Gobbi / Banca: Luis Mochizuki / Banca: Luciane Aparecida Pascucci Sande de Souza / Resumo: A instabilidade postural é um dos sinais constatados na doença de Parkinson (DP) e, freqüentemente, está relacionada com quedas. Distúrbio no sistema somatossensorial pode ocorrer na DP e contribuir com o déficit do controle postural. Este distúrbio pode estar relacionado com déficits nos receptores sensoriais, na integração central destas informações ou na resposta motora inapropriada. Contudo, a informação somatossensorial adicional pode auxiliar na manutenção da postura ereta em indivíduos sadios. Desta forma, o objetivo do estudo foi analisar os efeitos da informação somatossensorial adicional, aplicada na sola do pé, no controle postural de adultos jovens, idosos neurologicamente sadios e idosos com DP. Nove participantes de cada grupo mantiveram a postura ereta bipodal, sobre uma plataforma de força, em duas condições: descalço e sobre palmilhas. As palmilhas utilizadas neste estudo foram projetadas com o objetivo de adicionar informação sensorial na sola dos pés. Para isso, as palmilhas possuem elevações em forma de semi-esferas distribuídas em locais estratégicos, onde há maiores concentrações de mecanorreceptores de adaptação lenta e pontos mais utilizados durante a oscilação postural. As variáveis tradicionais da posturografia foram calculadas para analisar o controle postural. Independente das condições, não houve diferença do controle postural entre adultos jovens e idosos neurologicamente sadios, porém, idosos com DP apresentaram aumento na maioria das variáveis calculadas em relação aos outros dois grupos, confirmando estratégias compensatórias para manter a postura ereta. A informação somatossensorial adicional proporcionada pelas palmilhas foi suficiente para melhorar o controle postural dos três grupos analisados. Assim, adultos jovens, idosos sadios e idosos com DP utilizam a informação adicional para reduzir a oscilação postural no plano frontal. / Abstract: The postural instability is a signal of Parkinson's disease (PD) and it is often related to falls. Somatosensory system disturbance can occur with PD and it can contribute to impairment in postural control. This impairment can be related to deficits in the sensory receptors, in the central integration of this information or in the inappropriate motor response. However, additional somatosensory information can help in the maintenance of upright quiet stance in healthy individuals. Thus, the aim of this study was to analyze the effects of the additional somatosensory information, applied on the foot sole, on the postural control of young adults, healthy older adults and older adults with PD. Nine participants of each group were asked to maintain an upright quiet bipedal stance on a force plate under two conditions: barefoot and on the insoles. The insoles used in this study were designed to add sensory information on the foot sole. In order to do that, the insoles have elevated half-spheres distributed in strategic sites, where there are higher concentrations of mechanoreceptors of slow adaptation and/or the sites more utilized for postural oscillation. Traditional posturography variables were calculated to analyze the postural control. Independently of the conditions, there were no differences between young adults and healthy older adults in postural control. Almost all variables increased for patients with PD when compared with the other groups, which can be considered as compensatory strategies to maintain the upright stance. The additional somatosensory information provided by the insoles was sufficient to improve postural control of all three groups. Therefore, young adults, healthy older adults and patients with PD were able to use the additional information provided by the insoles to decrease body sway, especially in the frontal plane. / Mestre
14

kil-inlägg som behandlingsmetod för gonartros jämfört med neutrala inlägg, en systematisk översikt / Wedge insole as treatment method for knee osteoarthritis compared with natural insole, a systematic review

Lindblad, Pontus, Rune, Emil, Johansson, David January 2020 (has links)
Bakgrund: Många individer oftast äldre drabbas av gonartros, denna diagnos kan orsaka smärta och nedsatt funktion vilket i sin tur kan leda till begränsningar i det dagliga livet. Detta är en systematisk litteraturöversikt över studier som har undersökt laterala kil-inlägg som behandlingsmetod för att minska smärta och förbättra funktion hos patienter med medial gonartros. Syfte: Att studera om laterala kil-inlägg leder till reducerad smärta och främjad funktion jämfört med neutrala inlägg. Vidare utreds också om resultatet är baserat på olika undergrupper. Metod: En systematisk sökning i databaserna PubMed, MEDLINE, AMED, CINAHL och Cochrane Library utfördes för att hitta relevanta studier som sedan inkluderades utifrån förutbestämda kriterier. Data analyserades utifrån dessa artiklar för att besvara frågeställningen i detta arbete. Artiklarnas evidens och validitet/reliabilitet har bedömts. Resultat: Resultaten visar att laterala kilinlägg inte ger reducerad smärta och främjad funktion. Det finns heller inga samband kopplat till undergrupperna som studeras i denna systematiska översikt. Slussats: Det finns i denna rapport blandat med bevis för huruvida laterala kilinlägg reducerar smärta och främjar funktion. Även om ett antal studier påvisar positiva effekter är detta inte tillräckligt för att på ett statistiskt signifikant sätt säga att det hjälper. Det går inte att säga om behandlingen är mer lämpad för någon specifik undergrupp. / Background: Many individuals often the elderly suffering of gonatros, this diagnosis can cause pain and impaired function which in turn can lead to limitations in daily living. This is a systematic review of studies that have investigated lateral wedged insoles as a treatment to reduce pain and improve function in patients with medial gonartros. Aim: To study whether lateral wedge insoles lead to reduced pain and improved function compared with neutral insoles. Furthermore, it is also investigated if the result is based on different sub-groups. Method: A systematic search in the databases PubMed, MEDLINE, AMED, CINAHL and Cochrane Library was performed to find relevant studies which then were included based of predetermined criteria. Data from these articles where analysed to answer our question in this paper. The articles were examined for risk of bias and validity/reliability. Results: The results show that lateral wedge insoles do not reduce pain and improve function. There are also no signs that a certain sub-group would be more suited for the treatment. Conclusion: There is in this paper a contradictory result of whether lateral wedge insoles reduce pain and improve function. Although several studies indicate positive effects it is not enough to prove in a statistically significant way that it helps. It is not possible to say whether the treatment is more suitable for any specific subgroup.
15

DT-DNA: Devising a DNA Paradigm for Modeling Health Digital Twins

Badawi, Hawazin Faiz 19 March 2021 (has links)
The potential of Digital twin (DT) technology outside of the industrial field has been recognized by researchers who have promoted the vision of applying DTs technology beyond manufacturing, to purposes such as enhancing human well-being and improving quality of life (QoL). The expanded definition of DTs to incorporate living and nonliving physical entities into the definition of DTs was a key motivation behind the model introduced in this thesis for building health digital twins of citizens. In contrast with DTs that have been developed in more industrial fields, this type of digital twins modeling necessitates protecting each citizen's unique identity while also representing features common to all citizens in a unified way. In nature, DNA is an example of a model that is both unified, common to all humans, and unique, distinguishing each human as an individual. DNA’s architecture is what inspired us to propose a digital twin DNA (DT-DNA) model as the basis for building health DTs for citizens. A review of the literature shows that no unified model for citizens’ health has been developed that can act as a base for building digital twins of citizens while also protecting their unique identity thus we aim to fill this gap in this research. Accordingly, in this thesis, we proposed a DT-DNA model, which is specifically designed to protect the unique identity of each citizen’s digital twin, similar to what DNA does for each human. We also proposed a DT-DNA-based framework to build standardized health digital twins of citizens on micro, meso and macro levels using two ISO standards: ISO/IEEE 11073 (X73) and ISO 37120. To achieve our goal, we started by analyzing the biological DNA model and the influencing factors shaping health in smart cities. The purpose of the first is to highlight the DNA model features which provide the building blocks for our DT-DNA model. The purpose of the latter is to determine the main bases of our DT-DNA model of health DTs. Based on the analysis results; we proposed DT-DNA to model health DTs for citizens. In keeping with our DNA analogy, we have identified four bases, A, T, G, and C, for our unified and unique DT-DNA model. The A base in the proposed model represents a citizen’s anthropometric when we build the DT-DNA on an individual level and represents the city’s regulatory authorities when we build the DT-DNA on community and city levels. The T base represents different tasks included in the provided health data that are required to model citizens’ health DT-DNA on different levels. The G base represents the geographic and temporal information of the city, where the citizen exists at the time of data collection. The C base represents the context at the time of data collection. To proof the concept, we present our initial work on building health DTs for citizens in four case studies. The first two case studies are dedicated for health DTs at the micro level, the third case study is dedicated for health DTs at the meso level and the fourth case study is dedicated for health DTs at the macro level. In addition, we developed an algorithm to compare cities in terms of their community fitness and health services status. The four case studies provide promising results in terms of applicability of the proposed DT-DNA model and framework in handling the health data of citizens, communities and cities, collected through various sources, and presenting them in a standardized, unique model.

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