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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.
171

Comparação entre métodos para mensuração da potência aeróbia em atletas tetraplégicos = Comparison of methods for aerobic power assessment in athletes with tetraplegia / Comparison of methods for aerobic power assessment in athletes with tetraplegia

Campos, Luis Felipe Castelli Correia de, 1987- 22 August 2018 (has links)
Orientador: José Irineu Gorla / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Física / Made available in DSpace on 2018-08-22T01:18:30Z (GMT). No. of bitstreams: 1 Campos_LuisFelipeCastelliCorreiade_M.pdf: 1327568 bytes, checksum: 617f4b2025a91d80a8713bd85628b414 (MD5) Previous issue date: 2013 / Resumo: A avaliação da Potência Aeróbia em atletas com tetraplegia, como indicador de limite máximo de tolerância ao exercício aeróbio, é uma importante área de interesse no campo da performance paradesportiva. O presente estudo teve como objetivo comparar as medições direta e indireta do Consumo Pico de Oxigênio (VO2pico) no teste de campo contínuo e incremental Octagon Multi-Stage Test (OMFT) bem como, correlacionar os valores obtidos no teste contínuo e incremental no ciclo-ergometro de braço (EB). Participaram desse estudo 8 atletas tetraplégicos praticantes de Rugby em cadeira de rodas. Os atletas inicialmente realizaram a avaliação antropométrica para o cálculo do índice de massa corporal (IMC) e percentual de gordura (%G) em seguida foram submetidos ao teste de campo incremental (OMFT) com a utilização do analisador de gás portátil K4b2 Cosmed para mensuração direta do VO2pico. Após 72 horas os mesmos atletas realizaram o teste contínuo e incremental no EB para obtenção dos valores de VO2pico. Pré e pós-testes foram mensurados os valores de Frequência Cardíaca (FC), Concentração de Lactato ([Lac]), Consumo de Oxigênio (VO2) e percepção Subjetiva de Esforço (PSE). Além disso, no teste de campo (OMFT) foram coletados os dados de distância total percorrida, estágio final e número de voltas realizadas variáveis para mensuração indireta do VO2pico. Para os valores de VO2pico, observou-se que no EB os valores de média do grupo foi de 17,8±6 ml/kg/min, enquanto que para o teste OMFT foram de 21,9±5,2ml/kg/min pela mensuração direta e 24,8±3,3ml/kg/min para a mensuração através da equação de predição pré-estabelecida, a FCmax foi de 129,1±24bpm no EB e de 127,8±26bpm no OMFT. Já a PSE foi de 8,2±1,03 no EB e de 6,5±2,2 no OMFT. Através do calculo de correlação entre as mensurações de VO2pico, observou-se alta correlação (r=0.86) entre as mensuração do OMFT direta e indireta com nível de significância de p<0.05 e através do teste de Bland-Altman foi observada a concordância entre os métodos com LIC95% variando de -2,8 a 8,5. O teste OMFT apresenta validade para mensuração da Potência Aeróbia em atletas com tetraplegia, porém, observa-se a necessidade de reajustes no protocolo para que os resultados encontrados sejam de fato mais próximos à realidade dos atletas com tetraplegia, possibilitando maior controle dos resultados obtidos e a prescrição da intensidade de exercícios, evitando assim, lesões devido à sobrecarga do treinamento / Abstract: Evaluation of Aerobic Power in Spinal Cord Injury athletes as an indicator of maximum aerobic exercise tolerance is an important area of interest of sports performance. The present study aimed to compare the direct and indirect measurements of peak oxygen consumption (VO2peak) in field testing continuous and incremental Octagon Multi-Stage Test (OMFT) and to correlate the values obtained in the test continuous incremental in cycle-arm ergometer (EA). Eight athletes of the Wheelchair Rugby participated in this study. These athletes initially underwent anthropometric measurements for calculating the Body Mass Index (BMI) and percent body fat (%BF). After were submitted to field test (OMFT) with the use of portable gas analyzer K4b2 Cosmed for measurement direct of the VO2peak. After 72 hours the same athletes performed the test continuous incremental in EA to obtain the values of VO2peak. Pre and post-test values have been measured heart rate (HR), lactate concentration ([Lac]), oxygen consumption (VO2) and perceived exertion (PE). Moreover, the field test (OMFT) data were collected from total distance traveled, stage, and number of turns. Variables to measurement indirect of VO2 peak. For the VO2peak values, it was observed that the values of the EA group mean was 17.8 ± 6ml/kg/min, whereas for the test OMFT were 21.9 ± 5.2 ml/kg/min by direct measurement and 24.8 ± 3.3 ml/kg/min for measurement prediction equation by pre-established, HRmax was 129.1 ± 24bpm in EA and 127.8 ± 26bpm in OMFT. Already the PSE was 8.2±1.03 in EA and 6.5±2.2 in OMFT. By calculating the correlation between the measurements of VO2peak, there was a high correlation (r = 0.86) between the measurement of direct and indirect OMFT with a significance level of p <0.05 and by Bland-Altman concordance was observed between methods with varying LIC95% from -2.8 to 8.5. The OMFT shows validity for measuring Aerobic Power in athletes with tetraplegia; however, there is a need for adjustments in the protocol so that the results are actually closer to the reality of athletes with tetraplegia, enabling greater control of the results and prescription of exercise intensity, thus avoiding injury due to overload training / Mestrado / Atividade Fisica Adaptada / Mestre em Educação Física
172

Physiological demands and court-movement patterns of wheelchair tennis

Sindall, Paul Adam January 2016 (has links)
The wheelchair tennis evidence base has developed considerably in recent years. For those with a spinal cord injury (SCI), or severe physical impairment, tennis participation represents an opportunity for skill and motor development, and potential for disease risk reduction (Abel et al., 2008). However, as a complex series of technical, tactical and physical elements are implicated, participation for novice, developmental or low-skill players can be challenging. Hence, extension of the evidence base to consider the responses of such groups during play is of considerable value. Initial experimental studies in this thesis investigated the validity, reliability and applicability of instrumentation for the assessment of wheelchair tennis court-movement. Comparisons were made between a global positioning system (GPS) and the data logger (DL) device (Study 1). GPS underestimated criterion distance in tennis-specific drills and reported lower match-play values than the DL. In contrast, DL placed on the outside wheel offered an accurate representation of distance. However, underestimations for DL were revealed at speeds > 2.50 m·s-1 during treadmill testing. Consequently, Study 2 extended this work with consideration of DL applicability for wheelchair tennis match-play. Examination of speed profiles revealed that time spent below the threshold for accuracy was trivial, confirming DL applicability for court-movement assessment. Further between-group comparisons for rank [highly-ranked (HIGH), low-ranked (LOW)], sex (male, female) and format (singles, doubles) revealed that LOW were stationary for longer than HIGH and spent more time at low propulsion speeds. Time in higher speed zones was greatest for HIGH and doubles players. Between-group differences (rank) were further scrutinised in Study 3 with attention paid to describing the physiological response of competitive match-play aligned to court-movement. Set outcome (result) was also examined. Independent of result, HIGH covered greater overall, forwards, reverse and forwards-to-reverse distances than LOW. Interestingly, HIGH winners covered greater distances than HIGH losers and had a higher mean average and minimum heart rate (HR) than LOW winners. In contrast, LOW losers had a higher mean average and mean minimum HR than LOW winners. Collectively, these outcomes suggest an enhanced ability for HIGH to respond to ball movement and the physiological and skill challenges of match-play. While this thesis confirmed that the activity duration and playing intensity is sufficient to confer health-related effects (Study 3), differences identified for rank suggested that strategies to 4 enable performance improvements in LOW were merited. The International Tennis Federation (ITF) has suggested that all starter players should be able to serve, rally and score from their first lesson (ITF, 2007). The reality however, is that chair propulsion whilst holding a racket is complex, and therefore, tennis play is challenging for novice and developmental players. Hence, the remainder of experimental work focused on interventions to enable increased court-movement and development of wheelchair tennis-specific court-mobility for LOW. The ITF have endorsed the use of a low-compression ball (LCB) for novices. An LCB bounces lower and moves more slowly through the air than a standard-compression ball (SCB). Novel findings from Study 4 revealed that greater total and forwards distances, greater average speeds and less time stationary result from use of the LCB. Increased movement activity occurred without associated increases in physiological cost, but was considered advantageous, with players adopting stronger positions for shot-play. Further examination of the linkage between movement and physiological variables were explored in the final experimental investigation (Study 5). A short period of organised practice enabled higher overall and forwards distances, and peak and average speeds to be achieved during match-play, without associated increases in physiological cost. Changes were desirable and represented enhanced court-mobility and mechanical efficiency (ME). Wheelchair tennis players were also more self-confident in tennis-specific chair-mobility, post-practice. The racket was a constraint, with lower distances and speeds, and a lower peak physiological response, achieved during tennis practice completed with a racket. This thesis advocates the use of an LCB and a short period of pre-match court-mobility practice for the novice wheelchair tennis player. Collectively, these interventions are likely to prompt greater court-movement enabling better court-positioning, develop confidence in court-mobility and shot-play, develop competence in racket handling whilst pushing, and enhancing ME. These characteristics are likely to enable participation with the likely inference being that greater competence, skill and self-confidence promotes greater enjoyment and therefore enhances longer-term compliance. This is of considerable practical significance given that tennis typically attracts new players to the game, but is less successful at retaining them (ITF, 2007).
173

The feelings of people with physical disabilities regarding discrimination in Tembisa

Leshilo, W M 09 November 2004 (has links)
The aim of the study was to explore and describe the feelings of people with physical disabilities regarding discrimination in the community of Tembisa. Discrimination against people with physical disabilities is one of the major problems affecting the larger society, impacting on their lives. The exploratory and descriptive designs were used because of insufficient information available on this topic particularly in Tembisa and to describe the feelings of people with disabilities regarding discrimination. A semi-structured interview schedule was used as a data-gathering instrument. The study was conducted among people with physical disabilities who are clients of the organisation Association for Physically Disabled (APD). Ten respondents were then selected following a purposive non-probability sampling method. The study revealed that most people with physical disabilities experience difficulty in accessing some of the public buildings in Tembisa as they are not wheelchair friendly. Housing for people with disabilities was also raised as another problem experienced by people with disabilities in general. The findings further proved that not much has been done regarding inclusion of people with disabilities by employing them in the open labour market. In conclusion, it has been proved that people with disabilities feel isolated, rejected, marginalised and stigmatised in the community of Tembisa by their able-bodied counterparts. Recommendations are provided regarding how people with disabilities can be included in Tembisa and mainstream society. / Dissertation (MA(Social Work)(Health Care))--University of Pretoria, 2005. / Social Work / unrestricted
174

Analyse et interprétation des variations intentionnelles ou perturbatrices de la station debout sur gyropode / Analysis and interpretation of the deliberate or disruptive variations of the upright posture

Trénoras, Lambert 01 December 2014 (has links)
Le travail de cette thèse porte sur l’étude et la conception d’un fauteuil roulantsur deux roues appelé Gyrolift, adaptation d’un gyropode, véhicule de transport autoéquilibré,en fauteuil roulant verticalisateur sur deux roues. La verticalisation permetà une personne assise dans un fauteuil roulant le transfert d’une position assise à uneposition debout.Se mettre debout et se maintenir en équilibre malgré la présence d’un certainnombre de perturbations représente un défi pour une personne en situation de handicap.Les variations de posture de la partie supérieure telle que le tronc peuventêtre dues à des perturbations externes. Nous étudions la détection des mouvementsperturbateurs afin d’interpréter ces derniers ou l’intention qu’ils caractérisent et permettrede réagir en fonction de caractéristiques comme l’intensité et le sens. Nousétudions aussi les impacts de facteurs tels que l’environnement et l’appréhension surle Gyrolift et son utilisateur.Dans le premier chapitre de la thèse, la contribution porte sur l’étude de la trajectoirede verticalisation et sur les perturbations qu’elle peut générer. Un premierprototype a été conçu afin de valider notre étude.Afin de développer notre approche, le second chapitre de la thèse porte sur ladétection de perturbations sur un robot humanoïde bipède. Nous avons obtenu descritères nous permettant une détection rapide et fiable d’une perturbation, de sonsens et de son intensité afin d’effectuer les mouvements adaptés pour compenser cetteperturbation.Enfin, nous avons étudié l’adaptation de ces critères sur le Gyrolift ainsi que lesréactions possibles afin de sécuriser le système. Nous avons pour cela développé etréalisé un second prototype du fauteuil Gyrolift.Nous avons validé cette étude à l’aide d’un robot humanoïde et d’un nouveau typede fauteuil roulant verticalisateur, le Gyrolift, développé dans le cadre de ce projet. / The work of this thesis concerns the study and design of a two-wheel mobilitychair, conscript the Gyrolift, adapted from a Personal Transporter. It provides anauto-well-balanced transport vehicle and a verticalisation mechanism. The verticalisationallows a user in a wheelchair the transfer from a seat position to a standingposition.Being in a standing position and remaining stable when disturbances are presentmay be a challenge for a person with a mobility impairment. The posture variationsof the upper limbs such as the trunk can be due to external disturbances. This studydiscusses the detection of disruptive movements and to interpret the disturbances. Asafety ystem reacts according to the intensity of the disturbance when detected. Wealso study the impacts of factors such as the environment and the apprehension onthe Gyrolift and user.In the first chapter of the thesis, the contribution concerns the study of the trajectoryof verticalisation and the disturbances which it can generate. A first prototypewas designed to validate our study.The second chapter of the thesis concerns the detection of disturbance on bipedshumanoids robots. We obtained criteria allowing us a fast and reliable detection ofa disturbance, its direction and its intensity to make the movements adapted tocompensate for this disturbance.Finally, we studied the adaptation of these criteria on the Gyrolift as well as thepossible reactions to secure the system. We developed and realised for it a secondprototype of the Gyrolift wheelchair.We validated this study with the help of a humanoid robot and a new type ofverticalisation wheelchair developed within the framework of this project.
175

Identidade social e auto conceito do dançarino em cadeira de rodas / Social identity and self concept of wheelchair dancer

Lopes, Keyla Ferrari 18 August 2018 (has links)
Orientador: Paulo Ferreira de Araújo / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Física / Made available in DSpace on 2018-08-18T10:42:06Z (GMT). No. of bitstreams: 1 Lopes_KeylaFerrari_M.pdf: 916485 bytes, checksum: b6d4bbb5e0a58ac1fa50675f0a4624e6 (MD5) Previous issue date: 2011 / Resumo: A atualidade tem revelado dentre muitos fenômenos plausíveis de estudos, aqueles relacionados à atividade física e à pessoa em condição de deficiência. Neste sentido, este estudo busca refletir sobre a identidade social e auto - conceito do dançarino em cadeira de rodas no contexto de espetáculos abertos ao público e nas relações estabelecidas entre os dançarinos e os expectadores. Assim entende-se, para os fins propostos deste estudo, que a dança se faz relevante na medida em que cria um ambiente para a comunicação entre grupos ou identidades sociais, construídas na relação com o "outro". Como técnica de coleta de dados, realiza-se entrevistas com dançarinos atuantes em grupos e companhias de dança em cadeira de rodas, utilizando procedimentos da técnica de análise de conteúdo, a fim de levantar indicadores para análise das respostas dos dançarinos entrevistados. Por meio do material coletado nos foi possível tecer considerações sobre a identidade social e o papel social do artista dançarino com deficiência mediado pelas relações estabelecidas entre a dança, corpo com deficiência, sociedade e auto - conceito mediado pelas relações e feedbacks entre dançarinos e expectadores nos contexto dos ensaios, espetáculos e pós- espetáculos / Abstract: Present time has shown, among many study plausible phenomena, those related to physical activity and to person presenting a disability condition. In this sense, the purpose of this study is to reflect about social identity and self-concept of wheelchair dancer, within context of spectacles open to the public and relations created between dancers and audience. Thus, for this study purposes, it is understood that dance becomes relevant as it creates an environment for communication between groups or social identities, built in relation with the "other". As a data collection technique, interviews are carried out with dancers from wheelchair dance groups or companies, applying content analysis technique procedures, to find indicators for interviewed dancers' answers analysis. Collected material enabled us to comment disabled dancer artist's social identity and social role, mediated by relations established among dance, disabled body, society and self-concept, mediated by relations and feedbacks between dancers and audiences, within context of rehearsals, spectacles and post-spectacles / Mestrado / Atividade Fisica Adaptada / Mestre em Educação Física
176

Controle de uma cadeira de rodas baseado em sistema operacional android / Control of a wheelchair based on android operational system

Quiroz, César Henrique Córdova, 1988- 05 June 2015 (has links)
Orientadores: Antonio Celso Fonseca de Arruda, Paulo Roberto Gardel Kurka / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica / Made available in DSpace on 2018-08-27T18:15:09Z (GMT). No. of bitstreams: 1 Quiroz_CesarHenriqueCordova_M.pdf: 12262976 bytes, checksum: 366530cff1ef38066096c0ad2e8735fe (MD5) Previous issue date: 2015 / Resumo: O trabalho desenvolveu um conjunto de ferramentas simples (interface gráfica e comunicação remota) que permitiram o controle e monitoração dos diferentes sensores e atuadores embarcados em uma cadeira de rodas elétrica. A solução encontrada para realizar os comandos necessários, de modo remoto, foi utilizar um dispositivo móvel (smartphone) baseado em sistema operacional Android. Os principais aspectos considerados no desenvolvimento foram utilizar o hardware e o software que propiciaram uma interface de interação entre o usuário e os atuadores presentes na cadeira de rodas. Adicionalmente foi previsto e viabilizada a possibilidade de um acompanhante efetuar comandos, por meio de outro celular móvel, segundo critérios de prioridade inseridos na programação. A opção por utilizar dispositivos móveis convencionais está vinculada com a capacidade de recorrer, por meio de aplicativos específicos, aos diversos recursos (bibliotecas) que são embarcadas em um telefone móvel ou tablet. O aplicativo criado utilizou o sistema operacional Android pela facilidade de acesso ao código fonte. O aplicativo possibilita o uso dos botões presentes nos smartphones para cumprir tarefas de controle direcional e de velocidade. Adicionalmente sensores ultrassônicos , instalados na cadeira, impedem a colisão com obstáculos presentes no trajeto. Os testes realizados demonstraram a eficácia da movimentação da cadeira, do controle de velocidade e da atuação dos sensores de colisão. A proposta inicial de uma cadeira de rodas elétrica a ser utilizada por crianças, foi estendida para adultos, o que foi comprovado em teste realizado com uma pessoa de 80 quilogramas. A velocidade máxima final independente da carga foi de 0,8m/s (2,88km/h). Na programação do aplicativo foi considerado e implementado um controle para impedir o tranco no início da movimentação, objetivando o fator ergonômico do usuário / Abstract: The work developed a set of simple tools (graphical user interface and remote communication) that allowed the control and monitoring of different sensors and actuators embedded in a electric wheelchair. The solution to make necessary commands remotely, was to use a mobile device (smartphone) based operating system Android. The main aspects considered in the development were using the hardware and software that provided an interaction interface between the user and actuators in the wheelchair. Additionally it was intended and the possibility of a viable accompanying perform controls by means of another mobile phone according to priority criteria included in the programming. The option to use conventional mobile devices is linked with the capacity to use through specific applications, the various resources (libraries) that are embedded in a mobile phone or tablet. The application created used the Android operating system for ease of access to the source code. The application enables the use of buttons present in the smartphones to fulfill directional control and velocity. Additionally ultrasonic sensors installed in the chair, prevent collision with obstacles present in the path. The tests demonstrated the effectiveness of the movement of the chair, speed control and the performance of the collision sensors. The initial proposal of an electric wheelchair to be used by children, has been extended to adults, which has been proven in test performed with a person of 80kg. The independent final maximum speed of the load was $0.8m/s$ or (2,88km/h). In the application programming was considered and implemented a control to prevent stride in the early movement, aiming the ergonomic factor user / Mestrado / Materiais e Processos de Fabricação / Mestre em Engenharia Mecânica
177

Hjälpmedlet som får livet att rulla vidare

Al-Assaf, Sara, Lindqvist, Cornelia January 2019 (has links)
Välfärdsstaten i Sverige styrs av politikerna som sätter regler för hjälpmedelshan-teringen dock så är kommunerna självstyrda vilket konstaterar i att individens rättigheter kan påverkas då kommunerna följer sina egna bestämmelser. De pro-fessionella ska vägleda individen till rätt hjälpmedel genom en behovsbedömning och sträva efter individens självständighet. Målet är att möjliggöra att individen upplever delaktighet, självständigt liv och har möjligheten till ett aktivt liv som ingår i kriterierna för mänskliga rättigheter. Individen bör bli hörd för att kunna ha möjligheten att vara delaktig i samhället som alla andra. En bidragande faktor till delaktighet kan vara rätt anpassat hjälpmedel i form av en rullstol som upp-fyller individens behov. Individen bör ha fler valmöjligheter i det upphandlade hjälpmedelssortimentet som bör erbjudas och inte begränsas av bland annat kommunen. Då samhället ständigt förändras bör hjälpmedelsproduktionen följa samhällets utveckling och producera produkter med Universal design det vill säga produkter som möjliggöra fler användningsområden. / The welfare state in Sweden is govern by the politicians who sets regulations of the processing aids, though the municipalities is autonomous which state in the individual’s rights can be affected as the municipalities follow their own regula-tions. The professionals shall guide the individual to right accessibility aid through a needs assessment and strive after the individual’s independence. The goal is to enable the individual experiencing participation, independent life and the opportunity for an active life which is a part of the criteria for human rights. The individual should be heard in order to have the opportunity to participate in society as everyone else. A contributing factor to participation can be right adapted accessibility aid in form of a wheelchair that fulfills the individual’s need. The individual should have more options in the procured accessibility aid assortment which should be offered and not restricted by inter alia the municipal-ity. As society is constantly changing, the accessibility aid production should follow the development of society and produce products with Universal design i.e. products that enables more applications.The study was based on a semi-structured interview with six participants. Based on the study, it appeared that the representatives considered that the provision of assistive technology could increase the individual's empowerment and contribute to society. The representatives relate to the human rights and laws of society and the workplace as well as the professional knowledge. It can be emphasized that further research was needed in the area of recreational aids.
178

Design sportovního vozíku pro hendikepované / Design of Sports Wheelchair

Žerávková, Iveta January 2019 (has links)
The topic of this master thesis is the Design of sport wheelchair. The design brings new possibilities in shaping the seat thanks to use new material and manufacturing process. There are use special materials for padding too. The design of the extended rim also offers a new way of gripping wheels. Last but not least, the new design is more concerned with the aesthetic side of the product and works with a simpler and more airy frame. This thesis brings a different perspective on the design of sports carts
179

Design invalidního vozíku / Design of a Wheelchair

Štubianová, Zuzana January 2020 (has links)
The topic of this master thesis is the design of manual wheelchair designed for physically handicapped users with paralysis of the upper part of the body, paraplegia. The user is the central object of the design, significant emphasis is given on the needs of physically handicapped users as well as on the common perception of those people by society. The designed concept is taking into account usage of new materials such as plastics and composites which are allowing progressive shape.
180

Design přídavného modulu k invalidnímu vozíku / Design of additional module for wheelchair

Matyščáková, Petra January 2009 (has links)
This graduation theses is engaged in design of additional module to wheelchair. The project should bring new solution of shape of the equipment, but at the same time keep the original frame. Final solution has sporty look and it results from inner construction and stifles sanitary sterility.

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