Orientador: Maria Aparecida Affonso Moyses / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-15T18:33:00Z (GMT). No. of bitstreams: 1 Jardini_RenataSavastanoRibeiro_D.pdf: 2104827 bytes, checksum: 23920f2f98046659663ef841a46411d3 (MD5) Previous issue date: 2007 / Resumo: As alterações na musculatura e função linguais podem resultar em deglutições atípicas, distúrbios articulatórios, respiração oral, na síndrome da apnéia do sono (SAHOS) e em alterações estéticas, como as "papadas". Fez-se uso do Exercitador Lingual, desenvolvido pela autora, para fortalecer a musculatura da língua e trazer maior eficiência à reeducação. O objetivo foi propor outra forma de tratamento que consiste no fortalecimento dos músculos elevadores da língua, longitudinal superior e transverso, minimizando a ação do genioglosso. Participaram 76 crianças (6 a 18 anos), sendo 38 sem alterações - grupo controle (GC) e 38 sintomáticas, por deglutições atípicas, distúrbios articulatórios de /s/ (ceceio), /r/ (dorsalização) e respiradores orais - grupo experimental (GE). A avaliação propôs a manutenção da língua afilada e protraída por 30 segundos, classificadas em normotensas quando atingiam 30s e flácidas abaixo desse tempo, divididas em severas (0s a 8s); moderadas (9s a 15s) e leves (16s a 29s). A deglutição e a fala receberam escores de zero (inadequação máxima) a três (correta automatização da função). O GE foi avaliado em T0, início do tratamento; T1, 15 dias de uso do aparelho; T2, 45 dias e T3, 90 dias. Obteve-se, como resultados, 83,33% de correlação entre o tempo do afilamento lingual e o tempo de uso do aparelho. Em relação à deglutição, a correlação que era de 99,83% no início do tratamento, passou para -74,80% em T3. Após 90 dias de exercitação os grupos tornaram-se estatisticamente iguais. A adequação muscular propiciou uma melhora no desempenho da função, atingindo a correta automatização (86,84% de línguas normotensas; 89,47% com deglutição adequada, 69,23% eliminaram o distúrbio articulatório e 100% de respiradores nasais). Conclui-se que a intervenção proposta colaborou de forma significativa na reeducação lingual para os indivíduos pesquisados, restabelecendo a normalidade no desempenho das funções de deglutição e fala em 90 dias de exercitação / Abstract: The alterations in tongue musculature and functions have resulted in atypical deglutitions, articular disorders, oral breathing and the sleep apnea syndrome (SOHAS), as well as esthetic alterations, such as the "double chins". The Lingual Exerciser was developed by the author in order to strengthen tongue musculature, minimize the exercising time and provide higher effectiveness to reeducation. The objective of the present study was to introduce a new treatment approach for the tongue musculature, which comprises the strengthening of the elevator muscles, superior longitudinal and transverse. Seventy-six children (6 to 18 years old) were selected and divided into two groups: control group (CG), n = 38, with no alterations; and experimental group (EG), n = 38, symptomatic children, presenting atypical deglutitions, phonetic articular disorders of the /s/, frontal lisping and /r/, dorsalization or retroflection, and oral breathers. The idealized evaluation proposed to maintain the tongue tapered and protracted for 30 seconds, being classified as normotense when they reached 30 seconds, and hypotense when they were not able to keep to position for this period of time, subdivided into severe, (0s to 8s); moderate (9s to 15s); and mild (16s to 29s). Deglutition and speech were scored from 0 (maximum inadequacy) to 3 (correct function automation). The EG was evaluated in T0 for treatment baseline; T1, 15- day use of the appliance; T2, 45-day use, and T3, 90 days. The results achieved represent 83.33% of probability that the increased time of tongue tapering is related to the increased time of appliance use; after 90 days of exercising, the results were statistically significant for tongue tonicity, deglutition and speech, which made control and experimental groups statistically similar. With relation to deglutition symptomatology, the correlation which was 99.83% in the baseline, decreased to 74.80% in T3, showing that the longer the time of appliance use, the better the deglutition. There was an improvement in function performance as a consequence of the muscular fit, providing the correct automation (86.84% of the tongue became normotense; 89.47% of the individuals started to present appropriate deglutition, 69.23% eliminated articular disorder, and 100% became nasal breathers). It is possible to conclude that the approach proposed have significantly collaborated for the tongue reeducation of the individuals investigated, reestablishing normality in performing the functions of both deglutition and speech in 90 days of exercising / Doutorado / Saude da Criança e do Adolescente / Doutor em Saude da Criança e do Adolescente

CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / Estudos anteriores demonstraram que uma fraÃÃo rica (F(3-5)) em alcalÃides indÃlicos extraÃda das cascas da raiz de Aspidosperma ulei Markgr. exibe funÃÃo prÃ-eretil in vivo e relaxamento em corpos cavernosos de coelhos in vitro. Um estudo recente demonstrou que 17-nor-subincanadina E (SEC), um alcalÃide extraÃdo das cascas do caule da mesma planta, apresentou atividade prÃ-eretil in vivo. O presente trabalho teve por objetivo avaliar o efeito desse alcalÃide sobre o tÃnus de diferentes tipos de musculatura lisa de coelhos e investigar o mecanismo de aÃÃo da substancia sobre o mÃsculo liso cavernoso in vitro. Os tecidos foram montados em banhos de 5 ml contendo soluÃÃo de Krebs-Henseleit (CO2 5% - O2 95%; 37ÂC). A resposta relaxante mÃxima induzida por SEC (1 â 100 Âg/ml) em segmentos de corpos cavernosos de coelhos contraÃdos com fenilefrina (PHE-10&#956;M) foi de 100%, e apresentou um efeito relaxante preferencial para esse tecido, IC50[7, 174 (3,155 - 16,31) &#956;g/ml]. SEC promoveu tambÃm relaxamento em anÃis de aorta na presenÃa e na ausÃncia de endotÃlio, IC50[29,76 (90,32 â 115,6) &#956;g/ml] e IC50[26,13 (75,83 â 119,9) &#956;g/ml], respectivamente, anÃis de traquÃia IC50[60,25 (0,330 â 109,8) &#956;g/ml] e em segmentos de duodeno IC50[76,78 (33,09 â 178,2) &#956;g/ml]. O relaxamento induzido por SEC (1 â 100 Âg/ml) nÃo foi afetado por bloqueadores adrenÃrgicos (fentolamina e guanetidina), muscarÃnicos (atropina), ou bloqueadores dos canais de potÃssio dependentes de ATP (KATP)(glibenclamida) e ativados por cÃlcio (Kca) (apamina e iberiotoxina) e nem na presenÃa de L-NAME; a adiÃÃo de ODQ (30 ÂM) bloqueou o relaxamento induzido por SEC (79,1%  4,5%; p<0,05). Observou-se tambÃm um aumento dos nÃveis teciduais de AMPc (331,95%  26,1%; p<0,05) e GMPc (21,5%  4,2%; p<0,05). SEC (10 Âg/ml e 30 Âg/ml) potencializou o relaxamento induzido por gliceriltrinitrato (GTN) e forskolina (FK) e foi capaz de diminuir o relaxamento induzido pela estimulaÃÃo por campo elÃtrico (ECE) (65,0%  10,9%; p< 0,05). SEC 15 &#956;g/ml bloqueou a contraÃÃo induzida por CaCl2 1 - 300 mM em corpos cavernosos de coelhos prÃ-contraÃdos com K+ (40 mM), 0 Ca++. Nossos resultados indicam que SEC manifesta atividade relaxante preferencial no mÃsculo liso cavernoso a nÃvel perifÃrico e que esse efeito està aparentemente relacionado com um aumento dos nÃveis de AMPc e GMPc e um possÃvel bloqueio do fluxo de cÃlcio. Estes dados sugerem que Aspidosperma ulei Markgf. pode ser explorada como uma alternativa para o tratamento da disfunÃÃo erÃtil. / Past studies have shown that the indole alkaloidal rich fraction (F(3-5)) from Aspidosperma ulei Markgr. root bark displays pro-erectile function in vivo and a relaxant effect on isolated rabbit corpus cavernosum in vitro. Also, a recent study demonstrated the in vivo pro-erectile like activity of 17-nor-subincanadina E (SEC), an alkaloid isolated from stem bark of this plant. This study aimed to assess further the effect of SEC on the smooth muscle tone (spontaneous or induced) in vitro, utilizing the strips of tracheal, intestinal, vascular and corpus cavernosal tissues of rabbits. An attempt was also made to study the possible mechanism of SEC on rabbit corpus cavernosum (RbCC). RbCC strips, were mounted in organ baths containing Krebs solution. After equilibration, the tissues were precontracted with phenylephrine (10 ÂM) or potassium (40mM). SEC (1-100 &#956;g/ml) caused a concentration dependent relaxation in the isolated rabbit corpus cavernosum precontracted with phenylephrine and displayed comparatively greater relaxant effect on corpus cavernosum IC50 [7,174 (3,155-16,31) &#956;g/ml], SEC produced concentration-dependent relaxations of the aortic rings in endothelium intact and denuded IC50[29,76 (90,32â115,6) &#956;g/ml] and IC50[ 26,13 (75,83â119,9) &#956;g/ml], respectively, trachea rings IC50[60,25 (0,330-109,8) &#956;g/ml], and of spontaneous motility in segments of duodenum IC50[76,78 (33,09â178,2) &#956;g/ml]. The relaxant effect of SEC (1-100 Âg/ml) on phenylephrine contraction was unaffected in the presence of adrenergic blockers (phentolamine and guanethidine), muscarinic blocker (atropine), KATP channel blocker (glibenclamide), Ca2+-dependent K+ channel blockers (apamin and iberiotoxin), and in the presence of N-omega-nitro-L-arginine methyl ester (L-NAME 100 ÂM)). However, the SEC relaxation was significantly attenuated by ODQ (30 &#956; M) (79.1%Â4.5%, p <0.05). Incubations of RbCC with SEC (10 and 30 Âg/mL) caused significant increases of cGMP (21.5%Â4.2%, p <0.05) and cAMP (331.95%Â26.1%, p <0.05) levels. Preincubation with SEC (10 and 30 ÂM) also significantly enhanced the relaxation response to the exogenous NO-donor (GTN) and an activator of adenyl cyclase (forskolin). the relaxations evoked by electrical stimulation was significantly decreased by SEC (10 Âg/mL) (65.0%Â10.9%, p <0.05). The phasic component of the contraction induced by K+ 40 mM as well as the maximal contraction elicited by increasing external Ca2+ concentrations in depolarized corpora cavernosa was inhibited by SEC (15 Âg/mL). Our results indicate that SEC can induce comparatively a greater relaxant effect on rabbit cavernosal tissue in vitro via a mechanism that involves an increase of cAMP and cGMP levels and a blocking effect on calcium flux. These data suggest that Aspidiosperma ulei Markgr. can be explored as an alternative for the treatment of erectile dysfunction.

Title: Effect of exteroceptive stimulation on muscle tone after physical activity Aims: The aim of this diploma thesis is to summarize theoretical findings regarding the muscle tonus, biomechanical characteristics of soft tissues and the influence of exteroceptive stimulation on muscle tonus. In practical part, the influence of exteroceptive stimulation on muscle tonus after anaerobic exercise was evaluated using the measuring instrument - myotometer. Methods: Diploma thesis was approached as pilot and was processed at FTVS-UK in the form of analytical-comparative study on the group of six probands who experienced endurance Wingate test and then they underwent the exteroceptive stimulation technique. The main objective of this experiment was the evaluation of effect of stroking - the exteroceptive stimulation on muscle tonus. The muscle tonus was measured before the exertion, after anaerobic exertion, after passive rest and after exteroceptive stimulation. Measuring of muscle tonus of m. soleus was performed in FTVS-UK laboratory using myotonometer. The data were displayed through analog-digital convertor and were subsequently processed in program Matlab. Outcomes: Experiment partly proved mutual relationship between skin and muscle and possibility of influencing the muscle using the exteroceptive...

POSSIBILITIES OF THE USE OF INDENTATION TESTS WHILE STUDYING THE MECHANICAL PROPERTIES OF SOFT TISSUES OF THE HUMAN LOCOMOTOR SYSTEM IN VIVO, IN SITU ABSTRACT: The aim of this work was to analyze possibilities of the use of indentation tests, while studying mechanical properties of human locomotor system soft tissues in vivo, in situ. The synthesis of published findings and the results of our own surveys were used. A mathematical model of the indentation test was created as a part of theory. The geometry of the task was formulated as a solid cylinder penetrating into an infinite half-space made of viscoelastic material. The solution is based on the traditional analytical approach concerning stationary loading of flexible material. This procedure is generalized for Neo-Hooke's hyperelastic material and large deformations. The quantification of dissipative processes is based on the assumption that the stress tensor of a viscoelastic material can be decomposed into a purely elastic constituent and a purely dissipative constituent. The model enables to determine both elastic and viscous properties of the material. Experimental part of the work includes validation experiments. Based on the findings, it can be stated that myotonometry is a valid diagnostic method that allows an objective assessment of muscle tone...

Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-22T12:01:53Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_GabrieleGroehsGuerreiro.pdf: 3199151 bytes, checksum: 756703b7a0674b416dcb2ff9e0f31bfd (MD5) / Made available in DSpace on 2018-08-22T12:01:53Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_GabrieleGroehsGuerreiro.pdf: 3199151 bytes, checksum: 756703b7a0674b416dcb2ff9e0f31bfd (MD5) Previous issue date: 2018-02-20 / Cerebral palsy (CP) is a permanent condition resulting from a non-progressive injury of the immature brain, which affects posture and movement, and may be accompanied by disturbances of cognition, perception, sensation, behavior, epilepsy, among others. Children and adolescents with this condition are more likely to develop oral diseases such as tooth decays, periodontal disease, bruxism and malocclusion. In this context, the objective of the present study was to evaluate the oral health conditions of individuals with cerebral palsy, as well as the perception of their caregivers regarding the oral health of children and adolescents, and whether these conditions are associated with the motor impairment of these individuals. An observational cross-sectional study was carried out from February 2017 to August 2017 in three reference centers in the treatment of individuals with CP in the central region of the state of Rio Grande do Sul, Brazil. The sample was composed by 35 children and adolescents with CP and their caregivers. The motor function was evaluated through the application of two instruments, GMFCS and GMFM88. For the assessment of oral health, indexes such as DMFT, IPV, Malocclusion, Dental Age, pH, Buffering Capacity, and Saliva Flow were evaluated. A semi-structured questionnaire with open and closed questions was used to evaluate socio-demographic data and the caregiver's perception regarding oral health. In this study, 65.7% of the children and adolescents were quadriplegic, 88.6% with spastic tone, the mother being their main caregiver and the main responsible for the oral hygiene. It is possible to observe a significant association (p < 0,05) between GMFCS categorized according to locomotion dependence and the presence of malocclusion, but not with gross motor function (GMFM88). It has been found that patients with altered dental age have a lower GMFM88 index than those with dental age within the normal range. In the assessment of the perception of oral health, caregivers of quadriplegic patients, wheelchair users and with greater impairment of gross motor function (GMFM88) perceive more oral alterations. However, it can be concluded that malocclusion and dental age are associated with gross motor function (GMFCS and GMFM88) and dental caries has been associated with better GMFM scores88. / A paralisia cerebral (PC) é uma condição permanente, resultante de uma lesão não progressiva do encéfalo imaturo, que afeta a postura e o movimento, podendo estar acompanhada de distúrbios de cognição, percepção, sensação, comportamento, epilepsia, entre outros. Crianças e adolescentes com essa condição tem maior propensão a desenvolverem doenças bucais como cárie dentária, doença periodontal, bruxismo e má oclusão. Nesse contexto, o objetivo do presente trabalho foi avaliar as condições de saúde bucal de indivíduos com paralisia cerebral, bem como a percepção dos seus cuidadores em relação à saúde bucal das crianças e adolescentes e se estas condições estão associadas com o comprometimento motor desses indivíduos. Foi realizado um estudo transversal observacional no período de fevereiro de 2017 a agosto de 2017 em três centros de referência em tratamento de indivíduos com PC na região central do estado do Rio Grande do Sul, Brasil. A amostra foi composta por 35 crianças e adolescentes com PC e seus cuidadores. A função motora foi avaliada através da aplicação de dois instrumentos, o GMFCS e o GMFM88. Para a aferição da saúde bucal foram avaliados os índices de CPOD, IPV, Má oclusão, Idade dentária, pH, Capacidade de tampão e Fluxo da saliva. Para avaliação de dados sócio-demográficos e percepção do cuidador em relação à saúde bucal foi utilizado um questionário semi-estruturado com perguntas abertas e fechadas. No presente estudo 65,7% das crianças e adolescentes apresentaram-se quadriplégicas, 88,6% com tônus espástico, sendo a mãe seu principal cuidador e o principal responsável pela higienização bucal. Pode-se verificar uma associação significativa (p < 0,05) entre o GMFCS categorizado de acordo com a dependência para locomoção e a presença de má oclusão, mas não com a função motora grossa (GMFM88). Verificou-se que pacientes com idade dentária alterada apresentam o índice GMFM88 menor do que os que apresentam idade dentária dentro dos padrões normais. Na avaliação da percepção da saúde bucal, cuidadores de pacientes quadriplégicos, cadeirantes e com maior comprometimento da função motora grossa (GMFM88) percebem mais alterações bucais. Contudo pode-se concluir que má-oclusão e idade dentária estão associadas com a função motora grossa (GMFCS e GMFM88) e cárie dentária foi associada a melhores escores de GMFM88.

Orientador: Maria da Consolação Gomes Cunha Fernandes Tavares / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Física / Made available in DSpace on 2018-08-18T10:27:09Z (GMT). No. of bitstreams: 1 Castillo_AndreaAmaral_M.pdf: 1424495 bytes, checksum: 2e616dc1accf2266891ba1011fc14c1e (MD5) Previous issue date: 2011 / Resumo: A Imagem Corporal foi conceituada por Paul Schilder (1999) como a representação mental do corpo. Neste conceito ele aponta para uma abordagem sistêmica dos aspectos fisiológicos, psíquicos, sociais e culturais no processo dinâmico da expressão singular da identidade corporal. Em seu livro "The Image and appearance of humam body", publicado em 1935, Schilder chama a atenção para a relação entre o Tônus Muscular e a Imagem Corporal num capítulo exclusivo sobre o tema. Ressaltou que a Imagem Corporal era tracionada em direção ao Tônus Muscular uma vez que a ação de um único segmento corporal é capaz de colocar o corpo como um todo em uma nova relação com o ambiente. No entanto esta relação não se encontra sistematizada e valorizada dentro das diversas áreas do saber e tem sido pouco abordada nas pesquisas em Imagem Corporal. O foco direcionado ora ao Tônus Muscular, ora à Imagem Corporal implica muitas vezes num entendimento fragmentado capaz de desconsiderar a singularidade do indivíduo e/ou o dinamismo neurofisiológico na sua relação com o meio e com o outro. Assim a proposta deste estudo é sistematizar e analisar o conhecimento sobre o Tônus Muscular nas perspectivas de Charles Scott Sherrington cujo foco se apóia na Ação Reflexa; de Henry Head, que apresenta o Modelo Postural como a base para as pesquisas em Imagem Corporal; e da Neurociência, que propõe análises do comportamento humano na relação com o ambiente. Dentre as inúmeras contribuições feitas por Charles Scott Sherrington, foi a perspectiva da Ação Integrativa do sistema nervoso que trouxe um novo entendimento ao meio científico da época. Ao considerar a ação reflexa como uma resposta adaptativa do organismo, Sherrington encontrou no Tônus Muscular o exemplo explícito de um processo integrativo cuja proposta é manter a postura do organismo contra a gravidade. Henry Head influenciado por esse novo olhar, e inquieto com suas observações clínicas tornou-se o próprio objeto experimental numa investigação sobre os tipos de sensibilidade. A partir dos resultados de suas pesquisas e apoiado nas idéias e conceitos de Sherrington, Head propõe a existência de um Modelo Postural como uma medida de referência sobre a qual o corpo se ajusta constantemente através das variações do Tônus Muscular. Estas medidas são então registradas dentro de um esquema plástico de representação mental da postura e do movimento. A neurociência intensifica suas investigações sobre o organismo dentro do contexto do ambiente onde um é capaz de influenciar o outro. Com isso abriu-se uma nova perspectiva acerca do Tônus Muscular e o comportamento humano. As descobertas sobre a participação do fuso neuromuscular na elaboração da Imagem Corporal, as alterações mecânicas que implicam em alterações sensoriais e a ação segmentar que se propaga ao longo de todo o corpo trazem contribuições importantes que reforçam a relação íntima entre o Tônus Muscular e a representação mental do corpo. A partir deste estudo espera-se trazer uma reflexão mais profunda sobre o papel do Tônus Muscular e contribuir para futuras pesquisas e estudos sobre a Imagem Corporal / Abstract: Paul Schilder (1999) defined Body Image as the mental representation of the body. In this concept, he points out to a systemic approach of physiological, psychological, social and cultural aspects in the dynamic process of the body image unique expression. In his book "The Image and appearance of human body", published in 1935, Schilder draws attention to the relationship between Muscle Tonus and Body Image, dedicating a whole chapter to this theme. He emphasized that Body Image was pulled towards Muscle Tonus, since the action of a single body segment can place the whole body in a new interaction with the environment. However, this relationship has not been schematized and given the proper value by different areas of knowledge and it has been little addressed in studies about Body Image. Changing the focus from Muscle Tonus to Body Image back and forth can frequently lead to a fragmented understanding which may disregard each individual particularity and/or the neurophysiological dynamics in the individual interaction with the environment and others. Hence, this study aims to systematize and discuss the knowledge about muscle tone, as seen by Charles Scott Sherrington who focus on Reflex Action; by Henry Head, who presents Postural Model as fundamental for Body Image researches; and by Neuroscience, which suggests the study of human behavior and its relation with the environment. One of the several contributions by Charles Scott Sherrington, the Integrative Action of the nervous system brought a new understanding to the scientific community at the time. By considering reflex action as an adjustable response of the body, Sherrington saw the Muscle Tonus as a clear example of an integrative process which aims to keep the body posture against gravity. Henry Head was influenced by this new approach, and, out of a strong urge towards his clinical observation, became his own experiment subject on his study about sensitivity types. Supported by the results of his own researches and backed by Sherrington's concepts and ideas, Head suggests that there is a Postural Model acting as a reference measure which the body constantly fits into according to Muscle Tonus variations. These measures are registered within a scheme of posture and movement representations. Neuroscience stresses the focus of studies about the body within a context where one causes an impact on the other, bringing out a new outlook for Muscle Tone and human behavior. Findings about neuromuscular fuse participation in Body Image building, mechanical changes which cause sensorial changes and the segmental action which spreads throughout the body play an important role and corroborate the close relationship between Muscle Tonus and body mental representation. This study is expected to bring up a more comprehensive discussion on the role of Muscle Tonus and to enhance future researches and studies on Body Image / Mestrado / Atividade Fisica Adaptada / Mestre em Educação Física

Sammanfattning Titel: Finns det ett samband mellan bullernivå och spänning i m. trapezius? Bakgrund: Företaget Saint-Gobain Sekurit Scandinavia AB tillverkar bilglas. I deras arbetsmiljöarbete ingår konceptet Smart Workplace. En del av det arbetet behandlar belastningsergonomi och bullerexponering. Syfte: Syftet med examensarbetet var att se om det fanns en korrelation mellan minskat buller och minskad muskelspänning. Målet var att kunna påvisa om operatörer i det aktuella fallet ute i produktion fick minskad muskelaktivitet i m. trapezius eller inte, när bullernivån minskar. Dessutom undersöktes vilka åtgärdsmöjligheter som fanns, kopplat till Smart Workplace, för att minska bullerexponeringen. Teori: Sambandet mellan bullerexponering och spända muskler är relativt outforskat och få forskningsstudier har gjorts. Det finns dock visade samband mellan bullerexponering och hormoner, blodtryck samt hjärtfrekvens. Metod: Tretton operatörer som arbetade vid linje 5230 mättes med EMG-mätare på en nackmuskel på höger sida medan de drog höger hand längs övre kanten på ett bilglas. Arbetsplatsen valdes ut i samråd med företaget. Arbetsmomentet var likadant som operatörer normalt utförde på arbetsplatsen. Mätning utfördes i sex minuter, halva tiden utan hörselkåpor och halva tiden med hörselkåpor. I samband med EMG-mätningarna utfördes även ljudnivåmätning för att säkerställa att ljudnivån var densamma vid alla mätningar. Resultat: Resultatet visade att det inte gick att påvisa att minskad ljudtrycksnivå ger minskad muskeltonus. Däremot visade resultatet på de lägsta 10 % av RVE-värdena att det blev en skillnad om operatörerna hade hörselkåpor eller inte vilket betyder att det inte går att utesluta att det kan finnas ett samband mellan minskat buller och minskad muskeltonus. Den dagliga bullerexponeringsnivån på linje 5230 var 84,7 (± 4,2) dB(A). Kåporna dämpade mer än nödvändigt jämfört med den bullerexponering som operatörerna utsattes för. Diskussion: Felkällor som noterades var författarnas inverkan på operatören vid mätningen, svårigheter med EMG-utrustning, felaktig kalibrering, placering av EMG-elektroderna, underhudsfett och hudmotstånd samt avläsning av diagram. Vidare studier bör utforska området ytterligare då inte så många studier finns inom området. Intressant fokus hade varit mätning av muskelspänning under längre tid samt med högre bullerexponering. Slutsats: Denna studie kan inte påvisa att minskad ljudtrycksnivå ger minskad muskeltonus. Området kring linje 5230 hade en daglig bullerexponeringsnivå på 84,7 (± 4,2) dB(A) vilket innebär att åtgärder måste sättas in för att minska bullernivån både för att klara lagkraven men också för att nå målen med Smart Workplace. För framtida arbetsplatser på SG Sekurit Scandinavia är det avgörande att kraven på maximala bullernivåer finns med som ett kriterium vid upphandling. Om man inte klarar nivåerna för bullerexponeringen är det viktigt att beräkning enligt HML-metoden genomförs för att kunna välja rätt hörselskydd som ger korrekt dämpning. / Abstract Title: Is there a correlation between noise level and tension in m. trapezius? Background: The company Saint-Gobain Sekurit Scandinavia AB manufactures car glass. Their work environment improvement includes a concept called Smart Workplace. A part of that work contains ergonomics and noise exposure. Aim: The aim of this master thesis was to see if there was a correlation between reduced noise level and reduced muscle tension. The goal was to demonstrate if the operators in the studied environment in production got reduced muscle tension in m. trapezius or not, when the noise level was reduced. It was also investigated which possibilities for actions there was, according to Smart Workplace, to reduce noise exposure. Theory: The correlation between noise exposure and muscle tension is relatively unexplored. Few research studies have been done on this topic. However research has shown correlation between noise exposure and hormones, blood pressure and heart rate. Method: Thirteen operators who worked on the line 5230 were measured with EMG-equipment on a neck muscle on their right side while they moved the right hand over the upper side of a car glass. The workstation was chosen in consultation with the company and the work situation was the same as the one the operators performed in their normal work. The EMG-measurements took place during six minutes, half the time without earmuffs and half the time with earmuffs. In connection with the EMG-measurements the noise level was measured to ensure that the noise level was the same. Results: The results showed that there is no correlation between reduced noise level and decreased muscle tonus. However the result from the lowest 10 percent of the RVE-measurements showed a difference if the operators had earmuffs or not, which means that a correlation between reduced noise and reduced muscle tonus can`t be excluded. The daily noise exposure level at line 5230 was 84,7 (± 4,2) dB(A). The attenuation of the earmuffs was too high compared to the noise level the operators were exposed to. Discussion: Error sources was the writers influence on the operators during the measurements, difficulties with the equipment during the EMG-measurement, wrong calibration, the location for the EMG-electrodes, fat under the skin and resistance on the skin and reading of the diagram. Further studies should be done to investigate this topic more since there are few studies in this field. An interesting focus would be to measure during a longer period of time or with higher noise levels. Conclusion: This study cannot show that reduced noise level gives reduced muscle tension. The area around line 5230 had a daily noise exposure level of 84,7 (± 4,2) dB(A) which means that action must be taken to reduce the noise level both in order to fulfill legal requirements and also to reach the goals for Smart Workplace. For future workplaces at SG Sekurit Scandinavia it is crucial that the requirement for maximum noise level is a criteria from the start. If the company cannot meet the requirements on noise levels it is important that calculations are done according to the HML-method to be able to choose the right hearing protectors.