Alunos canhotos de odontologia da cidade de Uberlândia: perfil, ergonomia e dores osteomusculares / Left-handed dentistry students in the city of Uberlândia: profile, ergonomics and muscular pain

Os dentistas são um grupo de alto risco para o desenvolvimento de doenças de desordens musculoesqueléticas e tendo em vista que o sistema de produção industrial desenvolve produtos que atendem a maioria da população destra, os estudantes canhotos precisam se adequar a uma formação acadêmica, usando instrumentais, cadeiras odontológicas eoutros objetos projetados para destros. O presente trabalho teve como objetivo a coletade informações sobre os canhotos nos cursos de Odontologia da cidade de Uberlândia ­Minas Gerais. Foram incluídos todos os alunos canhotos matriculados no ano de 2022 e que estavam cursando ou já cursaram disciplinas com atividades laboratoriais ou clínicas. Questionários foram aplicados para identificação do perfil, das dificuldades, da ergonomia e das dores osteomusculares dos alunos canhotos em suas atividades. Os dados foram em seguida tabulados e passaram por análise estatística. Da quantidade total de alunos das três instituições (n=1.578), foram entrevistados 45 (2,8%) alunos canhotos, sendo a maioria feminina (80%), na qual identificou-se um posicionamento inadequado do operador canhoto quando comparado ao preconizado pela ISO-FDI, além da limitação de movimento na presença de auxiliar (82,2%). Os locais com maior frequência de dor/desconforto foram: pescoço (79%), costas superior esquerda (63%) e inferior esquerda (61%) e punhos/ mãos esquerda (56%). A intensidade da dor variou entre alguma, moderada e bastante. O impedimento de realizar atividades diárias foi relatado por 17% dos alunos (n=7) e destes somente 1 buscou atendimento médico. Não houve diferença estatística na comparação entre instituição pública e privada. Diante dos resultados, concluiu-se que os canhotos representam minoria dos alunos de Odontologia e apresentam várias regiões de dor/ desconforto devido às adaptações e posturas erradas durante os atendimentos. Apesar de grande parte apresentar dor, poucos tiveram impedimento de atividades rotineiras ou procuraram ajuda médica(AU)

Dentists are a high risk group for the development of musculoskeletal disorders and considering that the industrial production system develops products that serve the majority of the right-handed population, lefthanded students need to adapt to an academic training, using instruments, dental chairs and other objects designed for right-handers. This study aimed to collect information about left-handers in Dentistry courses in the city of Uberlândia - Minas Gerais. All left- handed students enrolled in the year 2022 and who were taking or had taken courses with laboratory or clinical activities were included. Questionnaires were applied to identify the profile, difficulties, ergonomics and musculoskeletal pain of left-handed students in their activities. The data were tabulated and then undergo statistical analysis. Of the total number of students from the three institutions (n=1,578), 45 (2.8%) left-handed students were interviewed, the majority being female (80%), in which an inadequate positioning of the left-handed operator was identified when compared to the recommended one by ISO-FDI, in addition to limitation of movement in the presence of an assistant (82.2%). The places with the highest frequency of pain/discomfort were: neck (79%), upper left back (63%) and lower left back (61%) and left wrists/hands (56%). The intensity of pain varied between some, moderate and a lot. The impediment to carrying out daily activities was reported by 17% of the students (n=7) and of these, only 1 sought medical attention. There was no statistical difference when comparing public and private institutions. In view of the results, it was concluded that left-handers represent a minority of dentistry students and have several regions of pain/discomfort due to adaptations and wrong postures during consultations. Although most of them had pain, few were prevented from performing routine activities or sought medical help(AU)

Prevalence of work-related lower back pain and psychosocial impacts in dentistry

Background: In dentistry, musculoskeletal (MSK) pain creates a significant occupational health hazard jeopardizing the efficient delivery of care to the patients. There are several factors linked to the job that contribute to the higher incidence of MSK pain among dental practitioners. Uncomfortable postures and movements, frequent and prolonged working hours, the amount of time spent with each patient are some of the work-related factors of work related lower back pain which need to be addressed to prevent the disabling effects in the long run. The study aims to evaluate the prevalence of work related lower back pain and significance of associated risk factors in Saudi Arabia. Methods: Self-administered questionnaire were distributed to 384 dental practitioners who were working in various clinics in Saudi Arabia. This survey had four sections with questions related to demographic data, clinical practice, ergonomic principles, and psychosocial impacts. Descriptive statistics including chi-square analyses and associated significance were performed. Results: The relationship between age, years of experience and back pain among dental professionals was found to be significant with back pain lasting between 1 to 7 days in 34.2% among the participants. Older individuals with more experience tend to use back braces, analgesics, and physiotherapy more often. The cumulative prevalence of back pain in the study was 42.2%, with the majority of participants working for 2-8 hours per day. Various types of back strain injuries were observed across age groups and experience levels. Psychosocial impacts like job dissatisfaction and missed workdays were more pronounced in older individuals. The type of dental work and sitting posture also influenced back pain in specific age groups with significant associations observed. Conclusions: Our study sheds light on the significant issue of MSK pain among dental practitioners in Saudi Arabia, emphasizing its complex nature involving physiological, ergonomic and psychosocial factors. Found high prevalence of MSK pain, especially lower back discomfort, linked to factors like sitting postures and long working hours.

Integrated analysis of health dynamics in esports: injury profiles, intervention strategies, and health optimization protocols

The rapidly expanding realm of Electronic Sports (eSports) has captivated global attention, blurring the lines between virtual entertainment and traditional athletics. As participation in eSports continues to rise, these competitive gaming platforms are increasingly recognized as legitimate sports. However, with this surge in participation, there's a simultaneous increase in the susceptibility to health hazards, spanning both physical and psychological domains. Musculoskeletal injuries, caused by extended sedentary postures and repetitive motions, afflict eSports athletes, resulting in discomfort in the wrists and hands, alongside back and neck problems. The prolonged exposure to screens predisposes participants to vision-related concerns, highlighting the imperative of addressing ocular health within the eSports community. Simultaneously, the intense cognitive demands and competitive pressures exacerbate mental health challenges, resulting in depression and anxiety among players. Similar to traditional athletes, eSports competitors need appropriate protocols to minimize injury risks, alongside access to medical intervention to manage potential health hazards. This review comprehensively analyses the health dynamics of eSports, elucidating injury profiles, intervention strategies, and health optimization protocols essential for safeguarding the well-being of eSports athletes and enhancing awareness within the eSports community.

Síndrome visual informático en pacientes menores de 35 años

Introducción: El síndrome visual informático o fatiga visual digital es una enfermedad causada por el cansancio ocular que provoca el pasar mucho tiempo frente a una pantalla. Objetivo: Diagnosticar el síndrome visual informático en pacientes menores de 35 años atendidos en la consulta de refracción. Métodos: Se realizó un estudio descriptivo prospectivo y transversal de pacientes atendidos en la consulta de refracción del Policlínico Especialidades del Hospital Provincial Docente Clínicoquirúrgico Saturnino Lora, durante el periodo de abril a junio de 2022. Resultados: Predominaron los pacientes en las edades comprendidas entre 26 y 35 años y del sexo femenino; los síntomas más frecuentes fueron el cansancio visual, ardor ocular, sensación de ojo seco, visión borrosa de cerca, ojo rojo y el dolor de cabeza después del esfuerzo visual. Los dispositivos digitales más usados fueron el celular y la computadora con un tiempo de uso de una a tres horas, destacándose este último con un tiempo superior a 4 horas. Los defectos refractivos constituyeron la principal causa de limitaciones visuales. Los pacientes con síndrome visual informático y alguna ametropía sin corrección fueron los que mayor cantidad de síntomas tuvieron, seguidos de los pacientes corregidos inadecuadamente. Conclusiones: Este síndrome afecta en gran medida a la población más joven. El adecuado interrogatorio y la incorporación de los procedimientos correctos en el estudio optométrico diario permitió el diagnóstico de tal síndrome en los pacientes atendidos y la corrección óptica pertinente.

Introduction: Digital visual syndrome or digital visual fatigue is a disease caused by the ocular fatigue provoked by spending much time in front of a screen. Objective: To diagnose the digital visual syndrome in patients under 35 years assisted in the refraction service. Methods: A prospective descriptive and cross-sectional study of patients assisted in the refraction service of the Specialties Polyclinic in Saturnino Lora Teaching Clinical Surgical Provincial Hospital, was carried out from April to June, 2022. Results: There was a prevalence of patients aged 26 and 35 and female sex; the most frequent symptoms were visual fatigue, ocular burning, dry eye sensation, closely blurred vision, red eye and headache after visual effort. The most used digital devices were the cellphone and the computer with a time of use from one to three hours, with emphasis in the last one with more than 4 hours. The refractive defects constituted the main cause of visual limitations. The patients with digital visual syndrome and some type of ametropia without correction were those with more symptoms, followed by the patients inadequately corrected. Conclusions: This syndrome affects the youngest population to a great extent. The appropriate interrogation and the incorporation of correct procedures in the daily optometric study allowed the diagnosis of such a syndrome in the assisted patients and the pertinent optic correction.

Assessment of awareness, attitude, knowledge and application towards dental ergonomics and musculoskeletal disorder among dental students and professionals in Ahmedabad

Background: Dental ergonomics, the science of optimizing the workplace for dental professionals, is essential for preventing musculoskeletal disorders (MSDs) and ensuring the long-term health of dental practitioners. Methods: A cross-sectional survey aimed to assess the awareness and attitude of dental students and professionals towards dental ergonomics, with the collected data subsequently subjected to rigorous statistical analysis. Results: A 51% of dental students and 78% of dental professionals were aware about dental ergonomics. Only 12% of the dental students have attended a course regarding dental ergonomics, 73% of the dental professionals among study population have experienced musculoskeletal pain due to dental practice. Conclusions: The survey revealed that dental students exhibited lower awareness of dental ergonomics compared to dental professionals, with a notable discrepancy in the implementation of ergonomic principles. Additionally, a significant prevalence of pain related to MSDs was observed among the dental professionals surveyed.

Ergonomic evaluation on typical postures of express couriers handling small parcels by Jack simulation software / 环境与职业医学

Background With the rapid development of China's express delivery industry, small parcel couriers generally report overtime, excessive intensity, and high work load, and are at a high risk of developing work-related musculoskeletal disorders (WMSDs). Using questionnaires to conduct research on WMSDs-associated postures may contain unavoidable subjectivity, and the simulation methods can quantitatively evaluate WMSDs, boasting advantages such as high efficiency and low cost, and become a research development trend. Objective To conduct ergonomic evaluation of typical postures of express couriers handling small parcels using a simulationmethod. Methods SolidWorks software was used to establish a geometric model of a parcel (530 mm depth × 290 mm width × 370 mm height), a geometric model of an express carriage (1.4 m depth × 0.9 m width × 1.17 m height), and a geometric model of a delivery truck (1.7 m height). These models were imported into Jack software, and the weight of parcel was set at 20 kg. The digital model of a male express courier was established in Jack software. A typical parcel handling task was defined as standing on one side of the express carriage and bimanually placing parcels at four different heights (top, upper half, middle, and bottom of the carriage) combined with three horizontal positions (outer side, center, and inner side of the carriage). The visual field and reach zones tools in Jack software were used to determine whether the parcels can be seen and touched by the express courier, and determine the operational posture of the express courier at their ends of motion ranges. The Ovako working posture analysis system (OWAS) and rapid upper limb assessment (RULA) tools in Jack software were used to evaluate postures applied at typical vertical and horizontal distances. Results The maximum horizontal and vertical gaze fields effectively covered the area where the parcels were located, but some areas were not within the optimal field of view. When the horizontal distance between the parcel and the express courier exceeded 48 cm, the express courier was not able to directly reach it and had to adjust his standing position or posture to perform the task. The OWAS analysis found that when the express item was placed at the top, upper section, or middle of the carriage, the risk level of the courier's work posture was level 1, suggesting a normal posture. When the parcel was placed at the inner side bottom of the carriage, the courier needed to bend his knees and lower back, and the highest risk level for the posture was level 3, which had harmful effects on the musculoskeletal system, and correctiveactions were required as soon as possible. The other two work postures placing the parcel elsewhere in the bottom were graded level 2, which may cause harm to the musculoskeletal system , and corrective actions were required in the near future. The RULA analysis found that the risk of the posture was level 2 for handling the parcel in the upper or middle of the carriage, and level 3 for handling the parcel at the top or bottom of the carriage. When the parcel was placed at the bottom of the carriage, as the horizontal distance between the express item and the courier increased, the risk of posture increased to level 3 or above, and the risk reached level 4 for the parcel located at the innermost side of the carriage. Conclusion There is a significant risk of WMSDs in manually handling parcels at different heights and horizontal positions. The risk levels of associated postures are elevated from low to high following the express item pleased at the middle, upper, bottom, and top of the carriage and the extension of horizontal distances, if the express item is placed at the bottom of the carriage, between the courier and the parcel. By installing doors on both sides of the express delivery carriage, it is possible for the express courier to adjust his standing position and provide a vertical motion range, ensuring best visual field and reach zones.

Ergonomic Risk Factors and Job Performance of Electronic Employee in Malaysia

@#Introduction: Ergonomics is the scientific study of the interactions between humans and other elements of a system to improve human well-being and overall system performance. In larger scope ergonomics examines human behavioral, psychological, and physiological capabilities and limitations. It has given a huge impact on the workers comfort which directly affects the work efficiency and productivity. In Malaysia, the electronics industry is the leading industry in the manufacturing sector and one of the largest employers. This study was conducted to examine the relationship between ergonomics factors and job performance among employees in electronics industry. Material and Method: A total of 155 employees in electronic industry were involved as respondents in this study. A cross-sectional study was conducted using self-administered questionnaires consisting of sections on physical ergonomics, cognitive ergonomics, and organizational ergonomics and job performance. The data were analysed using SPSS version 25, and descriptive statistics, person correlation and multiple liner regressions were used to identify the factors associated with job performance. Results: The findings showed that there is a significant relationship between ergonomics factors (physical ergonomics, cognitive ergonomics, and organizational ergonomics) and employee performance with p<0.05. While the multiple linear regression analysis found that the most contributing ergonomics factors was physical ergonomics that significantly affects job performance in the electronics industry in Malaysia. Conclusion: Ergonomics factors can be used to promote improved performance and productivity from the employees in the organization such as awareness training and education.

A contribuição da Ergonomia para a segurança no trabalho / Ergonomics contribution to occupational safety

Resumo Introdução: processos de alto risco com elevadas taxas de acidentes desafiam a segurança. Por outro lado, sistemas ultrasseguros conquistaram ótimos indicadores. Em ambos, a prevenção parece ter chegado a um limite - em um deles, porque parece impotente para gerar prevenção; no outro, porque foi tão bem-sucedida que parece impossível avançar. Objetivo: evidenciar a contribuição da Ergonomia em prol da segurança, nas situações descritas, suas possibilidades ainda por explorar, entre elas a Ergonomia de concepção na integração homem-máquina (sistemas informatizados). Método: análise comparativa dos achados oriundos de estudos ergonômicos em sistemas de produção com altas taxas de acidentes e sistemas ultrasseguros. Discussão: a análise da atividade dos motofretistas mostrou que existem alternativas de ação ainda não exploradas entre as relações de trabalho desfavoráveis e a percepção de inevitabilidade dos acidentes. Nos sistemas ultrasseguros, o aparente limite pode ser superado com os avanços recentes na análise da ação e cognição situadas e na construção de espaços de debate que permitam o retorno da experiência de campo. Em sistemas informatizados, as práticas de projeto colaborativo, que se valem da experiência dos trabalhadores para alimentar as dinâmicas de aprendizagem e a confiabilidade técnica, são possibilidades ainda pouco praticadas na Engenharia de Segurança.

Abstract Introduction: while high-risk processes with high accident rates challenge safety, High Reliability Organization (HRO) achieve excellent indicators. In both cases, prevention seems to have reached a limit. In the former, because it seems powerless to generate prevention; in the latter, because it has been so successful that it seems impossible to reach greater levels. Objective: to highlight the contribution of Ergonomics to safety in these situations, pointing out unexplored possibilities such as design Ergonomics in man-machine integration (computerized systems). Method: comparative analysis of findings from ergonomic studies on production systems with high accident rates and HRO. Discussion: analysis of the motorcycle freight drivers' activity revealed alternatives yet to be explored between unfavorable work relations and the perceived inevitability of accidents. The apparent limit of HRO can be overcome with recent advances in the analysis of situated action and cognition and by building debate spaces based on field experience. Collaborative design practices, which draw on worker experience to feed learning dynamics and technical reliability, remains a poorly explored possibility in Safety Engineering when it comes to computerized systems.

Ergonomía en endoscopia: visualización de una herramienta indispensable en endoscopia / Ergonomics in endoscopy, visualization of an indispensable tool in endoscopy

Endoscopic ergonomics, the study of the endoscopist's interaction with their work environment, aims to adapt tools and actions to their physical and psychological characteristics. Musculoskeletal disorders (MSDs) are highly prevalent among endoscopists (39-89%), mainly due to repetitive movements. This issue is exacerbated by pro- cedures such as EUS, ERCP, and third space endoscopy, which demand more time and instrument use. Despite knowing the risk factors, preventive and modification strategies are scarce in endoscopic centers and the industry. This is concerning, given the impact on health, work disability, and the functioning of endoscopy services. It is crucial to raise awareness and educate on this topic to improve the quality of life of endoscopists and the efficiency of services

La ergonomía endoscópica, que estudia la interacción del endoscopista con su entorno laboral, busca adaptar herramientas y acciones a sus características físicas y psicológicas. Los trastornos musculoesqueléticos (TME) son altamente prevalentes en endoscopistas (39-89%), principalmente debido a movimientos repetitivos. Esta problemática se intensifica con procedimientos como la EUS, ERCP y la endoscopia de tercer espacio, que de- mandan más tiempo y uso de instrumentos. A pesar de conocer los factores de riesgo, las estrategias preventivas y de modificación son escasas en centros endoscópicos y en la industria. Esto es preocupante, dado el impacto en la salud, la incapacidad laboral y el funcionamiento de los servicios de endoscopia. Es crucial visibilizar y educar sobre este tema para mejorar la calidad de vida de los endoscopistas y la eficiencia de los servicios

Ergonomics appraisals in operating rooms

Abstract This document presents the ergonomic assessments carried out by Spanish surgeons on the materials used within an operating room. With the objective of disseminating and raising awareness of the importance of ergonomics, this working group has compiled information from a previously conducted survey on musculoskeletal disorders associated with surgical work from the year 2022, obtaining feedback from 131 surgeons from 17 distinct specialties. A noteworthy 80.2 % of surveyed surgeons reported having experienced forced postures during surgery, and 96.9 % believe that their physical discomfort is a result of the posture adopted during operations. Such postures can result in the development of pathologies and may have a direct impact on work performance and even in extreme cases, it can lead to sick leave or early retirement. By providing their insights on electronic devices, surgical furniture, and instrumentation, surgeons can help identify areas for improvement in the practice of their profession.

Occupational health and safety management systems: a systemic approach / Sistemas de gerenciamento em saúde e segurança do trabalho: uma abordagem sistêmica

Abstract Risks are intrinsic to any human activity. Occupational Health and Safety Management Systems (OHSMSs) are mechanisms designed to mitigate risks, protect workers, and ensure productivity. This study aimed to support researchers' reflective analysis by examining scientific literature related to OHSMSs and identifying possibilities for future research with practical significance. Employing a qualitative approach, this systematic review was conducted using bibliographic procedures and action research. The intervention instrument ProKnow-C guided by a structured process from a constructivist perspective, was applied. A total of 3,130 studies were analyzed to select the bibliographic portfolio. The systemic analysis revealed that most articles neither demonstrate legitimacy nor consider companies' particularities. The paper advances theoretical knowledge of OHSMSs by assessing relevant studies in the field, identifying evolution patterns, and highlighting gaps. A research agenda is proposed to guide the development of future models. We conclude that the challenges of designing ad hoc OHSMSs and incorporating the decision-makers' knowledge throughout the process when addressed, have the potential to significantly contribute to the advancement of this field of knowledge.

Resumo Os riscos são intrínsecos a todas as atividades humanas. Os sistemas de avaliação de desempenho de saúde e segurança no trabalho (SADSSTs) são mecanismos projetados para lidar com riscos, proteger os trabalhadores e garantir produtividade. Este estudo objetivou apoiar a análise reflexiva dos pesquisadores com base na literatura científica relacionada aos SADSSTs, identificando possibilidades de pesquisas futuras de importância prática. Com abordagem qualitativa, esta revisão sistemática foi desenvolvida com a adoção de procedimentos bibliográficos e pesquisa-ação. Foi utilizado o instrumento de intervenção ProKnow-C, um processo estruturado orientado pela perspectiva construtivista. Um total de 3.130 estudos foi analisado para a seleção do portfólio bibliográfico. A análise sistêmica revelou que a maioria dos artigos não apresenta legitimidade, nem considera as particularidades das empresas. O artigo avança no conhecimento teórico dos SADSSTs avaliando os estudos relevantes na área e identificando padrões de evolução e lacunas. Propõe-se uma agenda de pesquisa para orientar o desenvolvimento de modelos futuros. Conclui-se que o desenvolvimento de um SADSST ad hoc, não genérico e concebido com o conhecimento do decisor em todo o processo, permanece sendo um desafio e tem potencial para contribuir para o avanço deste campo do conhecimento.

Ergonomic risks and musculoskeletal pain in hospital cleaning workers: Convergent Care Research with mixed methods / Riesgos ergonómicos y dolor musculoesquelético en trabajadores de limpieza hospitalaria: Investigación Convergente Asistencial con métodos mixtos / Riscos ergonômicos e dor musculoesquelética em trabalhadores de limpeza hospitalar: Pesquisa Convergente Assistencial com métodos mistos

Objective: to analyze exposure to ergonomic risks and the occurrence of musculoskeletal pain in workers in the Hospital Cleaning Service. Method: Convergent Care Research, with data production designed using mixed methods, implemented with 149 hospital cleaning workers. The methodological strategy of the convergent parallel project was employed, using observation, photographic records, questionnaires and convergence groups. The results were integrated through joint display. Data analysis with descriptive and inferential statistics and content analysis. Results: the mixing of data highlighted the multifactorial nature of exposure to ergonomic risks (uncomfortable work postures; repetitive movements; prolonged orthostatism; use of equipment not adapted to the psychophysiological needs of workers) and musculoskeletal pain in the population investigated. The latter was prevalent in the lumbar spine, ankles or feet, wrists or hands, thoracic spine and shoulders. The concept of ergonomic risk was expanded and was influenced by the psychosocial aspects of work. Conclusion: the workers investigated are exposed to modifiable multifactorial ergonomic risks related to musculoskeletal pain. It is possible to promote innovations and teaching-learning actions to minimize them, such as the continuing education program, collectively constructed with recommendations for improvements.

Objetivo: analizar la exposición a riesgos ergonómicos y la ocurrencia de dolor musculoesquelético en trabajadores del Servicio de Limpieza Hospitalaria. Método: investigación Convergente Asistencial, con producción de datos diseñada mediante métodos mixtos, realizada con 149 trabajadores de limpieza hospitalaria. Se utilizó la estrategia metodológica del proyecto paralelo convergente, basada en observación, registros fotográficos, cuestionarios y grupos de convergencia. Los resultados se integraron mediante joint display . Análisis de datos con estadística descriptiva e inferencial y análisis de contenido. Resultados: la combinación de datos puso de relieve la naturaleza multifactorial de la exposición a riesgos ergonómicos (posturas de trabajo incómodas; movimientos repetitivos; ortostatismo prolongado; uso de equipos no adaptados a las necesidades psicofisiológicas de los trabajadores) y al dolor musculoesquelético en la población investigada. Este último prevalecía en la columna lumbar, tobillos o pies, puños o manos, columna torácica y hombros. El concepto de riesgo ergonómico se amplió y estuvo influenciado por los aspectos psicosociales del trabajo. Conclusión: los trabajadores investigados están expuestos a riesgos ergonómicos multifactoriales modificables relacionados con el dolor musculoesquelético. Es posible promover innovaciones y acciones de enseñanza-aprendizaje para minimizarlos, como el programa de educación continua, construido colectivamente con recomendaciones de mejora.

Objetivo: analisar a exposição aos riscos ergonômicos e a ocorrência de dor musculoesquelética em trabalhadores do Serviço Hospitalar de Limpeza. Método: pesquisa Convergente Assistencial, sendo a produção de dados delineada com métodos mistos, realizada com 149 trabalhadores de limpeza hospitalar. Utilizou-se a estratégia metodológica do projeto paralelo convergente, baseada em observação, registros fotográficos, questionários e grupos de convergência. Os resultados foram integrados por meio de joint display . Análise de dados com estatística descritiva e inferencial e análise de conteúdo. Resultados: a mixagem dos dados evidenciou o caráter multifatorial da exposição aos riscos ergonômicos (posturas de trabalho desconfortáveis; movimentos repetitivos; ortostatismo prolongado; utilização de equipamentos não adaptados às necessidades psicofisiológicas dos trabalhadores) e à dor musculoesquelética na população investigada. Esta última foi prevalente na coluna lombar, tornozelos ou pés, punhos ou mãos, coluna torácica e ombros. O conceito de risco ergonômico foi ampliado e sofreu influência dos aspectos psicossociais do trabalho. Conclusão: os trabalhadores investigados estão expostos aos riscos ergonômicos multifatoriais modificáveis relacionados à dor musculoesquelética. É possível promover inovações e ações de ensino-aprendizagem para minimizá-los, como o programa de educação continuada, construído coletivamente com recomendações de melhorias.

Resgate histórico documental-legislativo das perícias médico-previdenciárias e o papel dos médicos peritos na sua institucionalização / Documentary-legislative historical review of social security medical examinations and the role of medical experts in its institutionalization

Este estudo descritivo parte de pesquisa bibliográfica e documental, visando esboçar uma gênese e constituição das Perícias Médico-Previdenciárias (PMP) no país e buscando ressaltar seu conteúdo crítico. Foi empreendida então a Análise de Conteúdo para categorizar os núcleos temáticos em periodizações históricas que, a partir do método dialético, nos possibilitaram conjugar uma análise diacrônica e sincrônica do papel, do lugar e da função social das PMP. Desvela-se de sua institucionalização legal uma postura historicamente conservadora e antitrabalhadora, que sustenta a ação pericial no âmbito do Instituto Nacional do Seguro Social (INSS) e nos permite afirmar que sequer tal campo de poder têm relação com qualquer resolução dos problemas em Saúde do Trabalhador (ST), pois o paradigma da causalidade dos agravos à saúde se dá pela precedência das condições de trabalho em uma visão (a)histórica e descontextualizada das relações econômicas, políticas, ideológicas e sociais que influem nos nexos entre trabalho e saúde/doença

The descriptive study, based on bibliographic and documentary research, outlines the genesis and institutionalization of Social Security Medical Experts (PMP) in Brazil, highlight its critical content. Content Analysis categorized the thematic cores into historical periods that, based on the dialectical method, allowed us to combine a diachronic and synchronic analysis of the role, place, and social function of PMP. Their legal institutionalization reveals a historically conservative and anti-worker(s) stance that supports the expert action within the National Institute of Social Security (INSS), allowing us to affirm that such a field of power has no intention to solve occupational health issues, for the causality paradigm of health problems is given a priori by the working conditions under an ahistorical and decontextualized view of economic, political, ideological and social relations that influence the link between work and health/disease

Ergonomia en actividades académicas desde casa

Introducción: A consecuencia de la emergencia sanitaria por el virus SARS-CoV2, las actividades académicas migraron de forma repentina a un entorno de trabajo remoto; esto provocó que los hogares de todo el mundo se convirtieran en el asentamiento urgente de las estaciones de trabajo académico. La ergonomia como disciplina científica cobra relevancia al ser un aliado subsanador para mitigar los riesgos asociados con la aparición de lesiones musculoesqueléticas. De acuerdo con la memoria estadística del Instituto Mexicano de Seguridad Social, IMSS1, en el primer año de pandemia de COVID-19 se registraron 30 860 atenciones por lesiones en la región de manos y muñecas, 9696 en la zona de cabeza y cuello, 6251 dorsopatías y 1673 atenciones por astenopia a jóvenes de entre 18 a 29 años que desarrollaban actividades escolares. Objetivo: En este sentido, se aborda la presente investigación para conocer la composición de los espacios de trabajo académico en casa y analizar si existen factores o elementos que incidan en el riesgo de lesiones musculoesqueléticas en los estudiantes del nivel superior. Metodología: A través de un modelo de ecuaciones estructurales que cuenta con el constructo latente de las posibles lesiones (PL) en manos, espalda, piernas, cabeza, vista, oído, agotamiento físico y la respiración, las variables observables se atribuyen a los espacios utilizados para las actividades académicas en casa, muebles y equipos, Condiciones y Medio Ambiente (CyMAT). Resultados y discusión: Se encontró que un mal diseño de la estación de trabajo académico en casa, aunado a la utilización inadecuada de los muebles y equipos, aumenta la posibilidad de presentar síntomas asociados con las LMEs y, por tanto, daños en la salud del estudiante. Conclusión: La mediación de las estaciones de trabajo a través de la implementación de elementos ergonómicos mejora de forma sustancial la calidad de trabajo académico en casa, y hace evidente la importancia de la ergonomía como disciplina científica.

Introduction: As a result of the health emergency of the SARS-CoV2 virus, academic activities suddenly migrated to a remote work environment, causing homes around the world to become the urgent settlement of academic workstations. Ergonomics as a scientific discipline becomes relevant as it is a healing ally to mitigate the risks associated with the appearance of musculoskeletal injuries. According to the statistical report of the Mexican Institute of Social Security, IMSS1, in the first year of the COVID 19 pandemic, 30,860 care for injuries in the hands and wrists region, 9,696 in the head and neck area, 6,251 dorsopathies and 1,673 care for asthenopia were registered to young people between 18 and 29 years old who develop school activities. Objective: In this sense, this research is addressed to know the composition of academic workspaces at home and analyze if some factors or elements affect the risk of musculoskeletal injuries in students of the higher level. Methodology: Through a structural equations model that has the latent construct of possible injuries (PL) in the hands, back, legs, head, eyesight, hearing, physical exhaustion, and breathing; the observable variables are attributed to the spaces used for academic activities at home, furniture and equipment, conditions and environment (CyMAT) Results and discussion: It is explored that a bad design of the academic workstation at home coupled with the inappropriate use of furniture and equipment increases the possibility of presenting symptoms associated with SCI and therefore, damage to the student's health. Conclusion: The mediation of workstations through the implementation of ergonomic elements substantially improves the quality of academic work at home, making evident the importance of ergonomics as a scientific discipline

Investigation of Heat Stress among Greenhouse Workers in Chhattisgarh, India

Greenhouse cultivation is spreading as it offers the grower a higher net yield per hectare from high quality crops as it reduces the likelihood of yield decline. The greenhouse is kept at 30-40? C with a relative humidity of up to 70%, which could be ideal for plant growth, but is not suitable for workers. Heat exposure in the workplace causes discomfort to the human while working. So, the main goal of conducting this research is to address the extent of heat stress and associated health issues for the greenhouse workers. The study was planned for 2022 in the Raipur district of Chhattisgarh. Prior to the assessment, a questionnaire survey was conducted among 50 greenhouse workers to learn perceptions of heat exposure, heat-related health issues and awareness of heat management. To get the heat exposure air temperature, wet bulb temperature, relative humidity, black globe temperature were measured on hourly basis. The wet bulb globe temperature (WBGT) was measured along with greenhouse workers' physiological parameters to quantify heat exposure. With the help of clock diagram showing Humidex Index (HI). The time period at which farmers most likely to suffer from heat stress was estimated. It was reported that in April, May, June, July, August and September WBGT index reaches varied between 30 and 34°C. According to ISO 7243 the recommended WBGT for comfortable workplace should be less than 31°C. Further study was conducted to get physiological responses of the 21 farm workers in three different type of greenhouses and at three time slots. It resulted that heart rate was maximum i.e. 156 bpm in walk in tunnel at 11 am to 1 pm. The average working heart rate was 20 % more than the open field condition. Hence, the study will help to make the strategies to reduce the exposure of heat stress conditions to the greenhouse workers.

Trastornos musculoesqueléticos y prácticas ergonómicas en universitarios peruanos durante la pandemia de la COVID-19

Introducción: El aislamiento social impuesto por la pandemia de la COVID-19 ha obligado a adaptarse a la educación a distancia. Objetivo: Determinar la prevalencia de trastornos musculoesqueléticos y su asociación con las prácticas ergonómicas durante el uso de la computadora en estudiantes de una universidad peruana. Métodos: Se realizó un estudio transversal en octubre de 2020. La muestra se compuso por 738 estudiantes, a quienes se les aplicaron el cuestionario nórdico estandarizado, para detectar síntomas de trastornos musculoesqueléticos, y otro desarrollado por los autores, para evaluar las prácticas ergonómicas. Resultados: La prevalencia de trastornos musculoesqueléticos fue de 97,4 %. Las regiones más afectadas resultaron el cuello (85,5 %), la región lumbar (73 %) y la dorsal (70,2 %). Los estudiantes con antecedentes de algún traumatismo (PRa: 1,03; IC 95 %: 1,01-1,04) que, durante el uso de la computadora, adoptaron las posturas decúbito prono (RPa: 1,02; IC 95 %: 1,01-1,04) y sentados con la cabeza inclinada (RPa: 1,03; IC 95 %: 1,00-1,07) tuvieron mayor prevalencia de un trastorno musculoesquelético. Conclusiones: Existe una alta prevalencia de trastornos musculoesqueléticos en los universitarios. Sobresalen el sexo femenino y quienes adoptan malas posturas durante el uso de la computadora; por tanto, se deben brindar medidas ergonómicas preventivas y de intervención en esta población.

Introduction: The social isolation imposed by the COVID-19 pandemic has made it necessary to adapt to distance education. Objective: To determine the prevalence of musculoskeletal disorders and their association with ergonomic practices during computer use in students from a Peruvian university. Methods: A cross-sectional study was carried out in October 2020. The sample consisted of 738 students, they had the standardized Nordic questionnaire to detect symptoms of musculoskeletal disorders; and another, developed by the authors, to evaluate ergonomic practices. Results: The prevalence of musculoskeletal disorders was 97.4%. The most affected regions were the neck (85.5%), the lumbar region (73%) and the dorsal region (70.2%). Students with history of trauma (PRa: 1.03; 95% CI: 1.01-1.04) who, while using the computer, adopted the prone position (RPa: 1.02; 95% CI : 1.01-1.04) and sitting with head tilted (RPa: 1.03; 95% CI: 1.00-1.07) had higher prevalence of a musculoskeletal disorder. Conclusions: There is high prevalence of musculoskeletal disorders in university students. The female sex and those who adopt incorrect postures while using the computer stand out; therefore, preventive and intervention ergonomic measures should be provided in this population.

Prevalência de distúrbios osteomusculares relacionadosao trabalho em agricultores do Oeste do Paraná / Prevalence of work-related osteomuscular disordersin farmers of western Paraná

Os distúrbios osteomusculares relacionados ao trabalho (DORT) podem afetar articulações, músculos, tendões, ligamentos e nervos periféricos e são comuns na agricultura devido à sobrecarga de trabalho, esforços excessivos e repetitivos e adoção de posturas inadequadas para a realização das atividades. O objetivo deste estudo é apresentar a prevalência de DORT, a intensidade e características da dor, além de descrever as categorias e ferramentas de trabalho de agricultores da Região Oeste do Paraná. Foi realizado um estudo observacional transversal com uma amostra representativa dos agricultores associados ao sindicato da região. Para coleta de dados utilizou-se um questionário sociodemográfico, um formulário sobre categorias e ferramentas de trabalho, a Escala Visual Analógica de dor, o Questionário Nórdico de Sintomas Osteomusculares e o questionário de McGill para caracterização da dor. Participaram do estudo 144 agricultores, com predomínio do sexo masculino (63,89%) e faixa etária entre 18 e 47 anos (73,61%). A prevalência de DORT nos agricultores foi de 100% e as regiões mais acometidas foram as partes inferior e superior das costas com 59,72% e 43,75% respectivamente. A intensidade da dor foi moderada em 50,69% e do tipo enjoada em 89,58% dos participantes. A atividade de cultivo de grãos está presente em 57,64% dos indivíduos e o uso de motosserra e maquinário agrícola foram as ferramentas mais citadas durante o labor. Os achados apontam a necessidade urgente de intervenção terapêutica e preventiva aos trabalhadores e contribuem ao avanço científico da área. Além de tratar os DORT, mostram-se imprescindíveis adaptações ergonômicas no trabalho dos agricultores.

Work-related musculoskeletal disorders (WRMD) can affect joints, muscles, tendons, ligaments and peripheral nerves and are common in agriculture due to work overload, excessive and repetitive efforts and the adoption of inappropriate postures to perform activities. The objective of this study is to present the prevalence of WRMD, the intensity and characteristics of pain, in addition to describing the categories and work tools of farmers in the western region of Paraná. A cross-sectional observational study was carried out with a representative sample of farmers associated with the worker ́s union in the region. For data collection, we used a sociodemographic questionnaire, a form on categories and work tools, the visual analogue pain scale, the Nordic questionnaire on musculoskeletal symptoms and the McGill questionnaire for pain characterization. A total of 144 farmers participated in the study, with a predominance of males (63.89%) aged between 18 and 47 years old (73.61%). The prevalence of WRMDs in farmers was 100% and the most affected body regions were the lower and upper back with 59.72% and 43.75% respectively. Pain intensity was moderate in 50.69% and nausea type in 89.58% of participants. Grain cultivation activity was present in 57.64% of individuals and the use of chainsaws and agricultural machinery were the most cited tools used during work. The findings point to the urgent need for therapeutic and preventive intervention to these land workers and can contribute to the scientific advancement of the area. Besides treating WRMDs, ergonomic adaptations in the work of farmers are essential.

Futuros cirurgiões-dentistas canhotos graduandos da Universidade Federal de Uberlândia: perfil, dificuldades e dores osteomusculares / Future left-handed dentists graduating from the Federal University of Uberlândia: profile, difficulties and musculoskeletal pain

Os indivíduos canhotos necessitam de utensílios para concretização de suas atividades diárias, bem como, para o exercício da prática odontológica onde a escassez de equipamentos específicos pode refletir em desgaste corporal, com isso, o presente trabalho tem por objetivo identificar os estudantes canhotos do curso de Odontologia da Universidade Federal de Uberlândia além de identificar suas dificuldades, queixas e locais de dores osteomusculares nas atividades laboratoriais e clínicas. Métodos: Foram incluídos todos os alunos canhotos matriculados no ano de 2021. Foram aplicados questionários on line para coletar os dados dos alunos. Resultados: Foram tabulados e como resultados, encontrou-se que os canhotos representam 5,6% do total de alunos do curso de Odontologia, a maioria são mulheres (66,7%), com média de idade de 21 anos. O segundo período foi o que apresentou maior número de canhotos (25%). As atividades práticas do curso, estas foram cursadas por 91,7% dos entrevistados, que relataram com maior frequência usar a mão esquerda (62,5%), sentar na posição de 1 hora (20,8%) e ter maior dificuldade ao tratar o quadrante superior direito (45,8%). Os locais mais citados de dores osteomusculares após realizar essas atividades, foram: punhos e mãos (62,5%), parte inferior das costas (62,5%) e pescoço (58,3%). Conclusão: Os canhotos representam a minoria dos alunos e suas dificuldades são, a falta de estrutura física adequada e a incompreensão das pessoas ao redor. Em relação a queixa de dor ou desconforto, mãos, punhos, parte inferior das costas e pescoço foram os membros mais citados no estudo(AU)

Left-handed individuals need tools to carry out their daily activities, as well as for the exercise of dental practice where the scarcity of specific equipment can reflect on body wear, with this, the present work aims to identify left-handed students of the course of Dentistry at the Federal University of Uberlândia, in addition to identifying their difficulties, complaints and sites of musculoskeletal pain in laboratory and clinical activities. Methods: All left-handed students enrolled in the year 2021 were included, and three questionnaires were applied online to identify the profile of students and the difficulties encountered in laboratory and clinical practice. Results: They were tabulated and as a result, it was found that left-handers represent 5.6% of the total number of students in the Dentistry course, most of them are women (66.7%), with a mean age of 21 years. The second period was the one with the highest number of left-handers (25%). The practical activities of the course were carried out by 91.7% of the interviewees, who reported more frequently using their left hand (62.5%), sitting in the 1 o'clock position (20.8%) and having greater difficulty when treat the upper right quadrant (45.8%). The most cited sites of musculoskeletal pain after performing these activities were: wrists and hands (62.5%), lower back (62.5%) and neck (58.3%). Conclusion: Lefthanded people represent the minority of students, and their difficulties are the lack of adequate physical structure and the misunderstanding of the people around them. In relation to complaints of pain or discomfort, hands, wrists, lower back and neck were the most cited members in the study(AU)

Ambiente de trabalho seguro e sustentável: como a ergonomia de conscientização e participativa se aplica aos servidores públicos? / Safe, sustainable work environment: how awareness and participatory ergonomics can be applied to public servers? / Un entorno de trabajo seguro y sostenible: ¿cómo aplicar la sensibilización y la ergonomía participativa a los servidores públicos?

Introdução: As práticas ergonômicas de conscientização e de participação assumem importante papel na prevenção das doenças ocupacionais. Entretanto, os métodos utilizados pelos programas de prevenção das instituições e empresas visam a correção dos riscos ergonômicos, não observando o fator humano detentor da execução da tarefa. Objetivo: Analisar a utilização das Ergonomia de Conscientização e Participa- ção como programa de educação visando a prevenção primária e a conscientização dos riscos ergonômicos das lesões por esforço repetitivo (LER) e distúrbios osteomusculares relacionadas ao trabalho (DORT). Metodologia: Revisão crítica de literatura, sintetizando o embasamento teórico pertinente ao tema, com documentação técnica, normas, decretos, portarias e dados estatísticos atualizados de afastamento; formando, assim, à análise documental. Resultados e Discussão: Os dados estatísticos mostram a importância de uma mudança nos hábitos, nos programas e nas intervenções ergonômicas no ambiente laboral do trabalhador, visando minimizar os impactos socioeconômicos dos altos índices de afastamento para organizações, empresas privadas e, principalmente, serviços públicos de ensino superior devido a maior precariedade dos ambientes de trabalho. Práticas ergo- nômicas de conscientização e participação dos trabalhadores podem proporcionar uma melhora nos desconfortos do ambiente laboral. Ressalta-se a escassez de pesquisas que priorizem a relação custo-benefício e a eficácia a longo prazo na área de Ergonomia. Conclusões: Novas análises devem ser observadas para promover melhora da qualidade de vida do trabalhador, diminuição das perdas econômicas, contribuindo para um trabalho seguro, decente e sustentável como preconiza principalmente o Objetivo 8 da Agenda 2030 da Organização das Nações Unidas.

Introduction: Ergonomic awareness and participation practices play an im- portant role in the prevention of occupational diseases. However, the methods used by institutions and companies' prevention programs aim to correct ergonomic risks and do not observe the human factor responsible for carrying out the task. Purpose: To analyze the use of Participation and Awareness Ergonomics as an education program aimed at raising awareness of ergonomic risks for the prevention of repetitive strain injuries (RSI) and work-related musculoskeletal disorders (WRMD). Methodology: Critical literature review, summarizing the theoretical basis relevant to the topic, with technical documen- tation, norms, decrees, ordinances, and updated statistical data on leave; thus forming the documental analysis. Results and discussion: Statistical data show the importance of changing habits, programs, and ergonomic interventions in the work environment of the worker, in order to minimize the socioeconomic impacts of the high removal rates of organizations, private companies, and, mainly, public higher education due to more pre- carious work environments. Ergonomic practices of awareness and participation of work- ers can improve the work environment's discomfort. The lack of research that prioritizes the cost-benefit ratio and long-term effectiveness in Ergonomics is highlighted. Conclu- sions: New studies must promote a significant improvement of the quality of life of work- ers, reduction of economic losses and, thus contribute to a safe environment, decent and sustainable, as advocated by Objective 8 of the United Nations 2030 Agenda.

Introducción: Las prácticas de sensibilización y participación ergonómicas desempeñan un papel importante en la prevención de las enfermedades profesionales. Sin embargo, los métodos utilizados por los programas de prevención de instituciones y em- presas tienen como objetivo corregir los riesgos ergonómicos y no observan el factor hu- mano responsable de la realización de la tarea. Propósito: Analizar el uso de la Ergonomía de Participación y Concienciación como programa educativo dirigido a la concienciación de los riesgos ergonómicos para la prevención de las lesiones por esfuerzos repetitivos (LER) y los trastornos musculoesqueléticos de origen laboral (TME). Metodología: Re- visión lit-eratura crítica, resumiendo la base teórica relevante al tema, con documentación técnica, normas, decretos, ordenanzas, y datos estadísticos actualizados sobre bajas la- borales; conformando así el análisis documental. Resultados y discusión: Los datos es- tadísticos demuestran la importancia del cambio de hábitos, programas e intervenciones ergonómicas en el ambiente de trabajo del trabajador, para minimizar los impactos soci- oeconómicos de los altos índices de desvinculación de organizaciones, empresas privadas y, principalmente, de la enseñanza superior pública, debido a la mayor precariedad de los ambientes de trabajo. Práticas ergonómicas de conscientização e par-ticipação dos tra- balhadores podem melhorar a incomodidade do ambiente de trabalho. Se destaca la falta de re-investigación que priorice la relación costo-beneficio y la eficacia a largo plazo en Ergonomía. Conclusiones: Nuevos estudios deben promover una mejora significativa de la calidad de vida de los trabajadores, la reducción de las pérdidas económicas y, así contribuir a un entorno seguro, digno y sostenible, como propugna el Objetivo 8 de la Agenda 2030 de las Na-ciones Unidas.