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1.
Work ; 41 Suppl 1: 4782-9, 2012.
Article in English | MEDLINE | ID: mdl-22317457

ABSTRACT

Evidence synthesized based on randomized controlled trials (RCT) results are recognized as the pinnacle of research excellence; however, the conduction of RCT in workplace environment is not always possible. This study comparatively reviewed evidence from RCT and non-RCT studies in which participants performed workplace exercise for musculoskeletal pain control. Up to February 2011, PubMed, MEDLINE, Embase, Cochrane, PEDro and Web of Science databases were searched. All trials that evaluated workplace exercise interventions for controlling musculoskeletal pain were included. The PEDro scale was used to rate the studies' quality, PRISMA and Cochrane recommendations were applied, and association between frequencies of effect size categories (small, moderate, large) from various outcomes by study type was tested (2x3 contingency table). The search yielded 10239 references in English, from which 21 RCT and 12 non-RCT were selected. Both groups of studies presented methodological flaws including descriptions of randomization, blinding of examiners and absence of intention-to-treat analysis for the RCT, and further absence of controls and blind assessor for the non-RCTs. RCTs had significantly more moderate and large effect size reported in their results compared to non-RCTs (p=0.04). Considering the difficulties in randomizing participants in occupational settings, all studies would benefit from better describing pertinent methodological information.


Subject(s)
Exercise , Health Promotion , Musculoskeletal Pain/prevention & control , Occupational Health , Randomized Controlled Trials as Topic , Humans , Workplace
2.
Ergonomics ; 55(1): 78-86, 2012.
Article in English | MEDLINE | ID: mdl-22176486

ABSTRACT

In this study, we investigated how experienced and inexperienced subjects handle a box when it could be approached from any of its sides. Subjects moved a box (11 kg) either to a high (HS) or a low surface (LS). Wrist movements and grip force were synchronised and recorded, respectively, by electrogoniometers and an instrumented box. All subjects adopted a lateral-and-bottom grip, with parts of the hands simultaneously placed on the side and bottom of the box. This grip allowed the 50th percentile of wrist movements to be within safe limits, particularly in the sagittal plane. Low force was associated with lowering the box to LS and equally distributed but greater force when lifting to HS. Larger ulnar deviation was recorded when the box was lifted to HS. Only peak of wrist extension differentiated experienced from inexperienced subjects, with experienced presenting larger wrist extension. Alternative box designs are suggested to improve handling in real settings. PRACTITIONER SUMMARY: Understanding worker preferences for box lifting behaviour can contribute to the development of new designs that facilitate the adoption of more efficient postures while reducing the risk of upper-limb musculoskeletal disorders and promoting safer manual material handling.


Subject(s)
Hand Strength/physiology , Hand/physiology , Range of Motion, Articular/physiology , Task Performance and Analysis , Wrist Joint , Analysis of Variance , Ergonomics , Humans , Male , Young Adult
3.
Braz. j. phys. ther. (Impr.) ; 13(2): 123-129, Mar.-Apr. 2009. ilus, tab
Article in Portuguese | LILACS | ID: lil-516029

ABSTRACT

Contextualização: A presença de sintomas musculoesqueléticos em eletricistas deve ser caracterizada para auxiliar na identificação de fatores de riscos para os distúrbios osteomusculares relacionados ao trabalho (DORT) e para possibilitar implementação de medidas preventivas. Objetivo: Avaliar a ocorrência de sintomas de DORT em eletricistas de uma regional de uma empresa de distribuição de energia elétrica, verificar se existiam diferenças entre as funções exercidas quanto à proporção de trabalhadores sintomáticos, e realizar um levantamento preliminar dos principais fatores de riscos presentes. Métodos: Foram avaliados 30 eletricistas do sexo masculino (38,1±5,5 anos), divididos em três equipes conforme a função exercida (ELV=Eletricistas Linha Viva; EEM=Eletricistas Emergência/Manutenção; EC=Eletricistas Comerciais). Sintomas musculoesqueléticos foram identificados em mapa corporal, qualificados pelo Questionário McGill e quantificados por escala numérica. O questionário DASH também foi aplicado para avaliar impacto dos sintomas nos ombros na performance dos trabalhadores. Resultados: 70% dos eletricistas apresentaram ao menos um sintoma musculoesquelético nos ombros, coluna ou joelhos. A equipe ELV apresentou sintomas musculoesqueléticos em 100% dos trabalhadores e maior pontuação no questionário DASH (28±15). A equipe EEM apresentou sintomas em 67% dos trabalhadores e pontuação DASH de 8±11, e a equipe EC apresentou sintomas em 50%, mas sem sintomas nos ombros. A proporção de trabalhadores sintomáticos nos ombros estava associada à função exercida (p=0.02). Conclusões: Eletricistas avaliados apresentaram alta proporção de trabalhadores sintomáticos, que variou conforme a atividade ocupacional. Intervenções são necessárias para reduzir os riscos de DORT dentre os eletricistas avaliados.


BACKGROUND: Linemen should be evaluated regarding the presence of musculoskeletal symptoms to guide the identification of risk factors for development of work-related musculoskeletal disorders (WMSD) and to allow the implementation of preventive measures. OBJECTIVE: To assess the occurrence of WMSD symptoms among linemen working at a regional branch of an electricity distribution company, to investigate whether there were differences in the proportions of symptomatic workers among the functions performed, and to perform a preliminary survey of the main risk factors present. METHODS: Thirty male linemen (mean age 38.1±5.5 years) were evaluated, divided into three teams according to their job function (Live Line Linemen, LLL; Maintenance/Emergency Linemen, MEL; Commercial Linemen, CL). Musculoskeletal symptoms were identified on a body map, qualified using the McGill questionnaire and quantified using a numerical scale. The DASH questionnaire was also applied to evaluate the impact of the shoulder symptoms on the workers' performance. RESULTS: Seventy percent of the linemen presented at least one musculoskeletal symptom in the shoulders, back or knees. All of the LLL team presented musculoskeletal symptoms and these workers had the highest scores in the DASH questionnaire (28±15). Sixty-seven percent of the MEL team presented symptoms, and their DASH score was 8±11. Fifty percent of the CL team presented symptoms, but none of them had shoulder symptoms. The proportion of workers with shoulder symptoms was related to their job function (p=0.02). CONCLUSIONS: A high proportion of the linemen presented symptoms which varied according to the occupational activity. Interventions are needed to reduce the risk of WMSD among the linemen evaluated.

4.
Braz. j. phys. ther. (Impr.) ; 13(1): 52-58, jan.-fev. 2009. graf
Article in English, Portuguese | LILACS | ID: lil-508838

ABSTRACT

CONTEXTUALIZAÇÃO: A dor crônica e difusa encontra-se presente tanto nas Lesões por Esforços Repetitivos (LER)/Distúrbios Osteomusculares Relacionados ao Trabalho (DORT) como na Fibromialgia, trazendo dificuldades diagnósticas, preventivas e terapêuticas para profissionais da saúde envolvidos no tratamento de acometidos. OBJETIVOS: Analisar os aspectos relevantes na emissão dos diagnósticos de DORT e Fibromialgia na percepção de médicos assistenciais e peritos. MÉTODOS: Neste estudo, 75 médicos (36 assistenciais e 39 peritos) responderam a questões estruturadas e abertas sobre aspectos considerados relevantes na emissão de diagnóstico destas síndromes. RESULTADOS: As respostas dos dois grupos foram correlacionadas pelo teste de Spearman (α=0,05) e submetidos ao método de Discurso do Sujeito Coletivo (DSC). Os médicos assistenciais tenderam a valorizar o fator "quadro clínico e tempo de evolução", enquanto os médicos peritos tenderam a apontar "história ocupacional" na definição do diagnóstico de LER/DORT. Já para o diagnóstico de Fibromialgia, os peritos tenderam a apontar o fator "quantidade de tender points", enquanto os médicos assistenciais indicaram mais frequentemente "característica da dor". Apesar dessas discretas discrepâncias, alta correlação (r=0,85, ρ=0,01) foi identificada entre os grupos quando apontaram aspectos comuns e distintos no estabelecimento do diagnóstico para as duas síndromes. Os relatos também enfatizaram a necessidade da investigação de riscos presentes no trabalho para a definição de um diagnóstico mais preciso. CONCLUSÕES: Nesse sentido, objetivando uniformizar condutas avaliativas, preventivas e terapêuticas para médicos, fisioterapeutas e demais profissionais envolvidos no atendimento dessas síndromes, seria recomendável maior divulgação dos critérios utilizados por entidades internacionais no diagnóstico da Fibromialgia e a inclusão de treinamento para identificação de efeitos adversos de condições...


BACKGROUND: Chronic and diffuse pain is present either in Repetitive Strain Injuries (RSI)/Work-related Musculoskeletal Disorders (WMSD) and Fibromyalgia, leading to difficulties in determining preventive and therapeutic measures by health professionals who deals with patients presenting these disorders. OBJECTIVES: Analyze the relevant aspects in the emission of the diagnosis of WMSD and Fibromyalgia in the perception of physicians assistants and experts. METHODS: In this study 75 physicians (36 assistants and 39 experts) answered structured and open questions about aspects that they consider relevant to the establishment of diagnosis. RESULTS: Results were correlated by Spearman's test (α=0.05) and submitted to the Collective Subject's Speech method. Assistant physicians tended to emphasize the factor "clinical conditions and time elapsed", whilst expert tended to indicate "occupational history" for definition of the WMSD diagnosis. For the diagnosis of Fibromyalgia, experts physicians tended to emphasize the factor "amount of tender points", whilst the assistant physicians indicated "pain characteristics". Despite of these slight discrepancies, the results from both groups were highly correlated (r=0.85; p=0.01) when participants were asked to indicate common and different relevant aspects for the diagnosis of both syndromes. Furthermore, the physicians agreed about the necessity of risk investigation at work for a more accurate diagnosis. CONCLUSIONS: In order to standardize preventative and therapeutic measures adopted by physicians, physiotherapist and other professional evolved with these syndromes it would be advisable to make the international criteria for Fibromyalgia diagnosis better know, and also to provide better training on the identification of the adverse effects of inadequate work conditions on the musculoskeletal system to health professional.

5.
Braz. j. phys. ther. (Impr.) ; 12(6): 460-467, Nov.-Dec. 2008. ilus, graf, tab
Article in English, Portuguese | LILACS | ID: lil-504887

ABSTRACT

INTRODUCTION: Different sources of variations, such as electrogoniometer characteristics and procedures, may affect the accuracy and precision of movement measurements during gait. OBJECTIVE: To quantify the variations and compare the effects produced by different sources of variation in electrogoniometric gait recordings: the sensors, procedures (trials) and the knee joint. METHODS: Knee flexion/extension and valgus/varus movements were recorded during gait on the treadmill. The recordings were partitioned into strides and normalized in time using a routine developed in MatLab. Mean curves for the knee during gait were derived from 50 strides, and seven conditions were evaluated: one comparing pairs of sensors; two comparing pairs of different trials (including variations due to sensors); and four comparing the right and left knees (including variations due to sensors and trials). Mean standard deviations of the differences were calculated. To estimate the variations relating to the trial and the knee joint, the compound standard deviations were transformed into variances and split into their components. RESULTS: The variation introduced by pairs of sensors in the same model applied in one trial was smaller than the variation introduced by the same sensor used in two consecutive trials. Furthermore, the variation introduced by the difference between the right and left knees was greater than the variation introduced by the difference between sensors (A and B) and trials (1 and 2). CONCLUSIONS: It is, therefore, preferable to use different sensors in the same data recording (simultaneous) than use the same sensor in two different recordings (consecutive).


INTRODUÇÃO: Diferentes fontes de variação, tais como características do eletrogoniômetro e procedimentos podem afetar a acurácia e precisão das medidas do movimento durante a marcha. OBJETIVO: Quantificar a variação e comparar o efeito das diferentes fontes de variação nos registros eletrogoniométricos da marcha: os sensores, os procedimentos (coletas consecutivas) e a articulação do joelho. MÉTODOS: Movimentos de flexo-extensão e valgo-varo do joelho foram registrados durante a caminhada na esteira. Os registros foram divididos em passadas e normalizados no tempo usando uma rotina desenvolvida em MatLab. As curvas médias do joelho durante a marcha foram derivadas de 50 passadas, e sete condições foram avaliadas: uma para comparar dois sensores; duas para comparar duas diferentes coletas (incluindo a variação do sensor), e quatro para comparar os joelhos direito e esquerdo (incluindo a variação dos sensores e coletas). Os desvios-padrão médios das diferenças foram calculados. Para estimar as variações devido às coletas e à articulação do joelho, os desvios-padrão compostos foram transformados em variâncias e seus componentes isolados. RESULTADOS: A variação introduzida por dois sensores do mesmo modelo aplicados em uma coleta foi menor do que a variação introduzida pelo mesmo sensor usado em duas coletas consecutivas. Ainda, a variação introduzida pela diferença entre os joelhos direito e esquerdo foi maior do que a variação introduzida pela diferença entre os sensores (A e B) e as coletas (1 e 2). CONCLUSÕES: Assim, é preferível usar diferentes sensores na mesma coleta de dados (simultânea) do que usar o mesmo sensor em dois registros diferentes (consecutivos).

6.
Braz. j. phys. ther. (Impr.) ; 12(4): 331-337, jul.-ago. 2008. ilus, graf, tab
Article in English | LILACS | ID: lil-496349

ABSTRACT

OBJECTIVE: To evaluate the effects of eccentric isokinetic training on knee range of motion (ROM) of healthy subjects. METHODS: The knee extensor and flexor isokinetic peak torques and ROM of flexion/extension and varus/valgus knee movements during gait of 18 healthy men (21.7±2.2 years; 1.73±0.10m; 68.7±9.4kg; body mass index: 22.6±2kg/m²) were analyzed, before and after six weeks of bilateral eccentric isokinetic training of the knee extensors at 30º/s. RESULTS: The knee extensor torque increased in both limbs (right, from 229±54 to 304±53Nm; p<0.01; and left, from 228±59 to 311±63Nm; p<0.01), without any difference in torque gain between them. The knee flexor peak torque increased (from 114±30 to 123±22Nm; p<0.05), but the hamstrings/quadriceps (H/Q) ratio decreased (from 0.5±0.08 to 0.39±0.07; p<0.01) after the training. There were no differences in the flexion/extension and varus/valgus movements after the training, except for a small change (4°) in valgus for the left knee. CONCLUSIONS: The eccentric isokinetic training of the knee extensors increased the extensor torque and decreased the H/Q ratio, although the effect on the gait pattern seemed negligible in healthy subjects. Associated training for flexors, complementary to the extensor training, seems to be necessary for balance between knee agonists and antagonists.


OBJETIVO: Avaliar os efeitos do treino isocinético excêntrico sobre a amplitude de movimento (ADM) do joelho em sujeitos saudáveis. MÉTODOS: Foram analisados os picos de torque isocinético dos extensores e flexores do joelho e a ADM de flexo/extensão e valgo/varo, durante a marcha, de 18 homens saudáveis (21,7±2,2 anos; 1,73±0,10m; 68,7±9,4kg; índice de massa corpórea: 22,6±2kg/m²) antes e após seis semanas de treino isocinético excêntrico bilateral dos extensores do joelho a 30º/s. RESULTADOS: O torque extensor do joelho aumentou em ambos os membros, direito (de 229±54 para 304±53Nm; p<0,01) e esquerdo (de 228±59 para 311±63Nm; p<0,01) sem diferença de ganho de torque entre eles. O pico de torque flexor aumentou (de 114±30 para 123±22Nm; p<0,05), mas a razão isquiotibiais/quadríceps (I/Q) diminuiu (de 0,5±0,08 para 0,39±0,07; p<0,01) após o treino. Não houve diferença para os movimentos de flexo/extensão e valgo/varo após o treino, exceto uma pequena mudança (4°) no valgo para o joelho esquerdo. CONCLUSÕES: O treino isocinético excêntrico dos extensores do joelho aumentou o torque extensor e diminuiu a razão I/Q, entretanto o efeito sobre o padrão da marcha parece desprezível em sujeitos saudáveis. Um treino associado dos flexores, complementar ao treino dos extensores parece ser necessário para o equilíbrio entre agonistas e antagonistas do joelho.

7.
Gait Posture ; 24(3): 370-4, 2006 Nov.
Article in English | MEDLINE | ID: mdl-16337796

ABSTRACT

Knee kinematics after anterior cruciate ligament (ACL) reconstruction is of interest in studies evaluating the effect of training programs. Many studies have addressed knee flexion/extension but not valgus/varus movements. Considering that joint stability is a major concern in ACL reconstruction surgery, movements occurring in the frontal plane of the knee also deserve attention. Knee extensor torque was analyzed by an isokinetic dynamometer and the angular amplitudes and velocities of flexion/extension and valgus/varus movements were analyzed by goniometry during gait 9 months after ACL reconstruction. The analysis was repeated after 3 months of eccentric isokinetic training of the quadriceps in five patients. The gait pattern was also recorded for 10 healthy controls. The knee extensor torque and flexion/extension range of movement during gait increased significantly after training. However, an unexpectedly increased valgus, most pronounced during the swing phase, which may imply adverse effects on the knee, was also observed in the ACL reconstructed knee. The recorded valgus angles may however be overestimated due to crosstalk. Thus, the extent of the increased valgus, as well as the mechanisms involved and the functional and clinical implications, need clarification before eccentric training after ACL reconstruction can be generally recommended.


Subject(s)
Anterior Cruciate Ligament Injuries , Anterior Cruciate Ligament/surgery , Gait/physiology , Knee Injuries/surgery , Knee Joint/physiopathology , Knee Joint/surgery , Quadriceps Muscle/physiology , Adult , Biomechanical Phenomena , Humans , Knee Injuries/physiopathology , Knee Injuries/rehabilitation , Male , Plastic Surgery Procedures , Torque
8.
Braz. j. phys. ther. (Impr.) ; 8(2): 123-128, maio-ago. 2004.
Article in Portuguese | LILACS | ID: lil-384561

ABSTRACT

Varios fatores individuais e ocupacionais podem atuarfacilitando a ocorrencia e/ou o agravamento das lombalgias relacionadas ao trabalho, dentre os quais: manuseio de cargas, repeticao e flexao anterior do tronco. Portanto, a quantificacao dos movimentos do tronco e importante para avaliar os riscos epropor intervencos de controle. Diferentes metodos de registro de movimentos, desde os mais sofisticados e precisos ate os mais simles e acessiveis, tem sido utilizados nessa tarefa. O objetivo deste estudo foi avaliar, comparativamente, um novo metodo simples de medida linear da flexao lombar, o distanciometro, utilizando como referencia um equipamento preciso, o eletrogoniometro. Participaram do estudo 12 sujeitos saudaveis, do sexo masculino, com idade entre 18 e 25 anos, altura de 1,65 a 1,80m, peso de 60 a 80 kg e indeice de massa corporal de 20 a 26 Kg/m2. Os angulos preestabelecidos e utilizados como referencia para a comparaco pela correlacao de Pearso(r), e as faixas de amplitude, pelo teste de Friedman. Os valores da correlacao entre os angulos foram elevados (r=0,960, indicando alta confiabilidade paralela do distanciometro em relacao ao eletrogoniometro, enquanto os resultados do teste de Friedaman indicaram ausencia de diferencas significativas ao longo das faixas dea mplitude avaliadas (p=0,342), sugerindo consistencia das medidas ao longo de toda a faixa de amplitude. Finalmente, apesar de o distanciometro encontrar-se ainda em fase de prototipo e necessitando de estudos futuros para aprimoramento, o mesmo indicou potencialidade para medicao da flexao lombar no que tange a seus custos e a confiabilidade paralela


Subject(s)
Cumulative Trauma Disorders , Low Back Pain , Work
9.
Rev Saude Publica ; 38(2): 149-56, 2004 Apr.
Article in Portuguese | MEDLINE | ID: mdl-15122368

ABSTRACT

OBJECTIVE: To evaluate the impact of personal, clinical, and occupational aspects on work ability of workers with and without work-related musculoskeletal disorders using the Work Ability Index. METHODS: There were participating 127 workers of industrial production lines of a medium-size multinational company. An approved version of the Work Ability Index, a questionnaire developed by Finland's Institute of Occupational Health, was used. Pain scale was also applied. A descriptive analysis was carried out using the Chi-square test and it was also performed a logistic regression analysis. RESULTS: A significant association was identified between the Work Ability Index and all personal, clinical and occupational aspects. Regression analysis showed that pain and sick leave together accounted for 59% of poor work ability. CONCLUSIONS: Different levels of pain severity were associated with distinct as well as equivalent levels of work ability loss. The results suggest that either pain reports were consistent or being both pain and work ability self-reported they therefore reflect the same perception mechanisms. Future studies might contribute to further understanding the trends found.


Subject(s)
Musculoskeletal Diseases/physiopathology , Occupational Diseases/physiopathology , Work Capacity Evaluation , Adult , Case-Control Studies , Chi-Square Distribution , Chronic Disease , Female , Humans , Logistic Models , Male , Middle Aged , Pain Measurement , Prognosis , Task Performance and Analysis
10.
Rev. saúde pública ; 38(2): 149-156, abr. 2004. tab, graf
Article in Portuguese | LILACS | ID: lil-357987

ABSTRACT

OBJETIVO: Avaliar o impacto de fatores pessoais, do trabalho e da lesão na capacidade funcional dos trabalhadores com e sem história de acometimento de lesões músculo-esqueléticas relacionadas ao trabalho, através da aplicação do índice de capacidade para o trabalho. MÉTODOS: Participaram do estudo 127 trabalhadores da linha de produção de uma empresa multinacional de porte médio. Foi aplicada uma tradução autorizada do índice de capacidade para o trabalho, um questionário elaborado pelo Instituto de Saúde Ocupacional da Finlândia, assim como uma escala de dor. Os resultados foram analisados descritivamente, por meio do teste qui-quadrado e pela análise de regressão logística. RESULTADOS: Todos os fatores pessoais, ocupacionais e clínicos analisados apresentaram relação significativa com a capacidade para o trabalho. A análise de regressão mostrou que as variáveis de dor e afastamentos, quando associadas, explicam 59 por cento das ocorrências de baixa capacidade para o trabalho. CONCLUSÕES: Diferentes níveis de dor refletiram níveis também distintos e equivalentes de perda da capacidade para o trabalho, o que pode sugerir que os relatos de dor são consistentes. Ou, por outro lado, que ambos - dor e incapacidade - são baseados em auto-relatos e, portanto, estão permeados pelos mesmos mecanismos de percepção. Estudos futuros podem contribuir para melhor avaliar essas tendências.


Subject(s)
Work Capacity Evaluation , Cumulative Trauma Disorders , Chronic Disease , Pain , Industry , Occupational Groups
11.
Braz. j. phys. ther. (Impr.) ; 7(3): 269-274, set.-dez. 2003.
Article in Portuguese | LILACS | ID: lil-355050

ABSTRACT

A elevada incidencia de desordens lombares representa altos custos pessoais e sociais par o Estado. O movimento extremo flexao lombar e fundamental para o desenvolvimento e agravamento da dor nessa regiao. desta forma, a quantificacao precisa desse movimento e importante para prevencao e tratamento dessas desordens. O proposito deste trabalho foi avaliar a confiabilidade paralela do duplo fleximetro (FLM) da marca FLEXIMETER por intermedio da utilizacao de um eletrogoniometro (EGM) flexivel, considerado altamente preciso, durante as medidas do movimento de flexao anterior da coluna lombar. Foram estudados doze sujeitos saudaveis (sexo masculino, idade media de 21,2 anos, altura media de 1,73m, massa corporal media de 72,3kg, IMC entre 20 e 30 kg/m2). Apos triados por uma avaliacao postural, os sujeitos foram familiarizados com a situacao de teste e preparados para a coleta. Tres posicoes preestabelecidas ao longo do movimento de flexao anterior da coluna lombar (15o., 30o., e 45o.) foram registrados pelo EGM e utilizadas como parametro para as medidas etuadas simultanamente com o duplo fleximetro. Os resultados do teste t emparelhado para as medias dos valores angulares do FLM mostraram os p-valores 0,0052 e 0,17, respectivamente, para as posicoes 15o., 30o. e 45o. registradas pelo EGM. Apenas para o angulo de 45o. (p>0,05) as medidas registradas pelos dois aparelhos foram equivalentes e , portanto, confiaveis. Apesar de a confiabiliade do FLM tender a aumentar com o aumento da amplitude de movimento, de maneira geral, o FLM da marca FLEXIMETER nao pode ser considerado confiavel para a amostra estudada


Subject(s)
Low Back Pain , Lumbar Vertebrae
12.
Clin Biomech (Bristol, Avon) ; 18(7): 682-4, 2003 Aug.
Article in English | MEDLINE | ID: mdl-12880717

ABSTRACT

OBJECTIVE: To describe a gauging device for electrogoniometer sensors and to evaluate the reliability and accuracy of different sensors including two similar sensors. DESIGN: Repeated measurement design for reliability. BACKGROUND: Despite being considered reliable equipment, several aspects of electrogoniometer reliability and accuracy have not been reported so far. METHOD: Five repeated measurements of each electrogoniometer sensor were performed in 1 degrees increments, during the whole uniplanar amplitudes of flexion, extension, lateral deviations and rotational movements, totaling 6380 measurements. RESULTS: Values from the coefficient of variation and mean square error, respectively indicated that the reliability and accuracy of the sensors varied between sensors and movements, with goniometers being more reliable and accurate than torsiometers. A significant difference between identical sensors was identified. CONCLUSIONS: No similar pattern of variation was found between the sensors evaluated, indicating that every sensor should be tested for its reliability and accuracy when highly precise measurements are needed, and particularly when bilateral limbs are being compared. RELEVANCE: Research on movement recordings demands precise methodology for quantifying angular variations.


Subject(s)
Equipment Failure Analysis/methods , Movement/physiology , Physical Examination/instrumentation , Range of Motion, Articular/physiology , Spine/physiology , Calibration , Physical Examination/methods , Reproducibility of Results , Rotation , Sensitivity and Specificity
13.
Braz. j. phys. ther. (Impr.) ; 5(1): 41-7, jan.-jun. 2001. ilus, graf
Article in Portuguese | LILACS | ID: lil-297878

ABSTRACT

O objetivo deste estudo foi analisar a influencia da automatizacao industrial sobre as amplitudes e frequencia de movimentos do punho em trabalhadoras de uma empresa multinacional de material escolar. Os movimentos foram registrados pela eletrogoniometria durante o trabalho normal em tres setores com diferentes niveis de automatizacao (manual, semi-automatizado e automatizado) da secao de empacotamento. Foram analisadas as amplitudes maximas atingidas, a amplitude media e o numero de movimentos. Os resultaddos indicam que, independe do nivel de automatizacao dos postos de trabalho, foram observados posturas extremas proximas ao limite articular e repetitividade de movimentos. Apesar desses resultados gerais, diferencas estatisticamente significativas entre os setores foram observadas no numero de movimentos (p<0,01). No setor semi-automatizado o numero de movimentos foi 66(por cento) maior que no setor automatizado e 33(por cento) maior que no manual. Estes resultados sugerem que a automatizacao progressiva dos postos de trabalho nao necessariamente elimina os fatores de risco para as lesoes musculo-esqueleticas. Isso e particularmente valido nas situacoes em que atividades manuais complementares sao mantidas ou cuja interface homem-maquina seja pouco flexivel


Subject(s)
Automation , Cumulative Trauma Disorders , Muscular Dystrophies , Occupational Diseases , Risk Factors , Wrist Injuries
14.
Braz. j. phys. ther. (Impr.) ; 4(1): 33-8, jul.-dez. 1999. ilus, tab, graf
Article in Portuguese | LILACS | ID: lil-277266

ABSTRACT

This study compares movements performed by healthy and workers with musculoskeletal disordes when executing a sequence of simple handling tasks. Ninety eight industrial workers, 49 healthy and 49 suffers, were recruited after being screened for musculosketal disorders. The disorders were classified into progressive stages, according to the severity of the symptomsand physical sigs. There were significant differences between suffers and healthy workers when comparing individual and occupational aspects. A particular movement performed only by the workers with symptoms was identified from the video analysis, and was associated with the progressive stages of the disorders (p<0,05), and with sick-leave (p<0,01). The relation between these particular movement and the progressive stages of the disorder, may suggest that the movements are performed as a compensation for pain and reduction of upper limb strength.


Subject(s)
Humans , Female , Adolescent , Adult , Musculoskeletal Diseases/physiopathology , Occupational Diseases/physiopathology , Workload , Palpation , Posture/physiology
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