RESUMO
BACKGROUND: The aim of the present study was to assess plantar pressure distribution and musculoskeletal symptoms following the use of customized insoles among female assembly line workers. METHODS: The study included 29 female assembly line workers (age, 29.76 ± 5.79 years; weight, 63.79 ± 12.11 kg) with musculoskeletal symptoms who work predominantly while standing. The Nordic Musculoskeletal Questionnaire was administered to the study population. Plantar pressure was determined using a computerized plantar pressure feedback system. A control group (n=13) used ethylvinylacetate insoles (Podaly®) that were individually heat molded and heat glued. The intervention group (n=14) also used the insoles and a strip of the same material was added to the site of greatest plantar pressure as determined by the electronic feedback device. After five weeks, the plantar pressure data were collected again and the questionnaire was administered a second time. RESULTS: There was no significant difference between groups with regard to pain in any anatomic site. However, within each group the lumbar region exhibited a reduction in symptoms in the intervention group (P<0.05), and the feet exhibited a reduction in symptoms in both groups (P<0.05). Mean plantar pressure increased and plantar surface decreased in the intervention group (P<0.05). CONCLUSION: Insoles increased foot comfort in both groups. However, the added strip did not significantly modify either plantar pressure or other symptoms in female workers.
Assuntos
Órtoses do Pé , Pé/fisiologia , Fenômenos Fisiológicos Musculoesqueléticos , Adulto , Antropometria , Fenômenos Biomecânicos , Brasil , Método Duplo-Cego , Feminino , Humanos , Traumatismos Ocupacionais/prevenção & controle , Medicina do Trabalho/métodos , Dor/prevenção & controle , Pressão , Sapatos , Inquéritos e Questionários , Compostos de Vinila/químicaRESUMO
OBJETIVOS: Comparar os efeitos do uso de dois tipos de palmilhas, customizadas e pré-fabricadas, sobre a descarga plantar de peso e o comportamento de sintomas osteomusculares em trabalhadoras de linha de montagem. MÉTODOS: Ensaio randomizado com 27 mulheres que trabalhavam em postura ortostática estática, com média de idade de 30,3±7,09 e massa de 64,85±13,65 e que apresentavam sintomas osteomusculares. Inicialmente, aplicou-se o Questionário Nórdico de Sintomas Osteomusculares e coletaram-se as pressões plantares pelo sistema de baropodometria computadorizada (FootWork). Posteriormente, a casuística foi dividida em grupo controle (GC), que utilizou palmilha pré-fabricada e grupo intervenção (GI), que usou palmilha customizada de etilvinilacetato (EVA) durante oito semanas. Dados baropodométricos foram novamente coletados assim como a reaplicação do questionário. RESULTADOS: Não houve diferença estatística significante na comparação entre grupos e dados baropodométricos. Notou-se, entretanto, mudança de comportamento nas variáveis de descarga em cada momento avaliado, assim como o aumento para as variáveis de média pressão de descarga e pressão plantar máxima (p<0,05). Também não foi mostrada diferença estatística significante para qualquer local anatômico entre os grupos nos diferentes momentos de avaliação. Observou-se que, dentro de cada grupo, houve redução dos níveis dolorosos na região dos pés e da coluna lombar, quando comparado momento inicial e final da intervenção (p<0,05). CONCLUSÕES: Ambas as palmilhas reduziram os níveis dos sintomas na coluna lombar e pé. Após oito semanas, houve aumento da pressão máxima e média das pressões nos pés e redução de área de superfície plantar, observados nas duas palmilhas.
OBJECTIVES: To compare the effect of the use of custom and prefabricated insoles on the behavior of plantar weight load and musculoskeletal symptoms in assembly line workers. METHODS: A randomized trial was carried out with 27 women who worked in a static standing position and had musculoskeletal symptoms. The mean age was 30.3±7.09 years and the weight 64.85±13.65 Kg. The Nordic Musculoskeletal Questionnaire was administered, and plantar pressure was determined using a computerized baropodometric system (FootWork). The sample was then divided into control group, which wore pre-fabricated insoles, and intervention group, which wore ethylvinylacetate insoles for eight weeks. Baropodometric data were collected and the questionnaire was administered once again. RESULTS: There was no statistically significant difference in the comparison between groups and baropodometric data. However, a change was noted in the behavior of the load variables between evaluations, with an increase in mean load pressure and maximal plantar pressure (p<0.05). No statistically significant difference was found between groups for any anatomical site in the different evaluations. Within each group, there was a reduction in foot pain and back pain between evaluations (p<0.05). CONCLUSIONS: Both types of insole reduced pain symptoms in the lumbar region and feet. After eight weeks of use, there was an increase in maximal and mean plantar pressure and a reduction in plantar surface area with both types of insole.