The influence of occupation on overall flexibility and lower limb and lumbar range of motion
The technological development in the working environment has prolonged sitting time for office employees. This prolonged sitting time may negatively influence innate physical capacities such as flexibility of the posterior chain; however, few studies have evaluated the influence of occupation on thi...
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Published in | Brazilian Journal of Kinanthropometry and Human Performance Vol. 11; no. 1; pp. 51 - 58 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | Portuguese |
Published |
01.01.2009
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Online Access | Get full text |
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Abstract | The technological development in the working environment has prolonged sitting time for office employees. This prolonged sitting time may negatively influence innate physical capacities such as flexibility of the posterior chain; however, few studies have evaluated the influence of occupation on this physical capacity. This assessment might contribute to establish an early intervention approach, in parallel to the occupational activity, in order to prevent musculoskektal dysfunctions. The aim of this study was to determine whether occupational activity influences posterior chain muscle flexibility during trunk-flexed posture and to analyze the body segments that are responsible for any flexibility changes. Twenty-four healthy women aged 18 to 55 years, who worked in cleaning and maintenance (n=13) and in offices (n=11), participated in the study. The following measurements were obtained to evaluate trunk flexion: fingertip-to-floor distance test (measuring tape), tibiotarsal angle, knee extension/flexion angle, hip angle, lumbar angle, and modified Chaffin technique (digital photogrammetry using the SAPo software). The groups were compared using the independent t-test. Women working in offices presented the worst fingertip-to-floor test result (p=0.0518) and a lower modified Chaffin technique value (p=0.0134), whereas their tibiotarsal and hip angles were marginally greater (p=0.0609 and p=0.0713, respectively). Women who mainly work seated presented lower overall flexibility of the posterior chain muscles than women who perform occupations that require cyclic flexion of the trunk. The tibiotarsal and hip angles seem to be the body segments responsible for this reduction in flexibility.Original Abstract: O desenvolvimento tecnologico no ambiente de trabalho gerou um aumento no tempo em que os individuos permanecem sentados enquanto trabalham em escritorios. Isto pode estar influenciando negativamente capacidades fisicas inatas como a flexibilidade da cadeia posterior do corpo, porem poucos sao os estudos que avaliaram a influencia do trabalho nesta capacidade fisica. Esta avaliacao pode contribuir para intervencao precoce e paralela a atividade ocupacional, prevenindo disfuncoes musculoesqueleticas. O objetivo foi verificar se a atividade profissional determina alguma modificacao na flexibilidade global da cadeia posterior na postura de flexao do tronco e analisar os segmentos corporais contribuidores desta modificacao. Participaram do estudo 24 mulheres saudaveis e sedentarias, entre 18 e 55 anos, que trabalhavam em manutencao (n=13) e em escritorio (n=11). Foram avaliados o teste do terceiro dedo ao solo (fita metrica) e os angulos articulares tibio-tarsico, do joelho, do quadril, da lombar e a tecnica de Chaffin Modificada por meio da fotogrametria (software SAPo) na postura de flexao do tronco. Os grupos foram comparados por meio de teste t (a=5%). Mulheres que trabalham em escritorio mostraram maiores distancias do terceiro dedo ao solo (p=0,0518) e tecnica de Chaffin Modificada significativamente menor. (p=0,0134), enquanto os angulos tibio- tarsico e do quadril mostraram valores marginalmente maiores nestas mulheres (p=0,0609 e p= 0,0713, respectivamente). Mulheres que trabalham predominantemente na posicao sentada apresentam menor flexibilidade global da cadeia posterior quando comparadas com as que realizam um trabalho que exige flexao ciclica do tronco. Sugere-se que os angulos tibio-tarsico e quadril, em conjunto, sao os segmentos corporais que contribuem para esta menor flexibilidade. |
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AbstractList | The technological development in the working environment has prolonged sitting time for office employees. This prolonged sitting time may negatively influence innate physical capacities such as flexibility of the posterior chain; however, few studies have evaluated the influence of occupation on this physical capacity. This assessment might contribute to establish an early intervention approach, in parallel to the occupational activity, in order to prevent musculoskektal dysfunctions. The aim of this study was to determine whether occupational activity influences posterior chain muscle flexibility during trunk-flexed posture and to analyze the body segments that are responsible for any flexibility changes. Twenty-four healthy women aged 18 to 55 years, who worked in cleaning and maintenance (n=13) and in offices (n=11), participated in the study. The following measurements were obtained to evaluate trunk flexion: fingertip-to-floor distance test (measuring tape), tibiotarsal angle, knee extension/flexion angle, hip angle, lumbar angle, and modified Chaffin technique (digital photogrammetry using the SAPo software). The groups were compared using the independent t-test. Women working in offices presented the worst fingertip-to-floor test result (p=0.0518) and a lower modified Chaffin technique value (p=0.0134), whereas their tibiotarsal and hip angles were marginally greater (p=0.0609 and p=0.0713, respectively). Women who mainly work seated presented lower overall flexibility of the posterior chain muscles than women who perform occupations that require cyclic flexion of the trunk. The tibiotarsal and hip angles seem to be the body segments responsible for this reduction in flexibility.Original Abstract: O desenvolvimento tecnologico no ambiente de trabalho gerou um aumento no tempo em que os individuos permanecem sentados enquanto trabalham em escritorios. Isto pode estar influenciando negativamente capacidades fisicas inatas como a flexibilidade da cadeia posterior do corpo, porem poucos sao os estudos que avaliaram a influencia do trabalho nesta capacidade fisica. Esta avaliacao pode contribuir para intervencao precoce e paralela a atividade ocupacional, prevenindo disfuncoes musculoesqueleticas. O objetivo foi verificar se a atividade profissional determina alguma modificacao na flexibilidade global da cadeia posterior na postura de flexao do tronco e analisar os segmentos corporais contribuidores desta modificacao. Participaram do estudo 24 mulheres saudaveis e sedentarias, entre 18 e 55 anos, que trabalhavam em manutencao (n=13) e em escritorio (n=11). Foram avaliados o teste do terceiro dedo ao solo (fita metrica) e os angulos articulares tibio-tarsico, do joelho, do quadril, da lombar e a tecnica de Chaffin Modificada por meio da fotogrametria (software SAPo) na postura de flexao do tronco. Os grupos foram comparados por meio de teste t (a=5%). Mulheres que trabalham em escritorio mostraram maiores distancias do terceiro dedo ao solo (p=0,0518) e tecnica de Chaffin Modificada significativamente menor. (p=0,0134), enquanto os angulos tibio- tarsico e do quadril mostraram valores marginalmente maiores nestas mulheres (p=0,0609 e p= 0,0713, respectivamente). Mulheres que trabalham predominantemente na posicao sentada apresentam menor flexibilidade global da cadeia posterior quando comparadas com as que realizam um trabalho que exige flexao ciclica do tronco. Sugere-se que os angulos tibio-tarsico e quadril, em conjunto, sao os segmentos corporais que contribuem para esta menor flexibilidade. |
Author | Sera, M T Pripas, D Malvestio, R A Aliberti, S Kimura, A A Sellmer, A E Sacco, ICN Queiroz, BWC Kieling, I |
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