Assessment of changes in spine curvatures and the sensations caused in three different types of working seats

Abstract

-Aims -This study aimed to evaluate the changes in the spine curvatures and the sensations caused by different types of seats: standard, ischial support and salli. Methods -The analyzes were performed by the kinematics and scales of discomfort and pain in 14 healthy subjects. The data collection occurred in three days, one day for each type of seat. The subjects answered questionnaires and were assessed for placement of kinematic markers used to measure the thoracic, thoraco-lumbar and lumbar angles. Each trial was conducted in a sixty-minute period on each chair. Results and conclusions -The results showed that the salli seat type causes larger lumbar angles, which is consistent with the maintenance of lumbar lordosis. Likewise, the salli seat showed smaller thoraco-lumbar angle, which is consistent with smaller inferior thoracic kyphosis. Paradoxically, the ischial support seat produced less discomfort and pain than salli type. And finally, the longer the sitting position was the higher the score on the discomfort scale.

Análise funcional de indivíduos com lombalgia ocupacional

“…As dores lombares não são causadas apenas por posturas inadequadas ou por tempos prolongados em sedestação, o ambiente em que o colaborador está inserido influencia, de forma direta, a exemplos os assentos. O assento salli mantém o ângulo ideal da lordose, porém, o assento com suporte isquiático provoca menos algias, mas vale ressaltar que ambos geram incômodos após longas horas de trabalho sentado (Santos & Araújo, 2017).…”