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This is an ergonomic Seat Formula to avoid lower back pain |
jakarta, arguably the back pain has become a typical office employee's illness a day sitting in front of the computer. in addition to the wrong sitting position, seat factor can also be a trigger. actually there is a formula to determine the size of an ergonomic seating"to prevent the occurrence of lower back pain, an ergonomic chair should be made according to anthropometry of the body. shape and size of the seat can affect the position of the arch of the spine, "said dr. dr. sri prasetyowati, ninis sp. physical medicine specialist kfr and rehabilitation of the doctorate of medicine in a promotional event in medicine, wednesday (6/2/2013).in the disertasainya, dr. ninis explained that non-specific lower back pain a lot happened due to an appropriate sitting position so that the curved spine changes. the edges can increase muscle tension in the lower back.in addition, various studies also found that women are more susceptible exposed lower back pain due to panggulnya structure with different men. sitting for a long time will increase the load on the lower part of the spine is accepted. this burden is greater than that received the body while standing.dr. ninis has done a long research to determine the size of an ergonomic seat formula. it's just that this formula is created by using a sample of high school students. nevertheless, dr. ninis confessed this formula can be applied to the employees of the office."i am researching on the high school kid in height about 150-170 cm. office of the employee's average height of it so it can be used also for the employees of the office," frank dr. ninis.the ergonomic seat formula considering the length of the legs or limbs and the size of the width of the pelvis. the length of the foot is divided into 2 parts, namely the length of the upper limb (pta) and the length of the lower limb (ptb). this measure is divided into 3 categories.the size of a small length of the pta said if 42-45 cm in length, is being said if 46-49 cm and large if its length is 50-55 cm. size of the ptb are said to be small if the length is 37-39 cm, medium length if 40-42 cm and large if its length is 43-45 cm. width of the pelvis, it is said to be small if the width is 26-28 cm, said to be moderate if the width 29-31 cm and large if the width is 32-34 cm.to determine the size of the chair to be used, the categorisation taken if it meets at least two of the same size. for example, a subject has a size of pta 48.5 cm (medium), the ptb on cm (small) and pelvic width 29 cm (medium), then he was put in the category.whereas the determination of the appropriate seat size formula pta, ptb and the width of the pelvis, are as follows:-for small groups, then the length of the pedestal seats 41 cm, height 38,5 cm covering of plinth and pedestal seats 37 cm wide.-for the group being, then a long pedestal seats 45 cm high pedestal seats, 41.5 cm wide and 40 cm pedestal seats.-for large groups, then the length of the base population 49 cm, 44.5 cm high pedestal seats and pedestal seats 43 cm width.for the backrest, the angle of incline is 100 degrees toward the back. in comparison, chairs in the school currently has a slope of 90 degrees so that the back is in an upright position.(pah/vit )
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