The influence of trunk inclinaion on muscles activity during sitting on forward inclined seats
نویسندگان
چکیده
The prolonged low-level static load on the back during sitting can be hypothesized to an effect back muscles adversely. Westgaard and DeLuca [1] indicated that prolonged low-level activity of muscle influenced on higher muscle activity of other muscle group. Fifty four years ago Keegan [2] established the relation between trunkthigh angle and lumbar spine curvature. Keegan found that angle of 135 deg would restore the lordosis and give an optimal lumbar curve. Nearly forty years ago many scientists argued that sitting with right angles is biomechanically incorrect [3, 4]. Therefore the aim of the study was the comparison of back and lower extremity muscle activity during sitting on seatpan forward inclined seats.
منابع مشابه
The influence of trunk inclination on muscle activity during sitting on forward inclined seats.
The aim of the study was to estimate the influence of trunk inclination on muscle activity during sitting on forward inclined seats without backrest. The group consisting of thirteen healthy women was examined. Based on anthropometrical data two types of sitting position were adopted with two different angles between thighs and trunk: 120 and 135 degrees. Bioelectrical activity of five muscles ...
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