The influence of trunk inclination on muscle activity during sitting on forward inclined seats.
نویسندگان
چکیده
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 was recorded. There was observed statistical influence of the trunk inclination on erector spinae, gastrocnemius lat. and tibialis anterior (p < 0.05). Especially, the inclination of seat pan influenced tibialis anterior activity (10%), although EMG measured during sitting did not exceed 20% of MVC.
منابع مشابه
The influence of trunk inclinaion on muscles activity during sitting on forward inclined seats
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 1...
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ورودعنوان ژورنال:
- Acta of bioengineering and biomechanics
دوره 12 4 شماره
صفحات -
تاریخ انتشار 2010