The effects of armrests and high seat heights on lower-limb joint load and muscular activity during sitting and rising.

@article{Arborelius1992TheEO,
  title={The effects of armrests and high seat heights on lower-limb joint load and muscular activity during sitting and rising.},
  author={Ulf P. Arborelius and Per Wretenberg and Fredrik Lindberg},
  journal={Ergonomics},
  year={1992},
  volume={35 11},
  pages={1377-91}
}
The loading moment of force on the hip, knee, and ankle joints of nine healthy men rising from four different types of stools were compared, together with the levels of myoelectrical activity (EMG) in four leg muscles. Two types of stool (stand stools) had higher seats than a normal chair. The other two were of ordinary seat height, but one also had armrests. The bodyweight carried by the different stools when sitting was also measured, and the subject estimated the effort required for each… CONTINUE READING