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No.74 (2009/2) >

Title :2次元動作分析よる学校用家具の検討 -机・椅子の号数変化による大学生の動作変化-
Title alternative :Examination of School Furniture by Two Dimentional Motion Analysis Change in university students' movements according to change in height of desks and chairs
Authors :福田, 英昭
金城, 義樹
Authors alternative :Fukuda, Hideaki
Kinjo, Yoshiki
Issue Date :Feb-2009
Abstract :The two dimentional motions were measured for fifteen university students who were using furniture for the school. The desks and the chairs used were the numbers of sizes from the second to seventh sizes of Japanese Industrial Standard, and they were wooden desks and chairs, the height were able to be adjusted. The measurement was based on the height of the desk and the chair of the proper sizes calculated from the stature of the students. The height of the desk and the chair was changed into three stages, those were the proper size, the minus one level size and the plus one level size of JIS. It assumed that the study scene in the school, movements of seating and standing up were analyzed with two dimentional motion analysis system. The movements were measured by putting on reflective markers to the vertex, pinna, acromion, radius, carpus, trochanter, tibia, ankle and tiptoe of the subjects. And the movements were taken of pictures with a digital video camera. The result of this experiment was as follows. When sitting on a chair, the angle of the waist had become small in low height of the desk and the chair. At the same time, the subjects were bending their knees and stooped. On the other hand, at the movements of standing up from the chair, the amount of the movement of the waist and the shoulder had decreased by rising of the height of the desk and the chair. At the same movement, the waist was greatly bent and the upper part of the body turned down toward the horizon by lowering of the height. It is expected that a lot of loads rest upon the waist in low height of the desk and the chair.
Type Local :紀要論文
ISSN :1345-3319
Publisher :琉球大学教育学部
URI :http://hdl.handle.net/20.500.12000/11215
Citation :琉球大学教育学部紀要 no.74 p.37 -45
Appears in Collections:No.74 (2009/2)

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