抄録
The purpose of this study is to understand the needs of people who use wheelchairs and to design an appealing aesthetic pattern for pants. In the first phase, we accurately analyzed how the peripheral shape of buttocks varies when one sits on a chair. Many case studies on the peripheral shape of buttocks can be found in related literature. Since it is not easy to measure the peripheral shape of buttocks, the people being tested placed their feet on a tall footrest for measurement purposes so that both knees and hip joints were flexed to 90 degrees. In this study, we used an impression material alginate to accurately measure the peripheral shape of buttocks on a chair, and compared our results with those from conventional simulated experiments. As a result, the experiment was so stable and its success rate reached 100%. The experiment could also be performed without touching sensitive body parts. From the collected alginate mold, the amount of body surface variation on the chair could be accurately measured and the shape of buttocks could also be observed. The back side of the femoral region, in fact, becomes flat on the chair, whereas it was of round shape in the conventional simulated experiments. Furthermore, we identified a hollow in the hipbone region due to the impact of body weight on the hipbone of buttocks. We also verified that the expansion and contraction rate differed by approximately three times in a certain part of the body between our experiment and conventional ones. From the above results, we reconfirmed that the amount of body surface variation should be added to the pattern of pants.
