| Summary: | 碩士 === 大同大學 === 工業設計學系(所) === 97 === Recliner chairs that incline forward in the market intend to help the elderly to sit and stand with changes seat pan inclination angle. The paper explores whether such forward inclination does really help the elderly people and what the angles are will help the elder sit-to-stand and stand-to-sit.
In field investigation and questionnaire of 30 elderly people about their daily life, it was found that it was difficult for them to stand up after sitting for a long time. In difficulties, they reply on chair armrests. They lacked of understanding of recliners.
The experiment was divided into 2 stages. In the first one, the researcher compared the feeling of 30 elderly people on no inclination angle (0°) and with inclination angle (30°) and with or without armrests in their sit-to-stand and stand-to-sit. After a two-way ANOVA with blocking, the results showed, with help of inclination angle and armrest in sitting/standing, peak pressure was reduced and minimum pressure was increased. Reducing the difference between the two pressure values did shorten the time of sit-to-stand: In the 2nd stage, the same 30 elderly people were tested with more inclination angle with armrests. After a two-way ANOVA with blocking, sit-to-stand results were better with help of armrests. The angle of 40° gave best result. The time was also significantly shorter. In stand-to-sit, angles of 20°, 30° and 40° gave better results. Scores were given on subjective feeling on easiness, comfort and safety. After LSD testing, the results showed self-chosen angle was the best. With anthropometry consideration, through regression analysis, chair inclination angle could be approximately predicted by the user’s weight. Hopefully, the findings would be useful for future design reference and application in real life.
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