形態和功能生物學變化，是衰老迅速增長相關的主要挑戰之一；老年人身體能力的下降，明顯地增加較長的就座時間，如何將座椅的設計融入到適合個人需求的座椅工具上將是非常重要。然而，座椅設計本身並不具備便攜式用途，因此坐墊設計便成為可移動使用時的首選；另一方面，坐墊設計僅聚焦於臀部，並未廣泛關注在整個身體上的考慮。本研究的目的為改進一項更全面的坐墊設計，納入更廣泛的考量例如顧客的聲音、人因工程學原理和專家判斷，促進在不同座椅上的良好就座。本研究的對象為印尼和台灣的老年人，印尼與台灣都是老年人口比例很高的國家。 本研究中使用的方法為，以品質功能展開(QFD)為框架來取得設計元素，以感性工程來了解客戶需求，使用層級分析法(AHP)來確定客戶需求的重要性。本研究的結果表明，客戶要求包括「舒適」、「實用」、「便攜」、「良好的材料質量」、「多功能」、「價格適中」、「安全」和「靈活」；坐墊的技術要求包括，「形狀/形狀」、「顏色」、「圖案」、「材料」、「價格」、「尺寸」和「功能」。 建議增加到設計中的功能包括，坐墊、背靠、小腿支撐、腰部支撐、多功能安全帶，以及額外的口袋。本研究得出的結論是，品質功能展開、感性工程和層級分析法可更全面地成功應用於坐墊設計上； 總體而言，Wilcoxon符號檢定的結果表明受訪者對提出的擬議設計是感到滿意的；與舊的設計相比，「舒適」、「材料質量」、「多功能」、「獨特的設計」、「安全」和「實用」等設計因子有顯著差異。 同時，受訪者對擬議設計應具備「經濟適用」的要求，表達出不認同的結果。

Morphological and functional biological changes are the main challenges associated with rapid aging population growth. The decrease of elderly physical ability increases the duration of sitting significantly. Consequently, to make a chair design as a seating tool tailored to an individual’s needs is very important. However, chair design does not provide the use on a portable basis; thus, the seat pad design is preferred for mobile use. On the other hand, the seat pad design is only focused on the buttock part and is not extensively concerned with the whole body parts consideration. The purpose of this study is to improve a more comprehensive seat pad design to promote good seating in various kinds of chairs with broader consideration, such as the voice of customers, ergonomic principles, and expert judgment. The subject of this study is the Indonesian and Taiwanese elderly as two of the countries that have a large number and percentage of elderly. The methods used in this study are Quality Function Deployment (QFD) as the framework to capture the design elements, Kansei Engineering to apprehend Customer Requirements, and Analytic Hierarchy Process (AHP) to determine the Customer Requirement importance. The result shows the Customer Requirements for this study are: “Comfortable”, “Practical”, “Portable”, “Good material quality”, “Multifunction”, “Affordable”, “Safe”, and “Flexible”. The Technical Requirements for the seat pad are “Shape/Form”, “Color”, “Pattern”, “Material”, “Price”, “Size”, and “Feature”. The functions added to the proposed design are seating pad, backrest, calf support, lumbar support, multifunction gait belt, and additional pocket. This study concludes that QFD, Kansei Engineering, and AHP are successfully applied to improve a seat pad design more comprehensively. Overall, the result of the Wilcoxon-signed test shows that the respondents felt satisfied with the proposed design since the result shows that “Comfortable”, “Good Material quality”, “Multifunction”, “Unique design”, “Safe”, and “Practical” are better and have significant differences with the old design. Meanwhile, the “Affordable” requirement of the proposed design is not satisfied by the respondents.

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