• population 3,623,790, Students population 544,300 people (BPS Kabupaten Bandung, 2020).
• The ever-increasing population density causes a high need for residential houses. Especially boarding houses (Poetra, 2016).
• The type of narrow space residential furniture that is suitable for supporting comfort and productivity is simple and minimalist (Arsaline, 2021).
• Students have a learning environment that can pose a risk of health problems (Rahmayana, 2021).
• MSD disorders are reported to continue to increase in young productive age, the highest contributor to disability globally (Lubis, 2021).
• Creating good ergonomic designs for learning activities is critical to maximizing worker performance and minimizing the risk of Musculoskeletal Disorder (Hedge 2017).
Environment Factor
a. The type of furniture that is suitable to support comfort and productivity for residences with narrow spaces should be simple and minimalist (Arsaline, 2021).
b. Furniture design must suit the person and workplace so that it is comfortable, not stressful, has high productivity and minimizes the risk of Musculoskeletal Disorder or in short MSD (Hedge, 2017).
Health Threat
a. Musculoskeletal conditions are a major contributor to disability across the world. The number of people living with musculoskeletal conditions and related functional limitations, is increasing rapidly (WHO, 2022).
b. Students have a learning environment that can pose a risk of causing health problems. A position that is not neutral in a static condition for a long period of time will cause the muscles to contract excessively (Rahmayana, 2021).
c. To overcome MSD conditions when sitting in a cross-legged position, the solution is to design a cross-legged chair using an anthropometric and ergonomic approach.
Lesehan Position
example of Lesehan position.
Nordic Body Map Questionnaire
To get an accurate real life data, this research was using nordic body map questionnaire filled by 153 respondents (all college student) to know which body part that experienced pain.
From 153 respondents it was concluded that there are 8 parts of human body that experienced pain on scale B, D, and C.
Idea
sketches of the chair frame base.
sketches of the chair cushion design.
3D Modeling
material used for first try prototype production: holo iron 30 millimeters.
cushion material: fluffy foam mix with firm foam, brown suede fabric.
1st Try Prototype
Results of 1st try prototype.
1. SUPPORT CERVICAL SPINE
2. SUPPORT THORACIC SPINE & SCAPULA
3. SUPPORT LUMBAR SPINE
4. SUPPORT SACRUM & COCCYX
Recline Level
This 1st picture from left position is ideal for learning activities because the respiratory tract and flow are smooth, and the body position is upright.
Prototype Test Results
To get an accurate real life test results, this test process was conducted with 15 user trying the chair for about 30 minutes doing basic studying activities (reading, writing, typing on laptop).
