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From Corlett & Eklund (1984)
How does a backrest work?
Graphic with permission
Rani Lueder has consulted in occupational ergonomics and product design research since 1982. Her activities in sitting and seating include co-organizing the Second International Symposium on Seating, held in Tokyo. Her second edited book, on sitting postures (Taylor & Francis), is sold worldwide. Since 1988, she continues to consult on sitting posture on extended retainer for a range of organizations in Japan. She served on the seating subcommittee for the American National Standard Institute guideline ANSI HFES 100-2007. She has consulted in the design of more than 250 lines of seat design and other products that support posture. She edited the book Ergonomics for Children; Designing products & places for toddlers to teens (2008, Taylor & Francis)