Materials suitable for sedentary lifestyle products

Exclusive study, available to me as early as August 10, 2019 (the date of the Word file's last modification), but never published in commercial journals or portals; handed out only to a few individual university professors - who, I am certain, have no affiliations whatsoever, otherwise the study would have been superseded - for educational purposes or non-profit projects but even that never happened, and it's better that way. Nevertheless, it remains highly relevant today in 2026, as there are no independent or affiliated studies providing evidence or materials capable of surpassing it for its intended purposes.