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Sitting for much of the day may pose significant health risks, with one study suggesting people who sit regularly for prolonged periods may have higher mortality rates than those who do not. [1] [2] The average person sits down for 4.7 hours per day, according to a global review representing 47% of the global adult population. [3]
Sitting volleyball was first demonstrated at the Summer Paralympic Games in 1976 and was introduced as a full Paralympic event in 1980. The 2000 games was the last time standing volleyball appeared on the Paralympic programme.
After some drawing I noticed that the shape of the chair had become so simple that it was merely a ball. I pinned the full scale drawing on the wall and sat in the chair to see how my head would move when sitting inside it. Being the taller one of us I sat in the chair and my wife drew the course of my head on the wall.
Chair, c. 1772, mahogany, covered in modern red morocco leather, height: 97.2 cm, Metropolitan Museum of Art (New York City) A chair is a type of seat, typically designed for one person and consisting of one or more legs, a flat or slightly angled seat and a back-rest.
A height-adjustable desk or sit-stand desk can be adjusted to both sitting and standing positions; this is purported to be healthier than the sit-only desk. Sit-stand desks may be effective at reducing sitting time during the work day between 30 minutes and two hours per working day but the evidence is low quality.
7 bad health efects of sitting down. 1 comment. 8 More photos needed. 1 comment. 9 research suggesting bad effects of sitting. 1 comment. 10 Who invented sitting?
Sit-down: A 320cc Rotax engine was used for development. The Rotax engine required a larger planing surface and sufficient induction for its air cooling, so Jacobson developed an entirely new sit-down model to adapt. Jacobson applied for a patent on the sit-down model in February 1968 and received the patent a year later in February 1969.