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A life net, also known as a Browder Life Safety Net or jumping sheet, [1] is a type of rescue equipment formerly used by firefighters. When used in the proper conditions, it allowed people on upper floors of burning buildings an opportunity to jump to safety, usually to ground level.
Although each mat may be made of different foam, they generally have similar vinyl enclosures. 14- to 18-ounce polyester laminated vinyl is usually used in all folding mat applications. The vinyl covers should be fire-retardant (class A), puncture and mildew-resistant, and antibacterial to help maintain good hygiene.
The trampoline-like life nets once used by firefighters to catch people jumping out of burning buildings were invented in 1887. The 19th-century poster for Pablo Fanque's Circus Royal refers to performance on trampoline. The device is thought to have been more like a springboard than the fabric-and-coiled-springs apparatus presently in use. [1]
Showing a video of his 7-year-old son on a trampoline with two teens, the dad explained, “They started jumping with him and he just went with it” for approximately 45 minutes.
The four heights, measured by the distance the subjects’ feet were elevated above the trampoline bed, were 18, 37, 75, and 100 cm. A 5- to 10-min rest period was provided between each jumping level." The jump heights in inches were: 7", 14.6", 29.5" and 39.4". The NASA study did not involve a rebounder or mini-trampoline.
Trampolining or trampoline gymnastics [1] is a competitive Olympic sport in which athletes perform acrobatics while bouncing on a trampoline. [2] In competition, these can include simple jumps in the straight, pike, tuck, or straddle position to more complex combinations of forward and/or backward somersaults and twists.