George Nissen and Larry Griswold invented the modern trampoline in 1936 by adding coiled springs, a frame, and safety mats to create a rebounding device. They went on to found the Griswold-Nissen Trampoline & Tumbling Company. Trampolines are now used in gymnastics, diving, circus acts, and other sports for training purposes. While trampolines provide exercise and fun, they also carry injury risks that have led some medical professionals to advise against their use.

1. By Alexa K.

2.  In 1936, gymnast and diver, George Nissen,
and tumbler, Larry Griswold, created
modern trampolines with coiled springs, a
frame, and mats pulled across the springs.
Coiled Springs
Frame and mats

3.  Lived from February 3, 1914 to April 7, 2010
– he lived for 96 years.
 George and Larry built the first trampoline in
a garage, and he also made trampoline an
Olympic sport in 2000.
George Nissen

4.  Was born on September 17, 1905 to August
24, 1996 – 91 years.
 He was a high level gymnast and tumbler.
 Larry and George created a company called
Griswold-Nissen Trampoline & Tumbling
Company.
Larry Griswold

5.  Gymnasts use trampolines for training and to
practice tricks.
 Circus performers also use trampolines for
circus acts, with crazy tricks going on the
trampolines.
 Divers use trampolines for training for the
water, so they get the feel of they new dive
an easier way.
Athletic Uses

6. Mini – Tramps
 There are lots of “mini – tramps” that are used for
different purposes. Like….
 Fitness/Rehabilitation
 Kids
 Gymnastics
 Diving
 Circus

7. Different Shapes & Sizes
 Square
 Rectangle
 Circle
 Octagon

8. Trampolines with Nets
 Some trampolines have build in nets. In some
designs of a netted trampoline, there are no
coiled springs, the bounce comes from metal
spirals swirling around the frame.
 The net is supposed to make jumping on a
trampoline safety, and less of a risk of falling
off.
Netted
Trampoline
with Springs
Spring less
trampoline without
net

9. Other Trampoline Uses
 Firemen use trampolines to catch people
jumping out of burning buildings.
 In World War 2, plane pilots were
trained on trampolines.
 On water, trampolines are a fun way to play
with family and friends.

10. Should I Buy A Trampoline?
 If you are debating whether you should buy a
trampoline or not, look at the following
slides that show the benefits and non-
benefits of purchasing a trampoline.

11. Pros Cons
 Exercise – jumping on your
trampoline is good exercise.
 Fun – jumping is fun, social,
and you can try new tricks, or
just jump high.
 Safety #1 – With spring pads,
its almost impossible to get a
foot caught.
 Safety #2 – If your worried
about falling off, don’t
worry, draw a big X in the
middle, and make a rule that
you have to jump on the X.
 When it snows, you have to
shovel the snow off it, or its
too much weight on the
springs.
 If you are fooling around, you
could get a spinal injury.
 Doctors often do not
recommend trampolines as
they see lots of injuries.

12.  http://en.wikipedia.org/wiki/Trampoline
 http://www.intlgymnast.com/index.php?option=com_content&view=article&id=1452:trampoline-
 http://en.wikipedia.org/wiki/Trampolining
 http://en.wikipedia.org/wiki/Larry_Griswold
 http://en.wikipedia.org/wiki/George_Nissen
 http://sultana.1stdibs.com/itemdetails.php?id=226485
 http://images.craigslist.org/3n23m13p45Y25V65Q0a7l48e04409663016c2.jpg
 www.cirquedusoleil.com
 www.airbornetrampoline.ca/Trampoline-Deck.gif
 www.sundancetrampolines.com/.../1/0/100_0451.jpg
 www.flickr.com
 www.sportstek.net/images/mini-tramp.jpg

http://www.usedandnewtrampolines.com/wp-content/uploads/2010/04/mini-trampoline.jpg
 http://www.comparestoreprices.co.uk/images/eu/eurotramp-euro-team-mini-tramp.jpg
 http://www.circus4youth.org/images/img/200711051409490.BA%202.jpg

13. Bibliography Continued
 http://www.comfortchannel.com/images/Extreme_Hero.jpg
 http://www.okokchina.com/Files/uppic11/Mini%20Trampoline%20with%20handle612.jpg
 http://www.nyworms.com/images/question%20marks.JPG
 http://inflatable-water-trampolines.com/wt_img/gwt-10.jpg
 http://cdn.dealsdirect.net/m/products/222/24222/1/product1_24222_600x6
00.jpg
 http://www.comparestoreprices.co.uk/images/di/dino-cars-12ft-round-
trampoline-fu12--12ft.jpg
 http://shop.playsystemsdirect.com/images/MagicCircle16OctagonNoCage.jpg