To reiterate, the use of traction or weights to enlarge the penis is based on the principle of tensile force and the body’s ability to adapt under such influence. This principle of has also been practiced for over 2,000 years by cultures around the world. The neck lengthening exploits of the Paduang tribe of Burma is a well-documented example of such practices, if your interested, visit Chiang Mai website. As well as the lip and earlobe stretching practices of certain African tribes.

Clinical Studies

During the 1990’s research and development team worked exclusively on the effect of traction on the penis body. Notable in their studies was a major medical breakthrough, that traction devices could have a dramatic affect on the growth of the penis. Researchers noticed approximately 20-30% increases in the length of the penis over a 2 month period.

The minute amounts of stress applied by the device result in the regeneration of skin cells, which in turn increases in both length and girth. Over the past decade, penis stretcher has continuously worked to improve the design features of the original traction device.

DanaMedic and penis extender clinically test

Based in the principle of tissue reaction at pressure, Dana Medic created a penis extender device labeled as Jes-Extender, this device got clinical tested in 1998 in 18 males and presented the results in international symposium. The bellow chart shows the results:

The science of penis enlargement conclusion was:

“The average result of Jes-Extender treatment was an increase in erect length of 2,8 cm (1.1 Inch) after 1100 hours at 1200 g traction force. The corresponding flaccid increase is 1,9 cm or 0.75 inch ”

Device Review

This site compile a penis extender review database of most popular brands avaliable on the market access it here.