Clinical Studies


There are suggestions which state that application of extension devices lead to increase in length and circumference of male reproductive organ but there are fewer scientific studies which have been carried out in this field.


Study carried out by Dr. Ronas Tajhiz Teb suggest that these extension devices increases length and circumference.


The study was carried out on people who complained about small size at the clinic between Sept 15, 2008 & Dec 15, 2008. After carrying out measurements in both flaccid and stretched forms, patients were asked to wear extension device for 4 to 6 hours per day during the first two weeks and then nine hours per day till the end of the third month.

Training was also carried out on how to increase device force during predetermined levels. After the end of first and third month, patients were measured with the baseline.


23 people with mean age of 26.5 ± 8.1 years were involved in the study which resulted in flaccid length increasing from 8.8 ± 1.2 cm to 10.1 ± 1.2 cm and 10.5 ± 1.2 cm in the first and third months of follow up which was statistically significant. Stretched length also increased from 11.5 ± 1.0 cm to, respectively, 12.4 ± 1.3 cm and 13.2 ± 1.4 cm during the first and second follow-up.


As per the findings, the device led to increase in length and girth using the device.