New to this forum, but a Masters swimmer who has used USRPT exclusively for the last 9 months.
It took me 6 months of 5 Xs a week of USRPT before I could say absolutely that USRPT was the reason for my improvement. So, 1. you need to execute the sets as proposed by Dr. Rushall and 2. you need to be patient.
Got it! We'll have a look and get back to you ASAP!