LI YANG OF CHINA CLOCKED 28:09 secs in 50M BACK STROKE SWIMMING WOMEN. THE LAST CISM RECORD IS 28:53 SECS
THIS CAN ALSO BE A WORLD RECORD SUBJECT TO THE APPROVAL OF FINA (WHICH IS THE WORLD WIDE SWIMMING SPORTS ORGANISATION) AS IT IMPROVES THE ORIGINAL WORLD RECORD WHICH IS 28:16 SECS.