Research is aimed at monitoring the evolution of swimming performance of visually impaired swimmers (M.S.) with international classification S 13 on selected distances. Given the freqency of occurrence are minitored the performances at distances of 100 meters freestyle and 50 meters freestyle.
Time affects two Paralympic cycle, the peaks in competitive Summer Paralympic Games in 2004 (Athens) and 2008 (Bejing). Research clarifies some of the sports training patterns of the proband and explains anomalous performances in the period.
The results are evaluated graphically.