Development tools students' speed qualities in a period of swimming butterfly

Three trainings systems are developed for speeding up for students with the middle level of qualification. 9 sportsmen took part in research. Among them there are 6 youths and 3 girls. For three months of trainings for the sportsmen of the second group it was exhaust 9 the most essential technical elements in swimming on 50 m. A middle index of improvement of results is 1,46 s. The considerable improvement of results is marked for students the first and third groups (used a method: to power and speed endurance)