STROKING CHARACTERISTIC VARIATIONS IN THE 100-M FREESTYLE FOR MALE SWIMMERS OF DIFFERING SKILL

The purpose of the study was to identify the stroking characteristics such as rate and length used by male swimmers of differing skill and t o analyze the variations of velocity, stroke rate, and stroke length d uring the course of the race. The performance of 442 male subjects inc luding 40 swimmers competing at an international 100-m freestyle event was videotaped and later analyzed to measure velocity, stroke rate, a nd stroke length on each lap of the race. Stroke length seemed to be t he best predictor of swimming velocity. Different levels of performanc e could be discriminated by the variations of velocity, stroke rate, a nd especially stroke length throughout the race. Besides higher values for velocity, stroke rate, and stroke length, the best swimmers were characterized by the capacity to maintain these parameters constant th roughout the course of the race. Such results could be used by coaches to assess technique and training for certain racing strategies.