row of spectator seats approximately 2.5 m above and 15 m away from the side of the pool. Race analysis software compiled in Matlab 2012 (The MathWorks, Inc., Natick, MA, USA) was used for calibration and image processing to obtain SR, SL, and swim speed (S) for every stroke cycle. Four poolside marks
David Simbaña Escobar, Philippe Hellard, David B. Pyne and Ludovic Seifert
Daniel J. Daly, Stefka K. Djobova, Laurie A. Malone, Yves Vanlandewijck and Robert D. Steadward
A video race analysis was conducted on 100-m freestyle performances of 72 male and 62 female finalists at the Sydney 2000 Paralympic Games. Races were won or lost in the second half of each 50-m race lap and differences in speed between swimmers were more related to stroke length than stroke rate. Within-race speed changes were more related to changes in stroke rate. Stroke rate changes were also responsible for speed changes between qualifying heats and finals in the first part of races, while stroke length was responsible for better speed maintenance at the end of races. Results indicate that Paralympic finalists use race speed patterns similar to able-bodied elite swimmers.
Daniel J. Daly, Laurie A. Malone, David J. Smith, Yves Vanlandewijck and Robert D. Steadward
A video race analysis was conducted at the Atlanta Paralympic Games swimming competition. The purpose was to describe the contribution of clean swimming speed, as well as start, turn, and finish speed, to the total race performance in the four strokes for the men’s 100 m events. Start, turn, and finish times, as well as clean swimming speed during four race sections, were measured on videotapes during the preliminary heats (329 swims). Information on 1996 Olympic Games finalists (N = 16) was also available. In Paralympic swimmers, next to clean swimming speed, both turning and finishing were highly correlated with the end race result. Paralympic swimmers do start, turn, and finish slower than Olympic swimmers but in direct relation to their slower clean swimming speed. The race pattern of these components is not different between Paralympic and Olympic swimmers.
Yuji Matsuda, Yoshihisa Sakurai, Keita Akashi and Yasuyuki Kubo
velocity during swimming is much more difficult and complex than it is for land movements, and the experimental environment for monitoring the CoM velocity during swimming is quite limited. Alternatively, the sacral marker or fixed-point method has been used for race analysis during competitions and