USE OF THE CONTINUOUS WAVELET TRANSFORM TO CHARACTERIZE THE 30S MAXIMAL TEST IN SWIMMING
Leandro Machado, Susana Maria Soares, João Paulo Vilas‐Boas · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · 2007
Summary . A total of 72 swimmers of different maturational status performed a 30s maximal test in front crawl swimming, while their i nstantaneous speed was being recorded by a cable speedometer. The data treatment begun by the removal of the start, glide and final (wall arrival) phases of the veloci ty/time curve, performing than a continuous wavelet transform of the remaining signa l. It was possible to discriminate two, or more, regions of different spectral content in the instantaneous velocity curve. To the points delimiting those regions, we loosely cal l fatigue thresholds. To confirm the validity of those fatigue thresholds, a periodogram was computed for each interval upon which the test was divided. Most of the swimmers di splayed one or two fatigue thresholds. It was found that the younger swimmers presented more thresholds than the older ones.