ESTIMATED CONTRIBUITION OF LEGS IN THE CRAWL SWIMMING
DOI:
10.51283/rc.v25i2.12434Keywords:
Velocity Disturbance Method (VPM), Crawl Swim, Leg PropulsionAbstract
The aim of the study was to evaluate the relative contribution of lower limbs in the crawl swim using the velocity disturbance method (VPM) in athletes of different skill levels. 106 swimmers participated in the study, they were equally divided into two groups according to their skill level (competitive and recreational). The swimmers performed 8 maximum sprints of 15 meters by swimming crawl in 4 different conditions with a minimum of 2'30"between sprints (full swim; complete with parachute; only kick and; kick with parachute). All sprints were filmed with an underwater camera (GoPro Hero4 Black), and the parameters of interest recorded were: average swimmer speed, active drag and swimming power in each of the conditions. For statistical comparison of the relative contribution of lower limbs between groups a test-T was performed. The significance level adopted was p <0.05. The main result showed in the comparison between groups that the relative contribution of lower limbs, were significantly higher for the recreational group, 33.9 ± 23.1% vs. 22.5 ± 10.3% (p = 0.02). Finally, the VPM proved to be an easy to perform technique capable of assessing the relative contribution of lower limbs in the crawl swim, making this information accessible to coaches.
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