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Hydrodynamics plays a major role in swimming. Even minimally reduced resistance to movement through the water leads to improved outcomes. Long time swimming in circles discussed whether we should abolish the use of hydrophobic polyurethane swim suits. A study conducted by a group of researchers at the University of Bologna and Verona (Italy) dealt with efektimaprimene different types of swimming cap resistance movement through the water when swimming. During phase sliding during the race the swimmer's part time maid head is an important point in a collision with water particles and swimming part time maid cap, although it covers a small part of the body can have an impact on resistance. The aim of this study was to determine the effects of passive resistance to three different types of caps, including: Lycra cap, silicone cap and called. silicone'''' helmet part time maid without seams. In a sample of 16 swimmers were tested at three speeds (1.5, 1.7, 1.9 ms) and passive resistance was recorded five times at all speeds. The results showed that the resistance of 5-6.5% lower with silicone caps without seams that of normal silicone caps at all speeds and that between silicone caps and hats made of Lycra no difference. The authors explain the differences part time maid in resistance to the type of material and the presence / absence of seams because silicone cap Seamless possesses greater rigidity and not allow the formation of prominence that increase resistance. '' Swimmers should take into account when selecting the cap if they want to improve their swimming dynamics'' the authors conclude. The research is published in januarskoj volumes of the Journal of Strength & Conditioning Research for 2013th year. Link
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