Abstract
The decrease in fluid resistance is one of the important keys for the purpose of shortening of the sports time record. By wearing of a low resistance swimsuit, it still reminds us that there were a lot of large time record shortening in swimming races of Beijing Olympic. The development of low resistance cloth as the application to sports is very important. This study is intended to suggest the best piece of cloth in specific speed area of sports. The fluid resistance concerning the change of cloth materials, surface roughness, surface processing method, seam position and the difference in sewing were investigated by one of the authors. In this time, Influence of slack of the clothes was also investigated. In addition, we performed the aerodynamics experiment of the sports wears which considered the seam position of the cloth as a result of cylinder model and obtained an interesting result. The obtained results showed that there were no influence on the seam position and cloth materials.
