The Effects That Fabric and Design Have on the Clothing Climate, Skin Friction, and Performance of Kendo-gi Clothing

Abstract

With the aim of conducting systematic research on the comfort and functionality of kendo-gi （clothing worn while practicing kendo），we ascertained current conditions concerning kendo-gi and identified pertinent problems. Through a fact-finding survey that asked members of a university kendo club about the kendo-gi they wear, we discovered that many members choose cotton, which is the material from which the clothing is traditionally made. We also discovered from the respondents that complaints about kendo-gi discomfort include wetness and friction. By conducting and comparing the results of physicality tests, wearing tests, and skin-friction tests for both the traditional material （indigo-dyed cotton） and a new material （perspiration-absorbent, quick-drying polyester），we discovered that the new material kept temperature inside the clothing lower during practice, produced lower rises in body and skin temperature following practice, and had smaller thermophysiological load on the wearer. On the other hand, friction-caused skin damage was considerable in the case of the traditional material. The results of a further study on kendo-gi sleeve length and movability tests suggest the need for study toward standardization of kendo-gi sizes and measurements. It is our hope that this research will contribute to better clothing environments in kendo.