水泳指導法覚書

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This paper aims to study the method of swimming coach for beginner. 1. About the coach of Breathing Technique, whether or not pre-expiration under water, forcible and explosive expiration through the Mouth in Air and not under water just before inspiration is rational breathing technique for swimming. Especially, for beginning swimmer not pre-expiration under water is better than expiration through the Nose or Mouth under water. 2. About the coach of Floating Technique. The Body density can be defined as: [numerical formula] DB=Body density MBA=Mass of Body in Air MBW=Mass of Body in Water DW=Water density RV=residual volume VCI=Volume of intestinal canal, if a person who has the ability to floating, his under water body weight is greater than minass 1.5kg. and in order for body to float horizontally, it is necessary for the center of buoyancy and the center of Gravity to be in the same point or vertically below one another.
1977-11-30