{"id":324691,"date":"2018-08-09T04:00:08","date_gmt":"2018-08-09T11:00:08","guid":{"rendered":"https:\/\/www.swimmingworldmagazine.com\/news\/?p=324691"},"modified":"2018-08-08T18:44:03","modified_gmt":"2018-08-09T01:44:03","slug":"swimming-technique-concepts-development-of-an-optimal-model-for-body-rotation","status":"publish","type":"post","link":"https:\/\/www.swimmingworldmagazine.com\/news\/swimming-technique-concepts-development-of-an-optimal-model-for-body-rotation\/","title":{"rendered":"Swimming Technique Concepts: Development of an Optimal Model for Body Rotation"},"content":{"rendered":"

Swimming Technique Concepts: Development of an Optimal Model for Body Rotation<\/h2>\n

Last month\u2019s article listed key concepts to address in developing an\u00a0optimal model for technique. Examples were presented about how two concepts\u2014body size (i.e., the cross-sectional area of the body that is perpendicular to the horizontal direction of body motion) and shape (i.e., the active drag coefficient)\u2014can minimize resistance. Also included was information about the trade-off between maximizing propulsion and minimizing resistance.<\/p>\n

Body rotation is a concept directly related to both the size and shape of the body. Rotation refers to angular motion about an axis through the center of the body.<\/p>\n

There are three reference axes for evaluating body movement. All three axes pass through the center of mass of the body, which is located in the middle of the body at approximately the level of the navel.<\/p>\n