The effect of exercises with an innovative device for the undulating trunk movement in developing technical performance and achieving 50 m butterfly swimming

Abstract

Butterfly stroke is considered one of the types of swimming and the most difficult to perform and ranks second in the Olympic ranking in terms of speed after freestyle stroke. Therefore, countries have been interested in it and its development to obtain the largest possible number of medals in championships by developing training curricula using modern means and devices in it to achieve the best results in the future. Therefore, the researcher decided to use an innovative device that provides (the kinetic mechanism of the trunk), in which the trunk is considered the main role in performing the undulating movement and transferring movement from the head to the legs and doing exercises with the device outside the water to develop that movement and thus its impact on achievement in butterfly swimming. The research problem was that effective training methods were not found to facilitate the training process for players, and even if they were found, they did not include the use of ground devices and appropriate auxiliary tools to build the training requirements. As a result, and in an attempt to address this deficiency, the researcher designed a device with the assistance of specialists that achieves this goal, as it is based on rules that actually simulate the motor performance of butterfly swimming inside the water, but this simulation takes place outside the water, especially the undulating movement. The most important goals were to design a training device for the undulating movement of the trunk in butterfly swimming. Preparing exercises outside the water using the innovative training device. The research method was the experimental method using the two equal groups method to suit the nature of the research problem. The research sample was junior swimmers (specialized swimming school) in Baghdad who are good at freestyle swimming (but not good at butterfly swimming). The intentional selection was made and their number was 20. They were divided into experimental and control groups. The results indicated the superiority of the experimental group that used the exercises and the device over the control group.