INTRODUCTION: The performance structure model (PSM) is one of the better tools when considering the structure of sport. The model aims to provide a comprehensive framework for evaluating and supporting athletes, ensuring they receive the necessary training and resources to excel in competitive environments. We therefore built a PSM for Snowboard Slopestyle Big Air (SSBA) before providing scientific support to the Japanese National SSBA Team. METHODS: It is important for PSM that the upper elements be fully explained by the lower elements and that they be expressed in physical quantities whenever possible [1]. We therefore determined the higher-level elements based on the SSBA competition rules; since SSBA is a scoring competition, the highest-level element is Scale. Next, each element listed in the competition rules was logically decomposed until a measurable physical quantity was obtained. When building the model, scientists not only examined the model logically, but also sought input from coaches and athletes to ensure that there were no omissions in the elements. RESULTS: Figure 1 shows the PSM for the SSBA we constructed (Fig.1). The elements in bold are those listed in the rulebook. The elements at the bottom are those that can be measured by sensors and fitness measurements. The model revealed the relationships among the elements. DISCUSSION/CONCLUSION: PSM allows athletes, coaches, and scientists who want to make changes in technique or fitness to begin training with an understanding of the expected benefits and risks before the training. It also allows us to mechanically understand what elements to change next if the training is not effective. For example, athletes often wish to gain or lose weight. In the PSM, however, "body weight" is located in four places, and the advantages and disadvantages of changing weight vary depending on the location. In conclusion, this PSM allows us to consider the advantages and disadvantages of interventions before coaches and scientists initiate.
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