十種競技における競技パフォーマンス構造に基づくパフォーマンスタイプの判定

抄録

　The purposes of this study were as follows: 1) to clarify the competition performance structure of the decathlon; 2) to classify performance types based on competition performance structure; and 3) to propose a method for discrimination of performance types. The subjects were 2717 decathletes included in a decathlon data set (Unwin, 2015). The athletes’ total scores were distributed within the range of 6800-9026 points, and were considered to represent a high-level sample. In this study, the competition records of 10 events were used to estimate the competition performance structure and classify the performance types. Total points scores were used to determine the competition levels of each performance type. Parallel analysis and factor analysis (oblique solution) revealed a competition performance structure consisting of 4 factors, which were labeled “running speed”, “explosive arm strength or object projection”, “running endurance”, and “body projection”, respectively, and largely corresponded to those proposed by Linden (1977). Latent profile analysis was applied to the 4 factor scores, and this discriminated 6 performance types as follows:
　1. Track type: T type
　2. Speed and field dominant type: SFD type
　3. Thrower type: Th type
　4. Balance type: B type
　5. Field type: F type
　6. Speed and field type: SF type
　Canonical discriminant analysis of the performance types was conducted using the records of 10 events as independent variables to estimate the discriminant functions, which were saved to an RDS file for statistical analysis using R software. It was possible to discriminate individual decathlete performance types by applying the same discriminant function with the saved RDS file.