@article{oai:kanagawa-u.repo.nii.ac.jp:00014568,
 author = {森本, 美行 and 波多野, 圭吾 and 大森, 酉三郎 and 大竹, 弘和 and 朴, 明姫},
 issue = {63},
 journal = {人文学研究所報, Bulletin of the Institute for Humanities Resarch},
 month = {Mar},
 note = {The object of this research is to clarify tendencies of promotion and demotion for professional football clubs of the J league in Japan, which is operated by Open League, by Notational game performance analysis. Those analyses would indicate an efficient investment policy for each club, not only professional football clubs, but also for clubs who want to join J league. The term of analysis is 4 years, 2015-2018. To analyze characteristics of tendency of promotion and demotion, two indicators, football style and efficiency for goals, were used. With Product Portfolio Management analysis, each analyzed team was categorized and displayed in a table of 4 quadrant areas, the X axis represents possession rate, and the Y axis represents efficiency of goals. This research revealed that demoted clubs tend to position in the 4th quadrant area, “Dangerous Zone”, less than 50％ of the possession rate and less than the average of the efficiency rate and, promoted clubs tend to position in the 1st quadrant area, “Window for Success”, more than 50％ of the possession rate, and more than the average of the efficiency of goals. This research concluded that a higher possession rate is one of the essential indicators, and that the efficiency of goals was used tactically depending on the clubʼs strategy to stay, and promote to J1., Departmental Bulletin Paper},
 pages = {1--17},
 title = {JリーグにおけるJ1・J2間の昇降格に関する分析},
 year = {2020}
}