18th（2021）
| Purpose and significance of kata of Seiryoku-Zenyo-Kokumin-Taiiku Shusaku KIRYU (Kodokan Judo Institute) |
1-12 |
| The Term “Judo” in Kito-ryu: Historical Background and Relationship with Jikishin-ryu Tetsuya NAKAJIMA (Ibaraki University) |
13-30 |
| The relationships between toe strength and balance ability, floating toes, and judo competitiveness in university female judo athletes Kurumi SUZUKI (Tokyo Gakugei University) Takamitsu MATSUI (Teikyo University of Science) Hiroshi KUBOTA (Tokyo Gakugei University) |
31-38 |
| Sex-based difference in lean body mass development in elementary-school-aged judo players based on bone age assessment Eiji FUJITA (National Institute of Fitness and Sports in KANOYA) Hiroyuki NOGUCHI (Fukuoka Judo Association) Moritoshi MATSUZAKI (Shimonoseki City University) Hatsuyuki HAMADA (National Institute of Fitness and Sports in KANOYA) Isamu NAKAMURA (National Institute of Fitness and Sports in KANOYA) Yuji OZAWA (National Institute of Fitness and Sports in KANOYA) Haruhiko YASUKOUCHI (Kyushu Sangyo University) |
39-44 |
| Case of Seoi-Nage Coaching for Elbow Joint Pain in Judo Athletes Yukinori YAMAMOTO (University of Tsukuba Doctoral Program in Coaching Science) Hiroaki HIRAOKA (University of Tsukuba) Takeshi SASAKI (ALSOK Sohgo Security Services CO., LTD) |
45-54 |
| Differences of onset and duration of judo specialization between male and female Olympic judo athletes Noriko NARAZAKI (Faculty of Education, University of Teacher Education Fukuoka) Ryoko WATANABE (Faculty of Human Health Science, Kanazawa Gakuin University) |
55-65 |
| Judo play teaching materials for promoting physical fitness in lower elementary grades: Ensuring continuity in sports techniques based on developmental stage Yukitomo YOGI (Kagoshima University) Susumu TAKAHASHI (Daito Bunka University) Masahiko KIMURA (YOKOHAMA National University) Yoshiharu MAKISHI (KODOKAN) Shogo TOBO (Kagoshima University Faculty of Education Elementary School) |
67-74 |
| Practice of an ukemi drill game with young judo athletes:Effectiveness of video shown on a tablet Yuji OZAWA (National Institute of Fitness and Sport in KANOYA) Eriko MISHIMA (Dai-san Junior Hight School, Arao Kumamoto) Kimiyasu KIYOTA (National Institute of Technology, Kumamoto College) Ryuya MITSUDA (University of Tsukuba Graduate School) Isamu NAKAMURA (National Institute of Fitness and Sport in KANOYA) Hatsuyuki HAMADA (National Institute of Fitness and Sport in KANOYA) Goshi ISHIBASHI (Kumamoto Gakuen University) Yasutaka OHKAWA (Tokai University) Michito SAKAMOTO (Fukuoka University) Hajime NAKAHARA (Fukuoka University) |
75-84 |
| The Current Situation of Corporal Punishment and Violence in Judo Instruction Scenes in Japan: Comparison between Japanese and English university students Yuya KAWATO (Sendai University) Mitsutoshi NANJO (Sendai University) Takashi IWASAKI (Ryutsu Keizai University) Yukinori YAMAMOTO (University of Tsukuba Doctoral Program in Coaching Science) Kosuke TANAKA (San Jose State University) |
85-95 |
| Study on the Basic Principles of Judo Instructions in Dutch Judo Leaders-For Instructions of Children Susumu TAKAHASHI (Daito Bunka University) Seiki NOSE (Saitama Gakuen University) Masahiko KIMURA (Yokohama National University) Isamu NAKAMURA (National Institute of Fitness and Sports in KANOYA) Katsuhiro KOYAMA (Yamanashi University) Mikihiro NUKAI (Kodokan) Kenichi SHOSHIDA (Kodokan) Hideya MORI (Annaka General Academic High School, Gunma) Yukitomo YOGI (Kagoshima University) Kenji TAKAHASHI (Nukui Junior High School, Nerima Tokyo) Takanori ISHII (Ryotokuji University) Hiroyuki TANAKA (All Japan Judo Federation) Toshihiro TAKEZAWA (Jyuntendo University) Kota SAMESHIMA (Senior High School at Otsuka, University of Tsukuba) Joop PAUEL (Nova College CIOS Haarlem) |
97-107 |
| The Mental Characteristics of Judo Olympic Representatives from the Aspects of UK Method: Analysis by Record Naoya UCHIMURA (Osaka Sangyo University) Takayuki YOKOYAMA (Setsunan University) Masatoshi SAITO (Kobe Shinwa Woman’s University) Yoshihisa ISHIKAWA (Osaka Kyoiku University) Chikako YASUI (Ritsumeikan University) Akiko HIGASHIYAMA (Osaka University of Commerce) |
109-118 |