The Effects of Skiing and Playing with Snow Experiences on Mentally Retarded Children and the University Students Who Support Them, Kentaro Tai, Takeru Shima, Keita Koyama, Hayato Nakao, Kenta Motonami, Tomonori Shimofure, Hironobu Shimoda, Akiko Okada, Keiko Kiyama, Feb. 2025, 第60巻, 75, 83, Research institution
A Consideration of Teaching Method for Ball Activity Aimed at Improving Throwing Skills and Positive Attitudes toward Physical Education class in Elementary Children, Keita Koyama, Kenta Motonami, Keiko Kiyama, Tadanobu Kawagishi, 2024, 第59巻, 67, 74, Research institution
A study on support for mentally retarded children through skiing and playing with snow experiences, 霜触智紀、木山慶子、中雄勇人、小山啓太、田井健太郎、島孟留、霜田浩信, Jan. 2023
Effectiveness of Ball Activity for Improving Grip Strength and Cognitive Function In Elderly: Training Through Ball Activity in Older Adults, Keita Koyama, Jan. 2023
HoloLens2 and Mixed Reality Assessment of Ocular Motility While Catching and Throwing Balls : Identifying Ocular Patterns in Advanced Skilled Children During Catching and Throwing Activity, Keita Koyama, Matthew Howe, Keiko Kiyama, Mar. 2022, 39号, 47, 55, Scientific journal
An investigation into the measurement properties of the King-Devick Eye Tracking system, M. Hecimovich, D. King, M. Murphy, K. Koyama, Feb. 2022, Journal of Concussion, Scientific journal
Social Skills Development through Motor Skill Training with Ball Activities in Children with Disability., Keita Koayam, Keiko Kiyama, Mar. 2021, 38号, 183, 188, Scientific journal
Improvements in Elementary-Aged Children’s Throwing Ability in Motor Learning: Development of throwing using an ellipse ball for 1st graders in short-term training, Keita Koyama, Tetsuro Yamanishi, Keiko Kiyama, Mar. 2020, 37号, 155, 162, Scientific journal
Motor Skills Training and Social Skills Development in Children with Autism Spectrum Disorder, Keita Koyama, Tetsuro Yamanishi, Judy Chandler, Mark Hecimovich, Dec. 2018, World Congress on Special needs Education Proceedings, Scientific journal
Effectiveness of Ball Activity for Motor Skills Development in Children with Disability, Keita Koyama, Tetsuro Yamanishi, Judy Chandler, Mark Hecimovich, Nov. 2018, International Congress on Special Education Proceedings, Scientific journal
大学野球選手にみられる足首骨格の特徴と競技能力の関係, Keita Koyama, Mar. 2011, 一巻, 一号, 15, 21, Scientific journal
立正大学生の生活状態に関する一考察, 山地啓司、山西哲郎、長谷川大、小山啓太, Mar. 2011, 一巻, 一号, 31, 50, Scientific journal
Leap to the Future 2, Joint work, Stage8, Gunma University Press, Feb. 2025, 179, 120-123, Textbook
Leap to the Future2, Contributor, Gunma University, Passage15, Gunma University Press, 21 Sep. 2022, 177, 154-159, Textbook
投げるが脳と体を育む0歳からのボール遊び運動, Single work, Aug. 2018
野球選手のthe肉体改造, Single work, Mar. 2014
現代社会のスポーツ総合学Ⅰ, Single work, Mar. 2012