Ken-ichi Kato, Shotaro Hashimoto, Ken-ichi Sekiguchi, Koji Hayashida, Yasuto Kobayashi. A cross-sectional study on the development of softball throwing motions in elementary school students. Kitakanto Journal of Physical Education, Health and Sport Sciences. 2023. 8. 3-11
Katoh Ken-ichi, Satoh Yoshie, Sugiura Aoi, Kobayashi Yasuto, Ae Michiyoshi. A kinematics study on characteristics of running motions in infants: comparison with infants in the 1980s. Japan Journal of Human Growth and Development Research. 2023. 2022. 94. 87-99
A developmental characteristics of dodge ball throwing motion for second and fourth-grade elementary school students. 2022. 7. 1. 11-20
A study on motor observation ability using avideo delay system for fourth- and sixth-grade elementary school students : Standing long jump as a motor task. 2022. 7. 1. 3-10