著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Kohei AKAIKE and Masaki FUMOTO and Sotoyuki USUI,The Possibility of Decreasing Baseball Hitting Accuracy Caused by Visual Restriction : Hitting a specific type of pitch with a baseball helmet with a brim and ear-guards,Advances in exercise and sports physiology,13403141,Tsukuba : Japan Society of Exercise and Sports Physiology,2021-03,26,4,43-48,https://cir.nii.ac.jp/crid/1520853834863265408,