Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TSUSHIMA Seizo,Study on the Back-Strength from viewpoint of Physical Fitness. : Rep. 1: On the new Back-Strength Dynamometer without using Grip Strength.,"Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences)",04846710,"Japan Society of Physical Education, Health and Sport Sciences",1960,4,3,72-78,https://cir.nii.ac.jp/crid/1390282679080784768,https://doi.org/10.5432/jjpehss.kj00003393286