Contribution of physical fitness and throw form to ball-throw distance and the sex difference in preschool children
幼児期におけるボール遠投に対する体力及び投動作の貢献度とその性差

Shinichi Demura
1993 Taiikugaku kenkyu (Japan Journal of Physical Education Health and Sport Sciences)  
The purposes of this study were to determine the deyelopmental relationships among threw distanoes of 6 kind balls of various weight, size and solidity, throw form of tennis ball (TB), and accuracy
doi:10.5432/jjpehss.kj00003391898 fatcat:cdxd44iijnd4pg756d6676hxge