Otsuji, Tamiki; Abe, Masafumi; Kinoshita, Hiroshi (2002). "After-Effects of Using a Weighted Bat on Subsequent Swing Velocity and Batters' Perceptions of Swing Velocity and Heaviness". Perceptual and Motor Skills. 94 (1): 119–126. doi:10.2466/pms.2002.94.1.119. PMID11883550. S2CID25117394.
Otsuji, Tamiki; Abe, Masafumi; Kinoshita, Hiroshi (2002). "After-Effects of Using a Weighted Bat on Subsequent Swing Velocity and Batters' Perceptions of Swing Velocity and Heaviness". Perceptual and Motor Skills. 94 (1): 119–126. doi:10.2466/pms.2002.94.1.119. PMID11883550. S2CID25117394.
Otsuji, Tamiki; Abe, Masafumi; Kinoshita, Hiroshi (2002). "After-Effects of Using a Weighted Bat on Subsequent Swing Velocity and Batters' Perceptions of Swing Velocity and Heaviness". Perceptual and Motor Skills. 94 (1): 119–126. doi:10.2466/pms.2002.94.1.119. PMID11883550. S2CID25117394.