Bioresources and Environmental Sciences, Ishikawa Prefectural University, Nonoichimachi, Japan.
J Strength Cond Res. 2012 Jul;26(7):1786-91. doi: 10.1519/JSC.0b013e318236d126.
This study aimed to clarify the relationship between upper-body strength and bat swing speed in high-school baseball players and to examine the physical characteristics of home run hitters (sluggers). The subjects were 30 male high-school baseball players with national tournament experience at the Koshien Stadium. Bat swing speed exerted by full effort was measured with a microwave-type speed-measuring instrument. One-repetition maximum (1RM) of a bench press (BP), BP power (bench power) using a light load (30 kg), and isokinetic chest press (0.4, 0.8, 1.2 m·s(-1)) were measured as upper-body strength. The relationships between bat swing speed and upper-body strength values were examined. Additionally, the t-test was used to reveal the mean differences between 14 home run hitters (group A) and 16 mediocre hitters (group B) for each measurement value. The bat swing speed showed significant and middle correlations with the 1RM BP (r = 0.59), bench power (0.41), and isokinetic chest press (0.48-0.55). Group A had significantly higher values in bench power and isokinetic chest press (high-speed) per kilogram of body weight than did group B. The swing speed showed significant correlations (r = 0.62) with the 1RM BP in group B but not in group A. In conclusion, to improve the hitting power of high-school baseball players, it may also be important to develop bench power with light loads in addition to 1RM BP.
本研究旨在阐明高校棒球选手中上半身力量与挥棒速度之间的关系，并探讨本垒打选手（强击手）的身体特征。研究对象为 30 名有过甲子园参赛经验的男性高校棒球选手。采用微波测速仪测量全力挥棒时的挥棒速度。使用轻负荷（30 公斤）测量 1 次最大重复次数（1RM）卧推（BP）、BP 功率（卧推功率），以及等速胸推（0.4、0.8、1.2 m·s(-1))作为上半身力量。检验了挥棒速度与上半身力量值之间的关系。此外，使用 t 检验揭示了每个测量值在 14 名本垒打选手（A 组）和 16 名普通选手（B 组）之间的均值差异。挥棒速度与 1RM BP（r = 0.59）、卧推功率（0.41）和等速胸推（0.48-0.55）均呈显著中度相关。A 组的卧推功率和等速胸推（高速）每公斤体重均显著高于 B 组。B 组的挥棒速度与 1RM BP 呈显著相关（r = 0.62），而 A 组则没有。结论：要提高高校棒球选手的击球力量，除了 1RM BP 外，用轻负荷发展卧推功率可能也很重要。
