Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi.
Department of Kinesiology, Missouri State University, Springfield, Missouri.
J Strength Cond Res. 2019 May;33(5):1347-1353. doi: 10.1519/JSC.0000000000002020.
Williams, CC, Gdovin, JR, Wilson, SJ, Cazas-Moreno, VL, Eason, JD, Hoke, EL, Allen, CR, Wade, C, and Garner, JC. The effects of various weighted implements on baseball swing kinematics in collegiate baseball players. J Strength Cond Res 33(5): 1347-1353, 2019-The purpose of this study was to investigate the effects of different warm-up (WU) devices on bat swing parameters including maximal resultant velocity (MRV), resultant velocity at ball contact (RVBC), time difference between MRV and RVBC, bat angle at MRV, bat angle at RVBC, and perceptual differences of each WU implement used by National Collegiate Athletic Association Division-I baseball players. Fifteen varsity baseball players completed 1 experimental session during fall training. Retroreflective markers were placed on the bat and tee to measure basic bat kinematics during the swing. Participants completed a general calisthenics WU before being counter-balanced into 1 of 4 WU conditions: standard bat (SB) (33 in/30 oz), fungo (10.6 oz), weighted gloves with SB (weighted gloves) (55.6 oz) and donut with SB (donut) (55.6 oz). Each participant was asked to perform their normal on-deck routine over a 2-minute period, finishing with 5 practice swings with the designated condition. After completion of the WU, a 1-minute rest period (simulating normal game conditions) was given to allow each participant to get set to perform 5 maximal swings with a SB. Five, 1 × 4 (group × condition) repeated measures analysis of variance examined the aforementioned variables. There were no significant differences in MRV, RVBC, time difference between MRV and RVBC, and bat angle at MRV and RVBC between all WU conditions. If presented with the current options, athletes should choose the WU implement with which they are most comfortable using before an at-bat situation.
威廉姆斯、Gdovin、威尔逊、卡萨斯-莫雷诺、伊森、霍克、艾伦、韦德和加纳。不同加重器具对大学生棒球运动员棒球挥杆运动学的影响。J 强能力研究 33(5):1347-1353,2019-本研究旨在探讨不同热身(WU)装置对击球参数的影响，包括最大合成速度(MRV)、击球时的合成速度(RVBC)、MRV 与 RVBC 之间的时间差、MRV 时的球棒角度、RVBC 时的球棒角度，以及美国大学生体育协会一级棒球运动员使用的每种 WU 器具的感知差异。15 名大学棒球队员在秋季训练期间完成了 1 次实验。在挥杆过程中，在球棒和球座上放置了反射标记以测量基本球棒运动学。参与者在被平衡到 4 种 WU 条件之一之前完成了一般的体操热身：标准球棒(SB)(33 英寸/30 盎司)、fungo(10.6 盎司)、带有 SB 的加重手套(加重手套)(55.6 盎司)和带有 SB 的甜甜圈(甜甜圈)(55.6 盎司)。每个参与者都被要求在 2 分钟内完成正常的站位练习，然后用指定的条件完成 5 次练习挥杆。完成 WU 后，给予 1 分钟的休息时间(模拟正常比赛条件)，让每个参与者准备好使用 SB 进行 5 次最大挥杆。采用 5×4(组×条件)重复测量方差分析对上述变量进行了检验。在所有 WU 条件下，MRV、RVBC、MRV 和 RVBC 之间的时间差以及 MRV 时的球棒角度和 RVBC 时的球棒角度均无显著差异。如果提供了当前的选择，运动员应该在击球前选择他们最舒适使用的 WU 器具。
