Lockie Robert G, Dawes J Jay, Callaghan Samuel J
Department of Kinesiology, California State University, Fullerton, Fullerton, CA, USA.
School of Kinesiology, Applied Health and Recreation, Oklahoma State University, Stillwater, OK, USA.
Biol Sport. 2020 Dec;37(4):423-428. doi: 10.5114/biolsport.2020.96944. Epub 2020 Jul 10.
Volleyball players need to sprint and change direction during a match. Lower-body power, often measured by jump tests, could contribute to faster movements. How different jumps relate to linear and change-of-direction (COD) speed has not been analyzed in Division I (DI) collegiate women's volleyball players. Fifteen female volleyball players completed the vertical jump (VJ), two-step approach jump (AppJ), and standing broad jump (SBJ). Peak power and power-to-body mass ratio (P:BM) were derived from VJ and AppJ height; relative SBJ was derived from SBJ distance. Linear speed was measured via a 20-m sprint (0-10 and 0-20 m intervals); COD speed was measured using the pro-agility shuttle. Pearson's correlations ( < 0.05) calculated relationships between the power variables, and speed tests. There were no significant relationships between the power variables and the 0-10 m sprint interval. Greater VJ height ( = -0.534) and P:BM ( = -0.557) related to a faster 0-20 m sprint interval. This be due to a greater emphasis on the stretch-shortening cycle to generate speed over 20 m. However, although a 20-m sprint may provide a measure of general athleticism, the distance may not be specific to volleyball. This was also indicated as the AppJ did not relate to any of the speed tests. Nonetheless, VJ height and P:BM, and SBJ distance and relative SBJ, all negatively correlated with the proagility shuttle ( = -0.548 to -0.729). DI women's collegiate volleyball players could develop absolute and relative power in the vertical and horizontal planes to enhance COD speed.
排球运动员在比赛中需要冲刺和改变方向。下肢力量通常通过跳跃测试来衡量,它可能有助于更快地移动。在一级(DI)大学女子排球运动员中,尚未分析不同跳跃与直线和变向(COD)速度之间的关系。15名女排运动员完成了垂直跳跃(VJ)、两步助跑跳跃(AppJ)和立定跳远(SBJ)。峰值功率和功率与体重比(P:BM)由VJ和AppJ的高度得出;相对SBJ由SBJ的距离得出。直线速度通过20米冲刺(0-10米和0-20米区间)来测量;COD速度使用敏捷性穿梭测试来测量。通过皮尔逊相关性(<0.05)计算功率变量与速度测试之间的关系。功率变量与0-10米冲刺区间之间没有显著关系。更大的VJ高度(=-0.534)和P:BM(=-0.557)与更快的0-20米冲刺区间相关。这可能是由于在超过20米的距离上,更加强调通过拉长缩短周期来产生速度。然而,尽管20米冲刺可能提供了一种衡量一般运动能力的方法,但该距离可能并不特定于排球运动。这一点在AppJ与任何速度测试均无关联中也得到了体现。尽管如此,VJ高度和P:BM,以及SBJ距离和相对SBJ,均与敏捷性穿梭测试呈负相关(=-0.548至-0.729)。一级大学女子排球运动员可以在垂直和水平平面上发展绝对和相对力量,以提高COD速度。