Department of Wellness Programs, Florida Southern College, Lakeland, Florida, USA.
J Strength Cond Res. 2010 Feb;24(2):375-81. doi: 10.1519/JSC.0b013e3181c06e0b.
The primary purpose of this investigation was to compare single leg vertical jump performance and several performance characteristics derived from vertical ground reaction forces (vGRF) between the dominant (DOM) and nondominant (NDOM) legs. Secondary purposes included determining the relationship between the kinetic and temporal characteristics and single leg vertical jump performance and establishing the intrasession and intersession reliability of the characteristics considered. After a standardized warm-up, 20 physically active young adults (10 men, 10 women) performed three single leg DOM and three single leg NDOM vertical jumps in a random order during two sessions separated by three days. vGRF collected during each trial were used to calculate jump height, peak vertical power, peak vGRF, vGRF impulse, ratio between negative to positive vGRF impulse, time between maximum peak power to takeoff and countermovement depth. There were no significant differences between DOM and NDOM for jump height (p = .145) as well as the six characteristics considered (p > .05). There was a strong, direct relationship between jump height and peak vertical power for both DOM (r = .915, p < .001) and NDOM (r = .944, p < .001). With the exception of vGRF negative/positive impulse ratio, all dependent variables demonstrated moderate to high intrasession and intersession reliability. These results support using a single leg vertical jump protocol for conducting bilateral lower extremity functional assessments. With the exception of impulse ratio, the reliability results support using the protocol for serial assessments. In conclusion, healthy individuals can be expected to exhibit near equal single leg vertical jumping performance bilaterally, providing practitioners with a basis to interpret performance.
本研究的主要目的是比较主导（DOM）和非主导（NDOM）腿的单腿垂直跳跃表现和几个源自垂直地面反作用力（vGRF）的表现特征。次要目的包括确定动力学和时间特征与单腿垂直跳跃表现之间的关系，并确定所考虑特征的组内和组间可靠性。在标准化热身之后，20 名身体活跃的年轻人（10 名男性，10 名女性）在两次测试中以随机顺序进行三次单腿 DOM 和三次单腿 NDOM 垂直跳跃，两次测试之间间隔三天。在每次试验中收集的 vGRF 用于计算跳跃高度、峰值垂直功率、峰值 vGRF、vGRF 冲量、负向 vGRF 冲量与正向 vGRF 冲量的比值、从最大峰值功率到起飞和反向运动深度的时间。跳跃高度（p =.145）和考虑的六个特征（p >.05）在 DOM 和 NDOM 之间没有显著差异。对于 DOM（r =.915，p <.001）和 NDOM（r =.944，p <.001），跳跃高度与峰值垂直功率之间存在强烈的直接关系。除了 vGRF 负向/正向冲量比外，所有依赖变量都表现出中等到高度的组内和组间可靠性。这些结果支持使用单腿垂直跳跃协议进行双侧下肢功能评估。除了冲量比外，可靠性结果支持使用协议进行连续评估。总之，健康个体可以预期双侧单腿垂直跳跃表现几乎相等，为从业者提供了解释表现的基础。
