Loturco Irineu, Pereira Lucas A, Kobal Ronaldo, Kitamura Katia, Cal Abad César C, Marques Guilherme, Guerriero Aristide, Moraes José E, Nakamura Fábio Y
1NAR-Nucleus of High Performance in Sport, São Paulo, Brazil; 2CBRu-Brazilian Rugby Confederation, São Paulo, Brazil; and 3State University of Londrina, Londrina, Brazil.
J Strength Cond Res. 2017 Sep;31(9):2579-2585. doi: 10.1519/JSC.0000000000002086.
Loturco, I, Pereira, LA, Kobal, R, Kitamura, K, Cal Abad, CC, Marques, G, Guerriero, A, Moraes, JE, and Nakamura, FY. Validity and usability of a new system for measuring and monitoring variations in vertical jump performance. J Strength Cond Res 31(9): 2579-2585, 2017-Vertical jump (VJ) height is one of the most sensitive measures to quantify training-related fatigue and athletic performance in elite athletes. Currently, however, there is no equipment designed to graphically deliver the daily performance changes in VJ compared with the smallest worthwhile change (SWC), which is considered essential in "progressive statistics" to judge meaningful performance fluctuations. The aims of the study were to analyze the criterion validity of a new contact mat (i.e., Elite Jump), alongside testing its usability to detect meaningful changes in VJ of elite team sport athletes. A total of 31 athletes participated in the criterion validity part of the study, whereas 17 rugby players participated in the VJ sensitivity part. When compared with the force plate, the contact mat produced squat jump (SJ) and countermovement jump (CMJ) values with very high intraclass correlation coefficients (0.998 and 0.997, respectively) and very low biases (-0.11 and -0.08 cm, respectively), as assessed by the Bland-Altman plot. In addition, during a training microcycle, rugby players presented identical meaningful changes in performance in both SJ and CMJ when comparing the Elite Jump and Hopkins' spreadsheet outputs. Therefore, the contact mat is valid and the proprietary software can properly execute the SWC calculations, providing coaches and researchers with accurate information concerning variations in the physical performance of elite athletes.
洛图尔科，I；佩雷拉，LA；科巴尔，R；北村，K；卡尔·阿瓦德，CC；马克斯，G；圭里耶罗，A；莫赖斯，JE；中村，FY。一种用于测量和监测垂直跳跃成绩变化的新系统的有效性和实用性。《力量与体能研究杂志》31(9): 2579 - 2585，2017年——垂直跳跃（VJ）高度是量化精英运动员训练相关疲劳和运动表现最敏感的指标之一。然而，目前还没有设备能够以图形方式呈现VJ的每日成绩变化，并与最小有意义变化（SWC）进行比较，而SWC在“渐进统计”中被认为是判断有意义的成绩波动所必需的。本研究的目的是分析一种新型接触垫（即精英跳跃垫）的标准效度，并测试其检测精英团队运动运动员VJ中有意义变化的可用性。共有31名运动员参与了研究的标准效度部分，而17名橄榄球运动员参与了VJ敏感性部分。通过布兰德 - 奥特曼图评估，与测力台相比，接触垫产生的深蹲跳（SJ）和反向移动跳（CMJ）值具有非常高的组内相关系数（分别为0.998和0.997）以及非常低的偏差（分别为 - 0.11和 - 0.08厘米）。此外，在一个训练微周期中，当比较精英跳跃垫和霍普金斯电子表格输出时，橄榄球运动员在SJ和CMJ中的表现呈现出相同的有意义变化。因此，接触垫是有效的，其专有软件能够正确执行SWC计算，为教练和研究人员提供有关精英运动员身体表现变化的准确信息。
