Reliability of Measures Obtained During Single and Repeated Countermovement Jumps
Reliability of Measures Obtained During Single and Repeated Countermovement Jumps
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DOI：
10.1123/ijspp.3.2.131
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发表时间：
2008-06-01
影响因子：
3.3
通讯作者：
Doyle, Tim L. A.
中科院分区：
文献类型：
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作者：
Cormack, Stuart J.;Newton, Robert U.;Doyle, Tim L. A.
目的：在优秀运动员群体中建立在单次和重复反动作跳跃(CMJ)过程中所获得的各种测量的可靠性。方法：进行了两项研究，每项研究涉及15名优秀的澳大利亚规则足球(ARF)运动员，受试者进行了两天的AM和PM试验，每隔一周进行一次单独的(CMJ1)或5次重复的CMJ(CMJ5)。每一次试验都是在便携式测力板上进行的。计算每种跳跃类型的众多变量的日内、日间和总体典型误差(TE)和变异系数(CV%)。结果：CMJ1和CMJ5的部分变量具有较高的日内、日间和总体信度。在CMJ1条件下，平均作用力(CV 1.08%)是最可靠的变量。在CMJ5中，飞行时间和相对平均作用力的重复性最高，变异系数分别为1.88%和1.57%。CMJ1平均力是唯一具有总体TE<；最小值得变化(SWC)的变量。结论：在CMJ1和CMJ5训练过程中获得的选定变量可以用来评估急性和慢性训练和比赛的影响。来自CMJ5的变量可能会与CMJ1对应的变量做出不同的反应，并应提供对反应和适应的不同机制的见解。
Purpose: To establish the reliability of various measures obtained during single and repeated countermovement jump (CMJ) performance in an elite athlete population. Methods: Two studies, each involving 15 elite Australian Rules Football (ARF) players were conducted where subjects performed two days, separated by one week, of AM and PM trials of either a single (CMJ1) or 5 repeated CMJ (CMJ5). Each trial was conducted on a portable force-plate. The intraday, interday, and overall typical error (TE) and coefficient of variation (CV%) were calculated for numerous variables in each jump type. Results: A number of CMJ1 and CMJ5 variables displayed high intraday, interday, and overall reliability. In the CMJ1 condition, mean force (CV 1.08%) was the most reliable variable. In the CMJ5, flight time and relative mean force displayed the highest repeatability with CV of 1.88% and 1.57% respectively. CMJ1 Mean force was the only variable with an overall TE < smallest worthwhile change (SWC). Conclusion: Selected variables obtained during CMJ1 and CMJ5 performance can be used to assess the impact of both acute and chronic training and competition. Variables derived from the CMJ5 may respond differently than their CMJ1 counterparts and should provide insights into differential mechanisms of response and adaptation.