Moir Gavin, Shastri Purvi, Connaboy Chris
Department of Exercise Science, East Stroudsburg University of Pennsylvania, East Stroudsburg, Pennsylvania, USA.
J Strength Cond Res. 2008 Nov;22(6):1779-84. doi: 10.1519/JSC.0b013e318185f0df.
The purpose of the present study was to investigate the intersession reliability of vertical jump height in women and men recorded from a contact mat. Thirty-five women and 35 men performed four testing sessions across a 4-week period, with each session separated by 1 week. Within each testing session, subjects completed three countermovement vertical jumps (CMJs) for maximum height. Reliability statistics were calculated using the highest jump (HIGH) and also from the mean of all three jumps (3 MEAN) during each session. Reliability was calculated as a change in the mean, coefficients of variation (CVs), and intraclass correlations coefficients (ICCs) between testing sessions. For women, jump heights were not substantially different between sessions for either the HIGH or 3 MEAN data. The CVs for women ranged from 4.4 to 6.6% for HIGH and 4.1 to 6.0% for 3 MEAN, with the corresponding ICCs ranging from 0.87 to 0.94 for HIGH and 0.90 to 0.95 for 3 MEAN. For men, jump heights were not substantially different between sessions for HIGH. However, jump heights during session 1 were substantially greater than those during session 2 when using the 3 MEAN data. CVs between sessions for HIGH ranged from 4.0 to 5.6%, and those for 3 MEAN ranged from 4.2 to 5.2%. The ICCs ranged from 0.87 to 0.93 for HIGH and from 0.89 to 0.93 for 3 MEAN. Given the maximal nature of vertical jump tests, it seems appropriate to use the highest jump from a number of trials for women and men when using a contact mat. Practitioners and researchers can use the data to identify the range in which the true value of an athlete's score lies and calculate sample sizes for studies assessing height during CMJs recorded from a contact mat.
本研究的目的是调查通过接触垫记录的女性和男性垂直跳高度在不同测试阶段之间的可靠性。35名女性和35名男性在4周内进行了四个测试阶段，每个阶段间隔1周。在每个测试阶段，受试者完成三次最大高度的反向运动垂直跳（CMJ）。使用每次测试阶段中的最高跳（HIGH）以及所有三次跳跃的平均值（3 MEAN）来计算可靠性统计数据。可靠性通过不同测试阶段之间的平均值变化、变异系数（CV）和组内相关系数（ICC）来计算。对于女性，无论是HIGH数据还是3 MEAN数据，不同测试阶段之间的跳高度没有显著差异。女性的HIGH数据CV范围为4.4%至6.6%，3 MEAN数据CV范围为4.1%至6.0%，相应的HIGH数据ICC范围为0.87至0.94，3 MEAN数据ICC范围为0.90至0.95。对于男性，HIGH数据在不同测试阶段之间的跳高度没有显著差异。然而，使用3 MEAN数据时，第1阶段的跳高度显著高于第2阶段。HIGH数据不同测试阶段之间的CV范围为4.0%至5.6%，3 MEAN数据CV范围为4.2%至5.2%。HIGH数据ICC范围为0.87至0.93，3 MEAN数据ICC范围为0.89至0.93。鉴于垂直跳测试的最大性质，当使用接触垫时，对女性和男性使用多次试验中的最高跳似乎是合适的。从业者和研究人员可以使用这些数据来确定运动员得分的真实值所在范围，并计算评估从接触垫记录的CMJ期间高度的研究的样本量。
