全美大学体育协会美式橄榄球 I 组运动员反弹反向运动跳跃的可靠性和有效性》（The Reliability and Validity of the Rebound Countermovement Jump in National Collegiate Athletic Association Division I American Football Players）。
Scott W Talpey, Micah Drake, Liam Haintz, Anthony Belanger, Mathew W O'Grady, Warren B Young, Peter D Mundy, Lachlan James, Tim J Gabbett, Elizabeth C Gardner
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Because the first phase of the R-CMJ mimics that of the CMJ, it is hypothesized that variables obtained in phase I of the R-CMJ will be like those of a CMJ. Similarly, because the second phase of a R-CMJ mimics a DJ, it is believed that the variables obtained from phase II will be like those from a DJ. Collegiate male American football players (N = 46) aged 18-24 years completed CMJs and R-CMJs on a portable force plate. Tests were completed on 3 separate days to determine the repeatability of select variables and to establish their validity. In addition, a subgroup (N = 20) of players from the cohort completed DJs from both 30 cm (DJ30) and 45 cm (DJ45) to determine the concurrent validity of the variables obtained from the second phase of the R-CMJ. Most variables obtained from the CMJ and R-CMJ phase I were found to be reliable, except for time-to-take-off. The variables from the DJ30, DJ45, and R-CMJ phase II displayed moderate to good reliability; however, all coefficient of variations were >10%. Jump height achieved in the CMJ was significantly greater than that achieved in phase I of the R-CMJ. The reactive strength index was significantly different in the R-CMJ compared with the DJ from both 30 and 45 cm heights. 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引用次数: 0
摘要
摘要： Talpey, SW, Drake, M, Haintz, L, Belanger, A, O'Grady, MW, Young, WB, Mundy, PD, James L, Gabbett, TJ, Gardner, EC.全美大学体育协会美式橄榄球 I 组球员反弹反向运动跳跃的可靠性和有效性。J Strength Cond Res XX(X)：000-000，2024-本研究的目的是调查反弹屈膝跳（R-CMJ）的可靠性和有效性，作为 CMJ 和下蹲跳（DJ）之外的另一种腿部肌肉功能测试。由于 R-CMJ 的第一阶段模仿 CMJ，因此假设在 R-CMJ 第一阶段获得的变量将与 CMJ 相似。同样，由于 R-CMJ 的第二阶段模仿 DJ，因此相信第二阶段所获得的变量将与 DJ 相似。年龄在 18-24 岁之间的美式橄榄球大学生男运动员（46 人）在便携式测力板上完成了 CMJ 和 R-CMJ。测试分别在 3 天内完成，以确定所选变量的可重复性并确定其有效性。此外，一组（N = 20）运动员完成了 30 厘米（DJ30）和 45 厘米（DJ45）的 DJ 测试，以确定从 R-CMJ 第二阶段获得的变量的并发有效性。从 CMJ 和 R-CMJ 第一阶段获得的大多数变量都是可靠的，但起飞时间除外。DJ30、DJ45和R-CMJ第二阶段的变量显示出中等至良好的可靠性；然而，所有变量的变异系数均大于10%。CMJ的起跳高度明显高于R-CMJ第一阶段的起跳高度。与 DJ 相比，R-CMJ 在 30 厘米和 45 厘米高度上的反应强度指数有明显差异。尽管R-CMJ因其简便和省时的特点可能会吸引教练员使用，但本研究的结果突出表明，它可能无法有效反映运动员的反应力量。
The Reliability and Validity of the Rebound Countermovement Jump in National Collegiate Athletic Association Division I American Football Players.
Abstract: Talpey, SW, Drake, M, Haintz, L, Belanger, A, O'Grady, MW, Young, WB, Mundy, PD, James L, Gabbett, TJ, Gardner, EC. The reliability and validity of the rebound countermovement jump in National Collegiate Athletic Association Division I American Football Players. J Strength Cond Res XX(X): 000-000, 2024-The purpose of this study was to investigate the reliability and validity of the rebound countermovement jump (R-CMJ), as an alternate test of leg muscle function to the CMJ and drop jumps (DJs). Because the first phase of the R-CMJ mimics that of the CMJ, it is hypothesized that variables obtained in phase I of the R-CMJ will be like those of a CMJ. Similarly, because the second phase of a R-CMJ mimics a DJ, it is believed that the variables obtained from phase II will be like those from a DJ. Collegiate male American football players (N = 46) aged 18-24 years completed CMJs and R-CMJs on a portable force plate. Tests were completed on 3 separate days to determine the repeatability of select variables and to establish their validity. In addition, a subgroup (N = 20) of players from the cohort completed DJs from both 30 cm (DJ30) and 45 cm (DJ45) to determine the concurrent validity of the variables obtained from the second phase of the R-CMJ. Most variables obtained from the CMJ and R-CMJ phase I were found to be reliable, except for time-to-take-off. The variables from the DJ30, DJ45, and R-CMJ phase II displayed moderate to good reliability; however, all coefficient of variations were >10%. Jump height achieved in the CMJ was significantly greater than that achieved in phase I of the R-CMJ. The reactive strength index was significantly different in the R-CMJ compared with the DJ from both 30 and 45 cm heights. Although the R-CMJ may be inviting for coaches to use owing to its ease and time efficiency, the results of this study highlight that it may not provide a valid representation of an athlete's reactive strength.
期刊介绍：
The editorial mission of The Journal of Strength and Conditioning Research (JSCR) is to advance the knowledge about strength and conditioning through research. A unique aspect of this journal is that it includes recommendations for the practical use of research findings. While the journal name identifies strength and conditioning as separate entities, strength is considered a part of conditioning. This journal wishes to promote the publication of peer-reviewed manuscripts which add to our understanding of conditioning and sport through applied exercise science.
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