Bishop Chris, Read Paul, McCubbine Jermaine, Turner Anthony
London Sport Institute, School of Science and Technology, Middlesex University, London, United Kingdom.
Athlete Health and Performance Research Center, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; and.
J Strength Cond Res. 2021 Jan 1;35(1):56-63. doi: 10.1519/JSC.0000000000002544.
Bishop, C, Read, P, McCubbine, J, and Turner, A. Vertical and horizontal asymmetries are related to slower sprinting and jump performance in elite youth female soccer players. J Strength Cond Res 35(1): 56-63, 2021-Interlimb asymmetries have been shown to be greater during vertical jumping compared with horizontal jumping. Notable interlimb differences have also been established at an early age in male youth soccer players. Furthermore, given the multiplanar nature of soccer, establishing between-limb differences from multiple jump tests is warranted. At present, a paucity of data exists regarding asymmetries in youth female soccer players and their effects on physical performance. The aims of this study were to quantify interlimb asymmetries from unilateral jump tests and examine their effects on speed and jump performance. Nineteen elite youth female soccer players performed a single-leg countermovement jump (SLCMJ), single, triple, and crossover hops for distance, and a 20-m sprint test. Test reliability was good to excellent (intraclass correlation coefficient = 0.81-0.99) and variability acceptable (coefficient of variation = 1.74-5.42%). A 1-way analysis of variance highlighted larger asymmetries from the SLCMJ compared with all other jump tests (p < 0.05). Pearson's correlations portrayed significant relationships between vertical asymmetries from the SLCMJ and slower sprint times (r = 0.49-0.59). Significant negative relationships were also found between horizontal asymmetries during the triple hop test and horizontal jump performance (r = -0.47 to -0.58) and vertical asymmetries during the SLCMJ and vertical jump performance (r = -0.47 to -0.53). The results from this study highlight that the SLCMJ seems to be the most appropriate jump test for identifying between-limb differences with values ∼12% showing negative associations with sprint times. Furthermore, larger asymmetries are associated with reduced jump performance and would appear to be direction specific. Practitioners can use this information as normative data to be mindful of when quantifying interlimb asymmetries and assessing their potential impact on physical performance in youth female soccer players.
毕晓普、C、里德、P、麦卡宾、J和特纳、A。垂直和水平不对称与精英青年女子足球运动员较慢的短跑和跳跃成绩有关。《力量与体能研究杂志》35(1):56 - 63,2021——与水平跳跃相比，垂直跳跃时肢体间不对称性已被证明更大。在男性青年足球运动员的早期阶段也发现了显著的肢体间差异。此外，鉴于足球运动的多平面性质，通过多次跳跃测试来确定肢体间差异是有必要的。目前，关于青年女子足球运动员不对称性及其对身体表现影响的数据很少。本研究的目的是通过单侧跳跃测试量化肢体间不对称性，并研究其对速度和跳跃成绩的影响。19名精英青年女子足球运动员进行了单腿反向移动跳跃（SLCMJ）、单脚、三脚和交叉单脚跳远距离测试以及20米短跑测试。测试可靠性良好至优秀（组内相关系数=0.81 - 0.99）且变异性可接受（变异系数=1.74 - 5.42%）。单因素方差分析表明，与所有其他跳跃测试相比，SLCMJ的不对称性更大（p < 0.05）。皮尔逊相关性显示，SLCMJ的垂直不对称性与较慢的短跑时间之间存在显著关系（r = 0.49 - 0.59）。在三脚跳测试中的水平不对称性与水平跳跃成绩之间（r = -0.47至-0.58）以及SLCMJ中的垂直不对称性与垂直跳跃成绩之间（r = -0.47至-0.53）也发现了显著的负相关关系。本研究结果表明，SLCMJ似乎是识别肢体间差异的最合适跳跃测试，其值约12%与短跑时间呈负相关。此外，更大的不对称性与跳跃成绩下降相关，且似乎具有方向特异性。从业者可以将这些信息用作规范数据，在量化青年女子足球运动员的肢体间不对称性并评估其对身体表现的潜在影响时加以留意。
