专业和17岁以下女子排球运动员的速度特异性膝盖力量

A. Pelegrinelli, L. D. Dela Bela, M. Silva, Lucas C.R. Rodrigues, J. P. Batista, L. C. Guenka, Josilainne M Dias, L. Brown, R. Carregaro, F. Moura, J. Cardoso
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引用次数: 6

摘要

许多研究调查了排球运动员的等速运动表现,但没有通过表面地图。目的本研究的目的是评估特定速度的等速膝关节伸屈肌力量,并比较专业(PRO)和17岁以下(U17)女子排球运动员的等速膝关节伸屈肌。方法采用横断面实验室研究分为两组:PRO组(n = 12),中位年龄21.3岁;U17组(n = 9),中位年龄15岁。峰值扭矩、总功、平均功率、峰值扭矩角、腿筋-股四头肌扭矩比(H-Q比)和扭矩-角-速度表面图分别从每秒60度、120度和300度(°/s)的膝关节伸展-屈曲进行分析。结果在60°/s时,PRO x = 202.3牛顿米(N·m)(标准差[SD] = 24.4)和U17 x = 141.6牛顿米(30.1)之间的伸肌峰值扭矩存在显著差异(p < 0.001);d = 2.21)以及屈肌峰值扭矩(PRO x = 75.7 N·m[10.3]和U17 x = 57.7 N·m[11.4])在120°/s时(p < 0.001);D = 1.65)为优势肢。在伸展和屈曲的所有速度下,总功和平均功率也有显著的组差异。表面图显示,在较低的速度下,两组的扭矩变化较小,弯曲速度较小。结论不同组女排运动员在等速运动中表现出不同的同心圆膝关节肌力。这些结果表明,即使在同一项运动中,对不同年龄组进行特定力量训练的重要性,并提供了对肌肉力量的深入了解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Velocity-specific knee strength between professional and under-17 female volleyball players
Background Many studies have investigated isokinetic performance in volleyball players but not through surface maps. Objectives The goals of this study were to assess velocity-specific isokinetic knee extensor–flexor muscle strength and to compare the isokinetic knee extensor–flexor muscles between professional (PRO) and under-17 (U17) female volleyball players. Method This cross-sectional laboratory study was developed with two groups: PRO (n = 12), medianage = 21.3 years, and U17 (n = 9), medianage = 15 years. Peak torque, total work, mean power, angle of peak torque, hamstring–quadriceps torque ratio (H–Q ratio) and torque–angle–velocity surface maps were analysed from knee extension–flexion at 60, 120 and 300 degrees per second (°/s). Results Significant differences were identified for extensor peak torque between PRO x = 202.3 Newton metre (N·m) (standard deviation [SD] = 24.4) and U17 x = 141.6 N·m (30.1) at 60 °/s (p < 0.001; d = 2.21) as well as flexor peak torque (PRO x = 75.7 N·m [10.3] and U17 x = 57.7 N·m [11.4]) at 120 °/s (p < 0.001; d = 1.65) for the dominant limb. There were also significant group differences for total work and mean power at all velocities for extension and flexion. Surface maps demonstrated higher torque at lower speeds for both groups with smaller torque changes across velocities for flexion. Conclusion Different groups of female volleyball players showed contrasting concentric knee muscle strength across isokinetic velocities. Clinical implications These results demonstrate the importance of specific strength training for different age groups, even within the same sport, and provide insight into muscle strength.
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