Català Jordi, Moras Gerard, Toro-Román Víctor, Buxadé Carla Pérez-Chirinos, Tuyà-Viñas Silvia, Fernández-Valdés Bruno
National Institute of Physical Education of Catalonia (INEF), University of Barcelona, 083038 Barcelona, Spain.
Research Group in Technology Applied to High Performance and Health, Department of Health Sciences, TecnoCampus, Universitat Pompeu Fabra, Mataró, 08302 Barcelona, Spain.
J Funct Morphol Kinesiol. 2025 Jul 16;10(3):268. doi: 10.3390/jfmk10030268.
: The aim of this study was to analyze and compare movement variability (MV) during the spike jump (S) action with and without a ball in volleyball players of different categories and playing positions. : A total of 48 volleyball players participated in this study. The players were divided according to the following categories: under-14 (U-14) (n = 12); U-16 (n = 12); U-19 (n = 12); and SENIOR (n = 12). Also, they were divided according to playing position: hitters (n = 24); liberos (n = 5); middle blockers (n = 12); and setters (n = 7). The S action with and without a ball was analyzed. Acceleration was analyzed using an IMU device. Acceleration was used to calculate MV through sample entropy (SampEn). : Differences were observed in all categories when comparing the S action with and without the ball ( < 0.001). SampEn was higher in the U-14 category ( < 0.001). Regarding playing positions, SampEn was lower in the hitter position compared to the middle blocker ( < 0.001) and libero ( < 0.001). There were significant inverse correlations between years of experience and SampEn ( < 0.05). : The inclusion of a ball during the S action increases MV. MV is higher in the U-14 category compared to the rest. The hitter position showed lower MV compared to the other playing positions.
本研究的目的是分析和比较不同类别和比赛位置的排球运动员在有球和无球情况下扣球（S）动作期间的运动变异性（MV）。共有48名排球运动员参与了本研究。运动员根据以下类别进行划分：14岁以下（U-14）（n = 12）；16岁以下（U-16）（n = 12）；19岁以下（U-19）（n = 12）；以及成年组（n = 12）。此外，他们还根据比赛位置进行了划分：主攻手（n = 24）；自由人（n = 5）；副攻手（n = 12）；以及二传手（n = 7）。分析了有球和无球情况下的S动作。使用惯性测量单元（IMU）设备分析加速度。通过样本熵（SampEn）利用加速度来计算MV。在比较有球和无球情况下的S动作时，所有类别均观察到差异（<0.001）。U-14类别中的SampEn更高（<0.001）。关于比赛位置，与副攻手（<0.001）和自由人（<0.001）相比，主攻手位置的SampEn较低。经验年限与SampEn之间存在显著的负相关（<0.05）。在S动作中加入球会增加MV。与其他类别相比，U-14类别中的MV更高。与其他比赛位置相比，主攻手位置的MV较低。
