ABSTRACT: Introduction and objectives: Elastic resistance has been commonly used in the therapeutic and fitness setting. However, the effects of a strength training program using elastic resistance exercises to the explosive power and spike speed, which are very important elements for successful volleyball practice, has not been clearly demonstrated. Therefore, the aim of this study was to establish the effects of 8-week Thera-Band training protocols on the development of spike speed, counter movement jump (CMJ) height, peak power and speed of upper limb performance of young female volleyball players. Methods: The participants consists of 20 competitive female volleyball players who regularly train at the same team and aged 15-17 years (age 16.2 ± 0.7 years). All the players were tested for spike speed, CMJ height, peak power and speed of upper limb performances before and after 8-week training program. The players were divided into Thera-Band Training Group (TTG; n=10) and Control Group (CG; n=10). Both groups continued technical and tactical volleyball training together 3 days (120 min.d.-1) a week. Additionally, TTG attended Thera-Band training program through 8-week, 2 days per week and 2 sessions (60 min.d.-1). Results: The findings of the study showed significant change in CMJ height, peak power and spike speed at the end of 8-week. TTG significantly (p ≤ .001) improved CMJ height, peak power and spike speed, whereas the CG showed significant changes only CMJ height and peak power (p ≤ .05) at the end of 8-week. The effect of resistance exercises was significantly higher as compared to the control group (p < .05). Results demonstrated that the TTG players showed greater improvements in CMJ height (d = 1.31, moderate effect size), and spiking speed (d = 2.93, large effect size) performance than CG. Conclusion: It can be concluded that supervised Thera-Band training contributed development of the performance of spike speed mostly and CMJ height and peak power of lower extremities in young female volleyball players. Due to its effectiveness on muscular performance, the Thera-Band training model can be recommended to the coaches and players in additional to the regular technical training.

中文翻译：

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8周Thera-band训练对年轻女子排球运动员扣球速度，跳跃高度和上肢速度的影响

摘要：简介和目的：弹性抵抗力已普遍用于治疗和健身环境。但是，使用弹性阻力练习的力量训练程序对爆发力和峰值速度的影响，这是成功进行排球练习非常重要的要素，尚未得到明确证明。因此，本研究的目的是建立为期8周的Thera-Band训练方案对年轻女子排球运动员的峰值速度，反跳动作（CMJ）高度，峰值力量和上肢成绩速度发展的影响。方法：参与者包括20名竞争性女排球运动员，他们定期在同一支球队训练，年龄15-17岁（年龄16.2±0.7岁）。测试了所有玩家的峰值速度，CMJ高度，在为期8周的训练计划之前和之后，上肢表现的最大力量和速度。参与者分为Thera-Band训练小组（TTG; n = 10）和对照组（CG; n = 10）。两组每周一起进行为期3天（每天120分钟，d.-1）的技术和战术排球训练。此外，TTG参加了为期8周，每周2天和2节（60分钟-1）的Thera-Band培训计划。结果：研究结果显示，在8周结束时，CMJ高度，峰值功率和峰值速度发生了显着变化。TTG显着（p≤.001）改善了CMJ高度，峰值功率和峰值速度，而CG仅在8周结束时显示出显着变化，只有CMJ高度和峰值功率（p≤.05）。与对照组相比，抵抗运动的效果明显更高（p <.05）。结果表明，与CG相比，TTG播放器在CMJ高度（d = 1.31，中等效果尺寸）和峰值速度（d = 2.93，大效果尺寸）方面显示出更大的改善。结论：可以得出结论，有监督的Thera-Band训练对年轻女子排球运动员的峰值速度，CMJ身高和下肢峰值功率的发展贡献最大。由于其对肌肉表现的有效性，除了常规的技术训练外，Thera-Band训练模型还可以推荐给教练和球员。可以得出结论，有监督的Thera-Band训练在很大程度上促进了年轻女子排球运动员的峰值速度，CMJ高度和下肢峰值功率的发展。由于其对肌肉表现的有效性，除了常规的技术训练外，Thera-Band训练模型还可以推荐给教练和球员。可以得出结论，有监督的Thera-Band训练在很大程度上促进了年轻女排运动员峰值速度的提高以及CMJ身高和下肢峰值力量的发展。由于其对肌肉表现的有效性，除了常规的技术训练外，Thera-Band训练模型还可以推荐给教练和球员。