Deng Beiwang, Yan Ruixiang, Sui Xinke, Lin Gesheng, Ding Shicong, Li Duanying, Sun Jian
School of Athletic Training, Guangzhou Sport University, Guangzhou, Guangdong, China.
Guangdong Provincial Key Laboratory of Human Sports Performance Science, Guangzhou Sport University, Guangzhou, Guangdong, China.
PLoS One. 2025 Jun 30;20(6):e0327237. doi: 10.1371/journal.pone.0327237. eCollection 2025.
The concurrent development of strength and power is considered effective for improving jump performance in athletes.Although previous studies have examined the effects of unilateral and bilateral training, there is a lack of systematic research comparing the impact of these two training modes within the framework of Complex-Contrast Training (CCT) on female volleyball players. This study aimed to compare the effects of Unilateral Complex-Contrast Training (UCCT) and Bilateral Complex-Contrast Training (BCCT) on lower limb strength and jump performance in collegiate female volleyball athletes. A total of 16 female volleyball players were randomly assigned to either the UCCT group (n = 8) or the BCCT group (n = 8) using a random number-based randomization method. The training intervention consisted of 2 sessions per week for 8 weeks.Before and after the intervention, participants underwent a series of standardized tests, including Countermovement Jump (CMJ), Squat Jump (SJ), Drop Jump (DJ), Eccentric Utilization Rate (EUR), Standing Long Jump (SLJ), and one-repetition maximum (1-RM) squat. Statistical analysis was conducted using JASP version 0.18.3.0 with a 2 (group) × 2 (time) two-way repeated measures ANOVA. The results showed significant main effects of time (p < 0.001) for CMJ, DJ, SLJ, and 1-RM squat, while SJ and EUR did not exhibit significant improvements. A significant time × group interaction was found for CMJ (p = 0.009), and simple effects analysis indicated that the UCCT group showed a more pronounced improvement. No significant main effects of group or time × group interaction effects were observed for the other variables. Overall, UCCT demonstrated similar effects to BCCT in improving horizontal jump performance and maximal lower limb strength, but showed a greater advantage in enhancing vertical jump performance.
力量和爆发力的同时发展被认为对提高运动员的跳跃成绩有效。尽管先前的研究已经考察了单侧训练和双侧训练的效果，但在复杂对比训练（CCT）框架内比较这两种训练模式对女排运动员影响的系统性研究仍很缺乏。本研究旨在比较单侧复杂对比训练（UCCT）和双侧复杂对比训练（BCCT）对大学女排运动员下肢力量和跳跃成绩的影响。采用基于随机数的随机化方法，将16名女排运动员随机分为UCCT组（n = 8）或BCCT组（n = 8）。训练干预包括每周2次，共8周。干预前后，参与者进行了一系列标准化测试，包括反向纵跳（CMJ）、深蹲跳（SJ）、跳深（DJ）、离心利用率（EUR）、立定跳远（SLJ）和1次重复最大重量（1-RM）深蹲。使用JASP 0.18.3.0版本进行统计分析，采用2（组）×2（时间）双向重复测量方差分析。结果显示，CMJ、DJ、SLJ和1-RM深蹲在时间上有显著的主效应（p < 0.001），而SJ和EUR没有显著改善。CMJ存在显著的时间×组交互作用（p = 0.009），简单效应分析表明UCCT组的改善更为明显。其他变量未观察到显著的组主效应或时间×组交互效应。总体而言，UCCT在提高水平跳跃成绩和最大下肢力量方面与BCCT效果相似，但在增强垂直跳跃成绩方面具有更大优势。
