Effects of Overcoming Isometric Unilateral Conditioning Activity on Subsequent Single-Leg Drop Jump in Elite and Amateur Volleyball Players
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- Drop Jump Height
研究概览
简要总结
The pairing of high-effort exercise, called conditioning activity, with a biomechanically similar high-velocity power movement is considered a valid method to effectively facilitate muscle power adaptations. Research has mainly focused on using this method in exercises performed by both limbs, even though sports tasks are often executed through motion sequences produced by a single limb alternately. However, available studies have focused solely on the dominant leg, leaving it unclear if the effectiveness is similar in both legs and how it transfers between them. Therefore, this study aims to evaluate the immediate effects of the isometric split squat exercise on single-leg drop jump performance in volleyball players, considering their training status.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- •no lower-limb serious injury, including tendon or muscle tear,
- •participation in regular resistance training and competition.
- •for the elite group participants competed at the highest national volleyball league for at least two consecutive seasons.
- •for the amateur group participants competed in junior groups outside the highest league level.
排除标准
- 未提供
结局指标
主要结局
Drop Jump Height
时间窗: Immediately pre- and at 4th and 8th minute post-completion of conditioning activity.
Drop jump height estimated via take-off velocity performed on force plates. Participants performed 2 trials at each time-point.
Drop Jump Contact Time
时间窗: Immediately pre- and at 4th and 8th minute post-completion of conditioning activity.
Drop jump contact time was estimated via time spent on the ground between drop and jump transition performed on force plates. Participants performed 2 trials at each time-point.
Drop Jump Reactive Strength Index
时间窗: Immediately pre- and at 4th and 8th minute post-completion of conditioning activity.
Drop jump reactive strength index was estimated via jump height divided by the contact time performed on force plates. Participants performed 2 trials at each time-point.
次要结局
未报告次要终点
研究者
Michal Krzysztofik
PhD
The Jerzy Kukuczka Academy of Physical Education in Katowice