Differential Time-Course Effects of Weighted and Unweighted Plyometric Conditioning on Vertical Jump Performance in Young Male Soccer Players
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Vertical Jump Height
研究概览
简要总结
Explosive lower-limb power is essential for soccer performance and contributes to jumping, sprinting, and rapid changes of direction. Plyometric exercises are commonly used during warm-up to improve neuromuscular readiness and may enhance subsequent athletic performance through post-activation performance enhancement (PAPE). However, it remains unclear whether adding external load during plyometric conditioning provides greater benefits than performing the same exercises without additional load.
The purpose of this study is to compare the acute effects of weighted and unweighted plyometric conditioning on vertical jump performance in young male soccer players. Participants complete two experimental sessions separated by 48 hours. In one session, they perform a standardized single-leg plyometric protocol without external load, and in the other session they perform the same protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump height is assessed before exercise and at several time points after the conditioning activity to examine the time course of performance changes.
The findings of this study are expected to improve understanding of the optimal use of weighted plyometric conditioning during warm-up and provide practical guidance for coaches and sports practitioners seeking to maximize explosive performance before training and competition.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Healthy male soccer players aged 18 to 30 years.
- •Actively participating in organized soccer training.
- •Minimum of 2 years of structured plyometric training experience.
- •Competing at the regional development league level.
- •Free from lower-limb musculoskeletal injury during the previous 4 months.
- •Able to perform maximal jumping tasks.
- •Provided written informed consent prior to participation.
排除标准
- •History of lower-extremity surgery within the previous year.
- •Current lower-limb pain or discomfort during jumping activities.
- •Neurological, cardiovascular, or orthopedic disorders affecting neuromuscular performance.
- •Use of performance-enhancing substances.
- •Failure to comply with study procedures or testing instructions.
研究组 & 干预措施
Weighted Plyometric Conditioning
Participants performed a standardized single-leg plyometric conditioning protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity.
干预措施: Weighted Plyometric Conditioning (Behavioral)
Unweighted Plyometric Conditioning
Participants performed the same standardized single-leg plyometric conditioning protocol without external load. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity.
干预措施: Unweighted Plyometric Conditioning (Behavioral)
结局指标
主要结局
Vertical Jump Height
时间窗: Baseline, 15 seconds, 2 minutes, 4 minutes, and 8 minutes after each intervention session
Vertical jump height (cm) measured before the plyometric conditioning protocol (baseline) and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after weighted and unweighted plyometric conditioning.
次要结局
- Area Under the Curve (AUC) of Vertical Jump Performance(Immediately after completion of each intervention session)
- Performance Slope(Immediately after completion of each intervention session)
- Peak Vertical Jump Height(15 seconds to 8 minutes after each intervention session)
- Time to Peak Performance(15 seconds to 8 minutes after each intervention session)
研究者
Görkem Açar
Director
Istanbul Gelisim University