A Volume-Matched Quasi-Experimental Trial Comparing Micro-Dosed and Traditional Plyometric Training on Speed and Explosive Abilities in Elite Under-19 Soccer Players During the Pre-Season
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
- Change in countermovement jump (CMJ) jump height
研究概览
简要总结
The goal of this clinical trial is to learn if a micro-dosed plyometric training program works as well as a traditional plyometric program for improving speed and explosive abilities in elite under-19 soccer players during the pre-season.
The main questions are:
- Does micro-dosed training improve explosive and speed abilites, such as jumping and sprinting, as much as traditional training?
- Does it improve reactivity and change-of-direction ability ?
Researchers will compare two groups:
- Traditional Training Group: 2 sessions per week, about 40 minutes each.
- Micro-dosed Group: 3-4 shorter sessions per week, about 20 minutes each. Both groups will complete the same total weekly training volume.
Participants will:
- Take part in an 8-week plyometric training program during pre-season.
- Complete performance tests (CM jump tests, a 30-meter sprint, and a 15-0-5 change-of-direction test, broad jump test, drop jump test) before and after 8-week plyometric intervention, .
This study will help coaches and players understand if shorter, more frequent plyometric training sessions can be a good alternative to traditional longer sessions when weekly training load is matched.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
盲法说明
Masking was not feasible due to the visible differences in training frequency and scheduling.
入排标准
- 年龄范围
- 17 Years 至 19 Years（Child, Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Active membership in a U19 elite soccer club during the intervention.
- •Medical fitness to participate in plyometric training and testing.
- •Attendance at ≥75% of training sessions.
- •Completion of all mandatory pre- and post-tests.
- •Previous experience with plyometric training and testing procedures.
排除标准
- •Medical limitations preventing safe participation in training or testing.
- •Attendance lower than 75% of scheduled intervention sessions.
- •Failure to complete mandatory baseline or follow-up testing.
- •Injury preventing completion of the intervention.
研究组 & 干预措施
Traditional Plyometric Training Group
Participants in this group completed a traditional plyometric training program during the 8-week pre-season period. The program consisted of 2 sessions per week, each lasting about 40 minutes. Exercises included countermovement jumps, drop jumps, broad jumps, and other standard plyometric drills. The total weekly training volume was matched to the micro-dosed group.
干预措施: Traditional group training program (Behavioral)
Micro-dosed Plyometric Training Group
Participants in this group completed a micro-dosed plyometric training program during the 8-week pre-season period. The program consisted of 3 to 4 shorter sessions per week, each lasting about 20 minutes. The same types of plyometric exercises were used as in the traditional group (e.g., countermovement jumps, drop jumps, broad jumps). The total weekly training volume was matched to the traditional group.
干预措施: Micro-dosed group training program (Behavioral)
结局指标
主要结局
Change in countermovement jump (CMJ) jump height
时间窗: Baseline and after 8 weeks of intervention.
Change in vertical jump height (cm) measured with dual force plates during a countermovement jump, from baseline (pre-test) to post-intervention (8 weeks).
Change in Sprint Speed (30 m sprint test using 1080 Sprint system)
时间窗: Baseline and after 8 weeks of intervention.
Change in sprint velocity (m/s) and split times (0-5 m, 0-10 m, 0-30 m).
Change in Drop Jump Reactive Strength Index (RSI)
时间窗: Baseline and after 8 weeks.
Change in reactive strength index (jump height / ground contact time) measured during drop jump from 30 cm platform.
次要结局
- Change in Standing Broad Jump Distance (SBJ)(Baseline and after 8 weeks.)
- Change in Sprint Mechanics (1080 Sprint)(Baseline and after 8 weeks.)
- Change in Change-of-Direction Performance (15-0-5 test)(Baseline and after 8 weeks.)
研究者
Marián Škorik
PhD Candidate, Faculty of Sports Science and Health, Matej Bel University
Matej Bel University