Efficacy of a Protocol of Plyometric Exercises in the Improvement of Quadriceps Muscle Strength Versus Isometric Exercises With Theraband Elastic Band in Federated Water Polo Players. A Randomized Pilot Study.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 25
- 试验地点
- 2
- 主要终点
- Change from baseline maximum strength in quadriceps after treatment and at month
研究概览
简要总结
Introduction: The improvement of strength affects muscle volume, dynamic stability and sports performance in water polo athletes. Plyometric exercises can improve biomechanics, performance and the most explosive actions during sports. The work done with elastic bands will increase the effectiveness and the resistance on the isometric exercises developed.
Objectives: To evaluate the effectiveness of plyometric exercises in the increase of quadriceps muscle strength, volume and stability dynamic in female athletic of water polo players from 18 to 25 years old.
Study Design: A randomized, multicentric, single-blind clinical study with a follow-up period.
Methodology: 25 water polo players will be recruited and randomly assigned to the two study groups: experimental (plyometric exercises plus isometric exercises with elastic bands) and control (isometric exercises with elastic bands). The intervention will last for 8 weeks, with 3 weekly sessions, of 15 minutes each. The study variables will be: strength (measured with the RM test), muscle volume (using anthropometry), and dynamic stability (through the SEBT test). The analysis of normality will be carried out with the Shapiro Wilk test. In case of homogeneity of the groups, we will use parametric tests: t-student test of repeated measures (difference between evaluations) and ANOVA of repeated means (intra and intersubject effect).
Expected Results: It is expected to observe improvement in muscle strength and quadriceps volume, as well as dynamic stability.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 25 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Swimmers with more than 2 years of sports practice
- •Age range of 18 to 25 years
- •Currently participate in national championships.
排除标准
- •Have some type of musculoskeletal injuries at the time of the study
- •Not signed the informed consent document.
结局指标
主要结局
Change from baseline maximum strength in quadriceps after treatment and at month
时间窗: Screening visit, within the first seven days after treatment and after one month follow-up visit
Researchers will use the 1RM test to measure maximum strength by trial and error, taking into account the nRM (number of repetitions) performing a repetition for each series without exceeding 15 maximum repetitions, or even be effective in less than 10 maximum repetitions increasing the load in each series progressively, depending on the abilities of the athletes. We will perform 5 minutes of light activities, then one minute of stretching, heating of eight repetitions to 50% of 1RM, followed by three repetitions at 70% of 1RM. After 5 minutes of the interval, the 1RM test will be performed. The weight will increase progressively 5kg, three to five times until the maximum RM. The assessment of quadriceps muscle strength will be assessed through the full squat exercise. The unit of measurement is the Kg, indicating a greater amount of Kg, a greater maximum force in quadriceps
次要结局
- Change from baseline dynamic stability after treatment and at month(Screening visit, within the first seven days after treatment and after one month follow-up visit)
- Change from baseline muscle volume in quadriceps after treatment and at month(Screening visit, within the first seven days after treatment and after one month follow-up visit)