Acute Effect of Plyometric Exercises on Musculotendinous Properties of Quadriceps and Biceps Femoral
试验速览
- 阶段
- 不适用
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- Change from baseline of echo intensity of quadriceps and biceps femoral muscles
研究概览
简要总结
Preventive and rehabilitation programs include plyometric exercises to promote agility, power, and muscle activation pattern during jumping. These exercises also are known to cause a high mechanical load that increases the risk of a musculoskeletal injury. The knowledge regarding the musculoskeletal damage result from this configuration of exercise can help to elaborate safer and effective training and rehabilitation programs. In this study, the investigators will conduct a clinical trial to determine the acute effect of plyometric exercises on damage caused on different portions of quadriceps and biceps femoral's muscles and tendons of quadriceps, and biceps femoral, and its effects on mechanical properties.
详细描述
This is a single-arm clinical trial aiming to determine the acute effect of one session of plyometric exercises on quadriceps and biceps femoral musculotendinous properties in healthy individuals.
The sample size was determined using G*Power software considering the application of ANOVA: Repeated measures, between factors, 90% power, alpha 0.05. Data from muscle echo intensity of the rectus femoral by Muddle et al. (2019) were considered for this calculation, with an effect size 0.44. A total of 30 individuals was required for this study.
The outcomes will include the muscle and tendon quality, and mechanical properties of the tendon. The assessments will be performed at three different moments: before exercise, immediately after, and 48 hours after exercise.
The data analysis will be performed per protocol. Generalized estimating equations will be used to identify the effects of time followed by Bonferroni posthoc. When effects are found, effect sizes will be estimated. Missing data will be estimated by statistical analysis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
盲法说明
The statistical analyzer will be masking for the time factor.
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
- •Who practice physical activity (except jump training);
- •No previous lower extremity muscle injury at least 6 months before the recruitment;
- •No previous lower extremity ligament or tendon injury or surgery;
- •No auditory, vestibular, visual or musculoskeletal injuries or disease that limit the execution of the exercise and assessment protocols;
- •No hypertension, cardiovascular, or respiratory disease.
排除标准
- •Body mass index greater than 30 kg/m².
结局指标
主要结局
Change from baseline of echo intensity of quadriceps and biceps femoral muscles
时间窗: Baseline, immediately after exercise and up to 48 hours exercise
Muscle echo intensity will be assessed for transversal and longitudinal ultrasonography images.
Change from baseline stiffness of patellar tendon
时间窗: Baseline, immediately after exercise and up to 48 hours exercise
Patellar tendon stiffness during 5 seconds rampa contraction protocol. Patellar tendon stiffness will be estimate from force/deformation relationship of tendon.
Change from baseline young modulus of patellar tendon
时间窗: Baseline, immediately after exercise and up to 48 hours exercise
Patellar tendon young modulus during rampa contraction protocol. Young modulus will be estimate from force/deformation relationship of tendon normalized to transverse section area of tendon.
次要结局
- Change from baseline echo intensity of quadriceps and biceps femoral tendons(Baseline, immediately after exercise and up to 48 hours exercise)
研究者
Karine Josibel Velasques Stoelben
Principal Investigator
Universidade Federal do Pampa