Lower Extremities Biomechanics Responses to Power and Strength Combined Training in Adults: a Randomized Clinical Trial
试验速览
- 阶段
- 不适用
- 入组人数
- 32
- 试验地点
- 1
- 主要终点
- Change from baseline peak sagittal plane angle of ankle, knee and hip from both legs
研究概览
简要总结
Anterior cruciate ligament (ACL) is the most frequently injured knee ligament during performance of recreational activities and sports. In the United States, the annual incidence is 68.6 per 100,000 people per year and in Brazil, the estimation of ACL reconstruction increases 64%. There are different biomechanical profiles of risk factors for an ACL injury variable, the ligament dominance, the quadriceps dominance, the trunk dominance, and the leg dominance. Thus, the purpose of this study is to investigate the biomechanics adaptations after power and strength combined training protocol in healthy individuals. A second aim is to determine the effect of the training on knee injury risk factors.
详细描述
This is a parallel randomized clinical trial comparing the effect of combined training with power and strength exercises on lower extremity biomechanics in healthy individuals.
The sample size was calculated with G*Power software using the ANOVA: Repeated measures, within-between interaction, 90% power, alpha 0.05, and 30% drop-out. Data from the tuck jump test (knee flexion range) by Makaruk (2014) were considered for this calculation with effect size 0.46. Thus, a total of 32 individuals (16 per group) is required for this study. To ensure the proper simple size, after collecting the first five participants per group, the sample size will be checked again.
The participants will be randomized in experimental and no intervention groups inside each risk profile group. Randomization ratio will be 1:1 and interventions will last 10 weeks, with two weekly sessions for the exercise arms.
The outcomes will include functional clinical tests, kinematic and kinetic variables during landing tasks, and strength of knee and hip muscles.
The data analysis will be performed by intention to treat and per protocol. Generalized estimating equations will be used to identify interaction effects of groups and time followed by Bonferroni post-hoc. When effect are found, effect size will be estimated. Missing data will be estimate by statistical analysis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Investigator, Outcomes Assessor)
盲法说明
Statistical analyzer will be masking.
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
- •Male sex;
- •Age between 18 and 30 years old;
- •Who practice physical activity (except: strength and jump training) between 80 and 150 minute per week;
- •No previous muscle lower extremity injury at least 6 months prior to recruitment;
- •No previous ligament and tendon lower extremity injury or surgery;
- •No auditory, vestibular, visual or musculoskeletal injuries or disease that impairment the execution of assessments or training protocol;
- •No hypertension, cardiovascular or respiratory disease.
排除标准
- •Body mass index greater than 35 kg/m².
研究组 & 干预措施
Experimental
Individuals randomized to experimental group.
干预措施: Combined training with power and strength exercises (Other)
No Intervention Control
Individuals without quadriceps dominance randomized to no intervention group.
结局指标
主要结局
Change from baseline peak sagittal plane angle of ankle, knee and hip from both legs
时间窗: Baseline and up to 10 weeks
Peak angle of sagittal plane during landing task
Change from baseline value of sagittal plane angles for ankle, knee, hip, pelvis from both legs, and trunk
时间窗: Baseline and up to 10 weeks
Value at initial contact instant and maximal knee flexion instant of landing task
Change from baseline value of frontal plane angles for ankle, knee, hip, pelvis from both legs, and trunk
时间窗: Baseline and up to 10 weeks
Value at initial contact instant and maximal knee flexion instant of landing task
Change from baseline value of transverse plane angles for hip, pelvis from both legs, and trunk
时间窗: Baseline and up to 10 weeks
Value at initial contact instant and maximal knee flexion instant of landing task
Change from baseline peak frontal plane angle of knee and hip from both legs
时间窗: Baseline and up to 10 weeks
Peak angle of frontal plane during landing task
Change from baseline range of knee frontal plane angle from both legs
时间窗: Baseline and up to 10 weeks
Range of frontal plane angle between initial contact instant and maximal knee flexion instant of landing task
Change from baseline range of knee sagittal plane angle from both legs
时间窗: Baseline and up to 10 weeks
Range of sagittal plane angle between initial contact instant and maximal knee flexion instant of landing task
Change from baseline value of sagittal plane joint moment knee and hip from both legs
时间窗: Baseline and up to 10 weeks
Value at initial contact instant and maximal knee flexion instant of landing task
Change from baseline value of frontal plane joint moment knee and hip from both legs
时间窗: Baseline and up to 10 weeks
Value at initial contact instant and maximal knee flexion instant of landing task
Change from baseline peak of knee frontal plane joint moment from both legs
时间窗: Baseline and up to 10 weeks
Peak of joint moment during landing task
Change from baseline value of ground reaction force vertical component from both legs
时间窗: Baseline and up to 10 weeks
Value at maximal knee flexion instant of landing task
Change from baseline value of loading rate from both legs
时间窗: Baseline and up to 10 weeks
Value calculated by relation between peak of ground reaction force vertical component and time to peak from initial contact during landing task
Change from baseline peak of ground reaction force vertical component from both legs
时间窗: Baseline and up to 10 weeks
Peak of ground reaction force during landing task
Change from baseline value of muscle maximal isometric strength for knee extensors and flexors, and hip aductors and abductors from both legs
时间窗: Baseline and up to 10 weeks
Value of maximal isometric strength
次要结局
- Change from baseline pennation angle of muscle fibers of knee extensors and flexors from both legs(Baseline and up to 10 weeks)
- Change from baseline muscle fascicle length of knee extensors and flexors from both legs(Baseline and up to 10 weeks)
- Change from baseline muscle thickness of knee extensors and flexors from both legs(Baseline and up to 10 weeks)
- Change from baseline power value of ankle, knee and hip joints from both legs(Baseline and up to 10 weeks)
- Change from baseline dynamic strength of lower extremities muscles(Baseline and up to 10 weeks)
- Change from baseline maximal dorsiflexion amplitude of ankle joint from both legs(Baseline and up to 10 weeks)
- Change from baseline dynamic balance of lower extremities from both legs(Baseline and up to 10 weeks)
- Change from baseline dynamic balance index of asymmetry between legs(Baseline and up to 10 weeks)
- Change from baseline quality of dynamic movement of lower extremities from both legs(Baseline and up to 10 weeks)
- Change from baseline asymmetry index of quality of dynamic movement between legs(Baseline and up to 10 weeks)
- Change from baseline functional physical performance of lower extremities from both legs(Baseline and up to 10 weeks)
- Change from baseline asymmetry index of functional physical performance between legs(Baseline and up to 10 weeks)
研究者
Karine Josibel Velasques Stoelben
Principal Investigator
Universidade Federal do Pampa