Healthy Clinical Trial - Biomechanics Responses to Power & Strength

Status Active, not recruiting

Clinical Trial Summary

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.

Clinical Trial Description

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. ;

Study Design

Related Conditions & MeSH terms

Healthy

Clinical Trial Details

NCT number	NCT04139187
Study type	Interventional
Source	Universidade Federal de Santa Maria
Contact
Status	Active, not recruiting
Phase	N/A
Start date	September 15, 2019
Completion date	December 2020

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Biomechanics Responses to Power and Strength Combined Training

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms