NCT04273971

Acute Effect of Plyometric Exercises on Musculotendinous Properties

Acute Effect of Plyometric Exercises on Musculotendinous Properties of Quadriceps and Biceps Femoral

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Universidade Federal de Santa Maria · Academic / Other
• Sex: Male
• Age: 18 Years – 30 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

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.

Conditions

• Healthy

Interventions

Type	Name	Description
OTHER	Plyometric exercises	Plyometric exercises will be composed of vertical jumps, box jumps, half squat jumps, high straight jumps, bounding jumps, drop jumps and 10-m sprint.

Timeline

• Start date: 2020-02-20
• Primary completion: 2021-10-05
• Completion: 2022-03-30
• First posted: 2020-02-18
• Last updated: 2020-11-05

Locations

1 site across 1 country: Brazil