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HealthyNCT04273971

Acute Effect of Plyometric Exercises on Musculotendinous Properties

A study testing Plyometric exercises in people with Healthy, run by Universidade Federal de Santa Maria at 1 site in Brazil.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial 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. Read more about this study

Who is it for?
Ages 18 to 30 years, men onlyHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
Plyometric exercises
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteBrazil
Study dates
20 Feb 2020to 30 Mar 2022
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 30 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • 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.

Who cannot join

  • Body mass index greater than 30 kg/m².

Trial locations and contacts

1 site in 1 country.

Brazil1 site
  • Karine Josibel Velasques Stoelben

    Uruguaiana, Rio Grande do Sul, 97502772

Other trials in Brazil

About this study

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

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.

Read the 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
Being tested
Plyometric exercises
Keywords
Adult, Lower extermity, Plyometric exercise, Muscle properties

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Plyometric exercisesOther

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

Study groups in NCT04273971
Study groupRoleWhat they receive
Plyometric exerciseExperimentalNot described
Receives: Other: Plyometric exercises

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from baseline of echo intensity of quadriceps and biceps femoral muscles

    Muscle echo intensity will be assessed for transversal and longitudinal ultrasonography images.

    Measured: Baseline, immediately after exercise and up to 48 hours exercise

  2. Change from baseline stiffness of patellar tendon

    Patellar tendon stiffness during 5 seconds rampa contraction protocol. Patellar tendon stiffness will be estimate from force/deformation relationship of tendon.

    Measured: Baseline, immediately after exercise and up to 48 hours exercise

  3. Change from baseline young modulus of patellar tendon

    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.

    Measured: Baseline, immediately after exercise and up to 48 hours exercise

Secondary outcomes (1)
  1. Change from baseline echo intensity of quadriceps and biceps femoral tendons

    Tendons echo intensity will be assessed for transversal and longitudinal ultrasonography images.

    Measured: Baseline, immediately after exercise and up to 48 hours exercise

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Feb 2020
  2. Study start20 Feb 2020
  3. Primary completion5 Oct 2021 (estimated)
  4. Study completion30 Mar 2022 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
Single-arm design where all participants receive treatment.
Masking
None (open label)
Enrolment
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04273971
Sponsor's protocol ID
20180702141429
Status last verified
Nov 2020
First submitted
13 Feb 2020
Last updated
5 Nov 2020
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: The investigators intend to publish the results in an open-access journal, indexed at the Directory of Open Access Journals, with the copyrights transferred to the authors. Details regarding the study's design and statistical plan can be obtained consulting the trial's protocol. Data on other outcomes could be requested contacting the PI.

Questions about this trial

What is this clinical trial studying?

A study testing Plyometric exercises in people with Healthy, run by Universidade Federal de Santa Maria at 1 site in Brazil.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 5 Nov 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from baseline of echo intensity of quadriceps and biceps femoral muscles (time frame: Baseline, immediately after exercise and up to 48 hours exercise). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Nov 2020.

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