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Dose-Response effects of Non-Jumping plyometric training on functional strength, power, and musculotendinous viscoelastic properties in sedentary and/or physically inactive older adults: toward precision exercise prescription

NCT ID NCT07891000

Sponsor: University of Americas - Chili Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
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Not yet recruiting This study
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Running, but no longer taking on new participants.
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The trial has finished. Results may not be published yet.
Stopped early
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Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

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Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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First seen Oct 23, 2026 · Last updated Oct 23, 2026

Summary

The goal of this clinical trial is to investigate whether different amounts of plyometric exercise without jumping can improve lower-limb muscle strength, power, and muscle and tendon mechanical properties in sedentary and/or physically inactive older adults. The main questions it aims to answer are: Does performing a higher amount of plyometric exercise without jumping lead to greater improvements in functional muscle strength and power than performing a lower amount? Do different amounts of exercise produce different changes in the mechanical properties of muscles and tendons? Researchers will compare three groups: a high-volume exercise group, a low-volume exercise group, and a control group that will not receive the exercise intervention. This comparison will help determine how the amount of exercise influences physical function and muscle and tendon properties. Participants will: Be randomly assigned to one of the three groups. Complete physical assessments before and after the eight-week study period, including tests of lower-limb strength, power, and muscle and tendon mechanical properties. If assigned to an exercise group, participate in supervised plyometric exercise sessions without jumping twice a week for eight weeks. If assigned to the control group, continue their usual daily activities without participating in the exercise program during the study.

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Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 54 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Dec 2026

An estimate. Start dates often move.

Expected to finish

Mar 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

60 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adults aged 60 to 80 years. * Sedentary and/or physically inactive individuals, defined as engaging in less than 150 minutes of moderate-to-vigorous physical activity per week and/or spending more than 8 hours per day in sedentary activities. * Participation in fewer than two muscle-strengthening exercise sessions per week. * Body mass index below 30 kg/m². * Ability to safely perform lower-limb exercises involving rapid muscle contractions without jumping. * Willingness to participate in the study and provide written informed consent. Exclusion Criteria: * Musculoskeletal injuries affecting the lower limbs within the previous three months. * History of lower-limb surgery within the previous two years. * Cardiovascular diseases or other medical conditions that could compromise participant safety during exercise or physical assessments. * Any physical or medical limitation that prevents the safe execution of the exercise protocol or functional assessments.

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Conditions

The condition(s) this trial relates to.

Motor Activity Sedentary Behavior

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Aging Sedentary behavior / physical inactivity

How to take part

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  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

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