Which jump metric is best? new study aims to settle the debate
NCT ID NCT07475078
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two methods for measuring how well people jump: the Reactive Strength Index (RSI) and the Dynamic Rebound Index (DRI). Fifty physically active adults will perform drop jumps from different heights. The goal is to see which index gives a clearer picture of performance and whether they provide different information.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * Aged 18 years or older. * Physically active (engaging in regular physical activity at least 3 times per week - minimum of 180 min of physical activity). Exclusion Criteria: * Any musculoskeletal injuries at the time of data collection. * Any medical condition that could compromise physical performance or safety during testing.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Maia
Maia, Porto District, 4475-690 Maia, Portugal
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