Physical Performance ParametersNCT07360652
Effects of an Elastic Band Rewarm-Up in Highly Trained Female Volleyball Players
A study testing EB RWU in people with Physical Performance Parameters, run by University Institute of Maia at 1 site in Portugal.
Trial summary
This study aims to examine the acute effects of an elastic band rewarm-up on vertical jump performance in highly trained female volleyball players. A randomized crossover design will be used, with participants completing three sessions. Read more about this study
- Who is it for?
- Any age, women onlyHealthy volunteers can take part
- Conditions the study is for
- Physical Performance Parameters
- What is being tested?
- EB RWU
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 sitePortugal
- Study dates
- Feb 2026to Feb 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 Any age
- Women only
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- belong to the U-21 or Senior level of a women's volleyball club.
- be apart of a national volleyball championship
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Acute Effects of an Elastic Band Rewarm-Up Protocol on Vertical Jump Performance in Highly Trained Female Volleyball Players: a Crossover Study
This study aims to examine the acute effects of an elastic band rewarm-up on vertical jump performance in highly trained female volleyball players. A randomized crossover design will be used, with participants completing three sessions. Session 1 will serve as a familiarization with the testing and the rewarm-up protocol. In Sessions 2 and 3, participants will be divided into two groups. Group 1 will perform a standard warm-up followed by 5 minutes of rest, then an elastic band rewarm-up, while Group 2 will perform the warm-up followed by 5 minutes of rest only. In the subsequent session, the protocols will be crossed over so that each participant completes both conditions. Vertical jump performance will be assessed using the Chronojump system, evaluating both countermovement jumps (CMJ) and Abalakov jumps. To mimic real-game conditions, athletes will rotate between the vertical jump evaluations and simulated match play, allowing investigation of the acute effects of an elastic band rewarm-up on explosive lower-limb performance during volleyball-specific activity.
- Conditions
- Physical Performance Parameters
- Being tested
- EB RWU
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
EB RWUOther
Rewarm-up with elastic bands
| Study group | Role | What they receive |
|---|---|---|
| Elastic bands rewarm-up | Experimental | Rewarm-up with elastic bands Receives: Other: EB RWU |
| CG | No intervention | No rewarm-up |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vertical Jump
Jump height and power will be evaluated using Chronojump system, evaluating both countermovement jumps (CMJ) and Abalakov jumps. The players will perform the CMJ, where they will begin from an upright position, with their hands on their hips; a rapid downward movement to a knee angle of ∼90°, immediately transitioning to propel themselves upwards into the air. The abalakov jump is similar to the CMJ; the only difference is that the hands can move freely while jumping.
Measured: The evaluations will be conducted at baseline (before the warm-up), immediately after the warm-up intervention, after the 5 minute rest, and after 4 minutes, 8 minutes and 12 minutes of the simulated match.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jan 2026
- Study startFeb 2026 (estimated)
- Primary completionFeb 2026 (estimated)
- Study completionFeb 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Physical Performance ParametersStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University Institute of Maia
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Henrique Sousa, University of Maia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07360652
- Sponsor's protocol ID
- EBT_HS_04
- Status last verified
- Jan 2026
- First submitted
- 9 Dec 2025
- Last updated
- 22 Jan 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 22 Jan 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Acute Effects of an Elastic Band Rewarm-Up Protocol on Vertical Jump Performance in Highly Trained Female Volleyball Players: a Crossover Study
- ClinicalTrials.gov ID
- NCT07360652
- Acronym / sponsor ID
- EBT_HS_04
- Conditions
- Physical Performance Parameters
- Study type
- Interventional
- Recruitment status
- Enrolling by invitation
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- University Institute of MaiaUniversity, hospital or other
- Study start
- Feb 2026 (estimated)
- Primary completion
- Feb 2026 (estimated)
- Study completion
- Feb 2026 (estimated)
- First posted
- 22 Jan 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study aims to examine the acute effects of an elastic band rewarm-up on vertical jump performance in highly trained female volleyball players. A randomized crossover design will be used, with participants completing three sessions. Session 1 will serve as a familiarization with the testing and the rewarm-up protocol. In Sessions 2 and 3, participants will be divided into two groups. Group 1 will perform a standard warm-up followed by 5 minutes of rest, then an elastic band rewarm-up, while Group 2 will perform the warm-up followed by 5 minutes of rest only. In the subsequent session, the protocols will be crossed over so that each participant completes both conditions. Vertical jump performance will be assessed using the Chronojump system, evaluating both countermovement jumps (CMJ) and Abalakov jumps. To mimic real-game conditions, athletes will rotate between the vertical jump evaluations and simulated match play, allowing investigation of the acute effects of an elastic band rewarm-up on explosive lower-limb performance during volleyball-specific activity.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Elastic bands rewarm-up | Experimental | Other: EB RWURewarm-up with elastic bands |
| CG | No intervention | –No rewarm-up |
Who may qualify
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (2 listed)
- belong to the U-21 or Senior level of a women's volleyball club.
- be apart of a national volleyball championship
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| EB RWURewarm-up with elastic bands | Other | Elastic bands rewarm-up |
Primary outcome
Vertical Jump
Time frame: The evaluations will be conducted at baseline (before the warm-up), immediately after the warm-up intervention, after the 5 minute rest, and after 4 minutes, 8 minutes and 12 minutes of the simulated match.
Jump height and power will be evaluated using Chronojump system, evaluating both countermovement jumps (CMJ) and Abalakov jumps. The players will perform the CMJ, where they will begin from an upright position, with their hands on their hips; a rapid downward movement to a knee angle of ∼90°, immediately transitioning to propel themselves upwards into the air. The abalakov jump is similar to the CMJ; the only difference is that the hands can move freely while jumping.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jan 2026.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing EB RWU in people with Physical Performance Parameters, run by University Institute of Maia at 1 site in Portugal.
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 2 inclusion and 0 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: enrolling by invitation, as of the sponsor's last update on 22 Jan 2026. 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 Portugal. 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?
This study is still under way. Results are not available in the source record yet.
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?
Vertical Jump (time frame: The evaluations will be conducted at baseline (before the warm-up), immediately after the warm-up intervention, after the 5 minute rest, and after 4 minutes, 8 minutes and 12 minutes of the simulated match.). 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 22 Jan 2026.