Effects of an Elastic Band Rewarm-Up in Highly Trained Female Volleyball Players

January 16, 2026 updated by: Henrique Sousa, University Institute of Maia

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.

Study Overview

Status

Enrolling by invitation

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Portugal
    • Porto District
      • Maia, Porto District, Portugal, 4475-690 Maia
        • University of Maia

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • belong to the U-21 or Senior level of a women's volleyball club.
  • be apart of a national volleyball championship

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Elastic bands rewarm-up
Rewarm-up with elastic bands
Other: EB RWU
Rewarm-up with elastic bands
No Intervention: CG
No rewarm-up

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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.
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.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Institute of Maia

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

February 1, 2026

Primary Completion (Estimated)

February 1, 2026

Study Completion (Estimated)

February 1, 2026

Study Registration Dates

First Submitted

December 9, 2025

First Submitted That Met QC Criteria

January 16, 2026

First Posted (Actual)

January 22, 2026

Study Record Updates

Last Update Posted (Actual)

January 22, 2026

Last Update Submitted That Met QC Criteria

January 16, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • EBT_HS_04

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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