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

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.

Enrolling by Invitation

Interested in participating?

Request Info

Key information

Conditions

Physical Performance Parameters

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

University of Maia

Maia, Porto District, 4475-690 Maia, Portugal

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Treatment and study plan

EB RWU

Other

Rewarm-up with elastic bands

Primary outcomes

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.

Sponsors and collaborators

Lead sponsor

University Institute of Maia

Other

Registry information

Official study title

Acute Effects of an Elastic Band Rewarm-Up Protocol on Vertical Jump Performance in Highly Trained Female Volleyball Players: a Crossover Study

Important dates

Study start: 2026
Primary completion: 2026
Study completion: 2026
First posted: Jan 22, 2026
Registry last updated: Jan 22, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Enrolling by Invitation