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NCT Number: NCT07407478

Effect of Foot Core Exercises on Jump Performance in Professional Volleyball Players

Brief Summary

The purpose of this study is to investigate the effect of foot core exercises on jump performance in professional volleyball players. Participants will be randomly assigned to two groups. The first group will perform a strength training program only, while the second group will perform foot core exercises in addition to the same strength training program. Jump performance will be assessed using the Countermovement Jump (CMJ) test, and performance scores will be obtained through force-time analysis using the ForceDecks system. The findings of this study are expected to contribute to the development of training programs aimed at improving performance and reducing injury risk in professional volleyball players.

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Key information

Conditions

Athletic Performance

Age range

18 year–35 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

About this study

Detailed Description

This study is designed to examine the effects of foot core exercises on jump performance in professional volleyball players. Participants will be divided into two groups: a control group and an intervention group. The control group will follow a standardized strength training program, while the intervention group will perform the same strength training program combined with additional foot core exercises.

Jump performance will be evaluated using the Countermovement Jump (CMJ) test. Kinetic variables derived from force-time data will be collected using the ForceDecks system. Pre- and post-intervention measurements will be compared to determine the effects of the training programs.

The results of this study are expected to provide evidence-based information for designing training programs that enhance athletic performance and help reduce injury risk in professional volleyball players.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Male professional volleyball players aged 18 to 35 years
  • Actively licensed athletes competing in clubs affiliated with the Turkish Volleyball Federation
  • Regular participation in team training sessions without interruption for at least the past 3 months
  • No history of surgery or serious injury involving the lower extremities (foot, ankle, knee, or hip) within the last 6 months
  • Agreement not to participate in any additional strength, balance, or proprioception-based exercise programs during the study period
  • No medical or physiological condition that would prevent participation in the Countermovement Jump (CMJ) test performed using the ForceDecks system
  • Voluntary participation with written informed consent obtained prior to enrollment

Exclusion criteria

  • Presence of deformity, chronic pain, or functional impairment in the foot or ankle
  • History of lower extremity orthopedic surgery within the past 6 months
  • History of neurological or vestibular disorders, or systemic diseases affecting balance
  • Participation in physiotherapy interventions, rehabilitation protocols, or exercise programs outside the scope of the study during the study period

Treatment and study plan

Strength training program

Behavioral

Description Participants will perform a standardized lower-extremity strength training program routinely used for professional volleyball players.

Arms Assigned

  • Strength Training Group
  • Strength Training Plus Foot Core Exercises Group

Foot Core Exercise Program

Behavioral

Description Participants will perform foot core exercises targeting intrinsic and extrinsic foot muscles. The exercises are designed to improve foot stability and functional control.

Arms Assigned ✔️ Strength Training Plus Foot Core Exercises Group

❌ Strength Training Group (işaretleme)

Primary outcomes

  1. Vertical Jump Height (Countermovement Jump)

    Time frame: Baseline and post-intervention (approximately 8 weeks)

    Maximum vertical jump height measured during the Countermovement Jump (CMJ) test.

Secondary outcomes

  1. Force-Time Variables During Countermovement Jump

    Time frame: Baseline and post-intervention (approximately 8 weeks)

    Force-time variables obtained from force platform measurements during the Countermovement Jump (CMJ) test.

Study contacts

Contact information is provided by the study sponsor or research team.

Önder Çalışkan, MSc Candidate

CONTACT

[email protected]

+905379125304

Sponsors and collaborators

Lead sponsor

Mudanya University

Other

Registry information

Official study title

Effect of Foot Core Exercises on Jump Performance in Professional Volleyball Players: An Objective Evaluation Using ForceDecks

Acronym: FCJUMP

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Feb 12, 2026
Registry last updated
Feb 12, 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.

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