CClinicalTrials.gg
Not yet recruitingNCT07407478FCJUMPUpdated Feb 12, 2026

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

An interventional study of Strength Training Program and Foot Core Exercise Program in Athletic Performance, sponsored by Mudanya University. Not yet recruiting at 1 site in Turkey (Türkiye). Open to male participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-02-12.

Sponsored by Mudanya University · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
43
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Male
01

Study summary

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.

Read the detailed description

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.

02

Conditions studied

  • Athletic Performance

Keywords

  • Foot Core Exercise
  • Jump Performance
  • Volleyball Players
  • Countermovement Jump
  • Force Plates
  • Athletic Performance
03

In context

Lead sponsor

Mudanya University is the lead sponsor of 2 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

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

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
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
43 participants (estimated)

Study arms

  • Active comparator
    Strength Training Group

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

    Behavioral: Strength Training Program

  • Experimental
    Strength Training plus Foot Core Exercise Group

    Experimental: Strength Training Plus Foot Core Exercises Group Description Participants in this group will perform the same standardized lower-extremity strength training program in addition to a foot core exercise program targeting intrinsic and extrinsic foot muscles.

    Behavioral: Strength Training Program · Behavioral: Foot Core Exercise Program

Interventions

  • BehavioralStrength Training Program

    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

  • BehavioralFoot Core Exercise Program

    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)

06

What researchers measure

Primary outcomes

  1. Vertical Jump Height (Countermovement Jump)

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

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

Secondary outcomes

  1. Force-Time Variables During Countermovement Jump

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

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

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: No — Individual participant data will not be shared, as this study is conducted as part of a master's thesis with a limited sample size, and data sharing is not covered by the informed consent approved by the ethics committee.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07407478
Lead sponsor
Mudanya University
Responsible party
Hazal Berfin YILMAZ (Study Director, Mudanya University) — Principal investigator
First posted
Feb 12, 2026
Start date
Mar 2026 (estimated)
Primary completion
Mar 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Feb 12, 2026

Study contacts

Önder Çalışkan, MSc Candidate
Contact
fztondercaliskan@outlook.com
+905379125304
Hazal B Yılmaz, PhD
principal investigator · Mudanya University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion