NCT07414238

Brief Summary

This study aims to compare the immediate effects of vibration and non-vibration foam rolling on the biomechanical and viscoelastic properties of knee flexor and extensor muscles in young male recreational athletes. Fourteen athletes will be included in this study, planned as a randomized controlled cross-over study. All athletes will complete three interventions: 1) vibration foam rolling (VFR), 2) non-vibration foam rolling (FR), and 3) rest control. Pre- and post-test assessment will include the biomechanical and viscoelastic properties of knee flexor and extensor muscles, assessed with the MyotonPro.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
14

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 4, 2026

Completed
6 days until next milestone

Study Start

First participant enrolled

February 10, 2026

Completed
7 days until next milestone

First Posted

Study publicly available on registry

February 17, 2026

Completed
8 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 25, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 25, 2026

Completed
Last Updated

March 13, 2026

Status Verified

March 1, 2026

Enrollment Period

15 days

First QC Date

February 4, 2026

Last Update Submit

March 12, 2026

Conditions

Keywords

AthletesBiceps femorisMyofascial releaseRectus femoris

Outcome Measures

Primary Outcomes (3)

  • Muscle tone

    The muscle tone (Hz), as a biomechanical property of the knee flexors and extensors, will be assessed using the MyotonPro (Myoton AS, Tallinn, Estonia). The rectus femoris will be preferred as the primary extensor and the biceps femoris as the principal flexor for the assessment, due to their anatomical and functional centrality. To ensure accuracy, the probe will be applied perpendicularly in three successive increments, with automatic alerts for any deviation. The rectus femoris measurement will be taken at the midpoint between the anterior superior iliac spine and the medial patellar border, with the subject supine and a 20 cm roller under the knees. For the biceps femoris, the subject will be prone with an ankle pillow for relaxation, with measurements taken at the midpoint of the long head's longitudinal axis to ensure consistency. Each muscle will be measured twice in immediate succession, using the mean for analysis.

    one week

  • Stiffness

    The stiffness (N/m), as a biomechanical property of the knee flexors and extensors, will be assessed using the MyotonPro (Myoton AS, Tallinn, Estonia). The rectus femoris will be preferred as the primary extensor and the biceps femoris as the principal flexor for the assessment, due to their anatomical and functional centrality. To ensure accuracy, the probe will be applied perpendicularly in three successive increments, with automatic alerts for any deviation. The rectus femoris measurement will be taken at the midpoint between the anterior superior iliac spine and the medial patellar border, with the subject supine and a 20 cm roller under the knees. For the biceps femoris, the subject will be prone with an ankle pillow for relaxation, with measurements taken at the midpoint of the long head's longitudinal axis to ensure consistency. Each muscle will be measured twice in immediate succession, using the mean for analysis.

    one week

  • Elasticity

    The elasticity (unitless), as a biomechanical property of the knee flexors and extensors, will be assessed using the MyotonPro (Myoton AS, Tallinn, Estonia). The rectus femoris will be preferred as the primary extensor and the biceps femoris as the principal flexor for the assessment, due to their anatomical and functional centrality. To ensure accuracy, the probe will be applied perpendicularly in three successive increments, with automatic alerts for any deviation. The rectus femoris measurement will be taken at the midpoint between the anterior superior iliac spine and the medial patellar border, with the subject supine and a 20 cm roller under the knees. For the biceps femoris, the subject will be prone with an ankle pillow for relaxation, with measurements taken at the midpoint of the long head's longitudinal axis to ensure consistency. Each muscle will be measured twice in immediate succession, using the mean for analysis.

    one week

Secondary Outcomes (2)

  • The mechanical stress relaxation time

    one week

  • The ratio of relaxation and deformation time

    one week

Study Arms (3)

VFR Group

ACTIVE COMPARATOR

Athletes will be performed three sets of VFR for 30 s, with a 30 s break between each set and exercise. The rolling frequency will be standardized using a metronome set at 60 beats per minute. Athletes will be instructed to roll at a velocity of two metronome beats for each rolling direction. Intensity of pressure will be controlled with a target rating of 7 of 10 on a Numerical Rating Scale (0 = no discomfort and 10 = maximum discomfort) during VFR intervention. The target muscle groups will be the anterior and posterior thigh. During VFR, the vibrator booster will be set to a frequency of 48 hz, which is within the optimal frequency range (12 to 90 hz) to influence the musculoskeletal system, and an amplitude of 1.95 mm.

Other: VFR

FR Group

ACTIVE COMPARATOR

Athletes will be performed three sets of FR for 30 s, with a 30 s break between each set and exercise. The rolling frequency will be standardized using a metronome set at 60 beats per minute. Athletes will be instructed to roll at a velocity of two metronome beats for each rolling direction. Intensity of pressure will be controlled with a target rating of 7 of 10 on a Numerical Rating Scale (0 = no discomfort and 10 = maximum discomfort) during FR intervention. The target muscle groups will be the anterior and posterior thigh. The FR will be conducted using the same vibration foam rolling device, but with the vibration mode deactivated. This ensures that the physical dimensions and material properties of the roller remain constant across conditions, with the only variable being the presence or absence of mechanical vibration.

Other: FR

Control Group

NO INTERVENTION

No intervention will be applied to the control group.

Interventions

VFROTHER

Athletes will be performed three sets of VFR for 30 s, with a 30 s break between each set and exercise. The rolling frequency will be standardized using a metronome set at 60 beats per minute. Athletes will be instructed to roll at a velocity of two metronome beats for each rolling direction. Intensity of pressure will be controlled with a target rating of 7 of 10 on a Numerical Rating Scale (0 = no discomfort and 10 = maximum discomfort) during VFR intervention. The target muscle groups will be the anterior and posterior thigh. During VFR, the vibrator booster will be set to a frequency of 48 hz, which is within the optimal frequency range (12 to 90 hz) to influence the musculoskeletal system, and an amplitude of 1.95 mm.

VFR Group
FROTHER

Athletes will be performed three sets of FR for 30 s, with a 30 s break between each set and exercise. The rolling frequency will be standardized using a metronome set at 60 beats per minute. Athletes will be instructed to roll at a velocity of two metronome beats for each rolling direction. Intensity of pressure will be controlled with a target rating of 7 of 10 on a Numerical Rating Scale (0 = no discomfort and 10 = maximum discomfort) during FR intervention. The target muscle groups will be the anterior and posterior thigh. The FR will be conducted using the same vibration foam rolling device, but with the vibration mode deactivated. This ensures that the physical dimensions and material properties of the roller remain constant across conditions, with the only variable being the presence or absence of mechanical vibration.

FR Group

Eligibility Criteria

Age18 Years - 22 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • To volunteer to participate in the study
  • To engage in sports activities at least 2-3 days a week

You may not qualify if:

  • Players with a history of major sports injury or time-loss injury that required surgery
  • Musculoskeletal problems that compromised their performance in the study
  • A history of lower extremity pathology in the 3 months before the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Manisa Celal Bayar University

Manisa, Turkey (Türkiye)

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
Outcome measures assessments will be performed by an investigator who is blinded to group allocation
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Randomized controlled cross-over study
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

February 4, 2026

First Posted

February 17, 2026

Study Start

February 10, 2026

Primary Completion

February 25, 2026

Study Completion

February 25, 2026

Last Updated

March 13, 2026

Record last verified: 2026-03

Locations