HealhtyNCT07494903
Effects of Vibrational Therapy on Pelvic Floor Muscle Strength and Tone in Healthy Women
A study testing High frequency vibration group, Moderate frequency vibration group and Low frequency vibration group in people with Healhty, run by Universidad Europea de Madrid.
Trial summary
This quasi-experimental study aims to evaluate the effects of mechanical vibration applied to the pelvic floor musculature in healthy women aged 18-45. The intervention involves vibrational therapy targeting the central fibrous nucleus of the perineum, with the goal of assessing changes in muscle tone, strength, and… Read more about this study
- Who is it for?
- Ages 18 to 45 yearsHealthy volunteers can take part
- Conditions the study is for
- Healhty
- What is being tested?
- High frequency vibration group, Moderate frequency vibration group and Low frequency vibration group
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- No sites listed yet
- Study dates
- 1 Jun 2026to 1 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 45 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Throughout the intervention (ongoing during each session) and Post-intervention (after 8 weeks of treatment).
Who cannot join
- 1. Urogenital Infections: Presence of any active urogenital infections. 2. Abdominal or Pelvic Surgery: History of abdominal or pelvic surgery. 3. Active Menstruation: Women who are menstruating at the time of the study. 4. Breastfeeding: Participants who are actively breastfeeding. 5. Mictrurition Symptoms: Presence of any urinary symptoms. 6. Pain: Pain upon palpation of the central fibrous nucleus of the perineum. 7. Sensory Alterations: Presence of altered sensitivity such as hypoalgesia, hyperalgesia, or allodynia.
- 8. Spinal Lesions: History of spinal cord injuries. 9. Neurological Conditions: Any neurological disorders. 10. Pelvic Organ Prolapse: Diagnosed prolapse of pelvic organs. 11. Obesity: Body Mass Index (BMI) ≥ 30 kg/m². 12. Active Oncology Treatment: Any current or recent cancer treatments. 13. Pregnancy: Women who are pregnant. 14. Pelvic Floor Pathologies: Diagnosed pelvic floor dysfunctions. 15. Ongoing Pelvic Floor Treatment: Participants currently receiving active pelvic floor treatments.
- 16. Dermatological Pathologies: Any active vulvar dermatological conditions.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Effects of Mechanical Vibration Applied to the Pelvic Floor Musculature: A Quasi-Experimental Study
This quasi-experimental study aims to evaluate the effects of mechanical vibration applied to the pelvic floor musculature in healthy women aged 18-45. The intervention involves vibrational therapy targeting the central fibrous nucleus of the perineum, with the goal of assessing changes in muscle tone, strength, and biomechanical properties. The study will also examine the tolerance to this technique, with data collected at baseline and after 8 weeks of treatment.
Read the detailed description
his study investigates the effects of mechanical vibration applied to the pelvic floor musculature in healthy women aged 18 to 45 years. The intervention involves applying vibrational therapy to the central fibrous nucleus of the perineum, with the objective of assessing its impact on muscle tone, strength, and biomechanical properties such as rigidity, elasticity, and muscle stiffness. The study will also explore the tolerance of participants to this therapeutic technique.
The study follows a quasi-experimental design with a blinded evaluator. A total of 60 participants will be randomly assigned to one of four groups: three intervention groups receiving vibration at different frequencies (138 Hz, 41.5 Hz, and 24.9 Hz), and one control group receiving no intervention. The intervention will be administered twice a week for 8 weeks, with each session lasting 20 minutes.
Primary outcomes include changes in the tone and strength of the pelvic floor muscles, measured using various instruments such as the MyotonPro® for biomechanical parameters, the IEase XFT0010 for manometric measurements, and the Pelvimeter Phénix for dynamometry. Secondary outcomes include the evaluation of the vibration's impact on muscle elasticity, rigidity, and other biomechanical properties, as well as the participant's tolerance to the treatment.
The study is conducted in compliance with ethical principles set out in the Declaration of Helsinki, and participant data will be handled confidentially according to data protection regulations. The results of this research may contribute valuable insights into non-invasive treatments for pelvic floor dysfunctions, which are common in women and often impact their physical and mental well-being
- Conditions
- Healhty
- Being tested
- High frequency vibration group, Moderate frequency vibration group, Low frequency vibration group
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
High frequency vibration groupOther
- The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The primary aim is to evaluate the effects of high-frequency vibration on the tone, strength, and biomechanical properties of the pelvic floor muscles.
Moderate frequency vibration groupOther
Participants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 41.5 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The focus is to assess the effects of moderate-frequency vibration on the muscle tone, strength, and biomechanical parameters of the pelvic floor musculature
Low frequency vibration groupOther
Participants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 24.9 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The goal is to evaluate how low-frequency vibration impacts the pelvic floor muscle tone, strength, and biomechanical properties compared to the other groups.
| Study group | Role | What they receive |
|---|---|---|
| High frequency vibration group | Experimental | Participants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 138 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The primary aim is to evaluate the effects of high-frequency vibration on the tone, strength, and biomechanical properties of the pelvic floor muscles. Receives: Other: High frequency vibration group |
| Moderate frequency vibration group | Active comparator | Participants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 41.5 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The focus is to assess the effects of moderate-frequency vibration on the muscle tone, strength, and biomechanical parameters of the pelvic floor musculature Receives: Other: Low frequency vibration group |
| Low frequency vibration group | Experimental | Participants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 24.9 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The goal is to evaluate how low-frequency vibration impacts the pelvic floor muscle tone, strength, and biomechanical properties compared to the other groups. Receives: Other: Moderate frequency vibration group |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pelvic floor muscle tone
The tone of the pelvic floor muscles will be measured using the MyotonPro® device, which assesses the frequency of oscillation (Hz) of the muscle. The tone will be evaluated at baseline and post-intervention to determine any changes resulting from the vibrational therapy.
Measured: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
Secondary outcomes (4)
Pelvic floor muscle strength
Pelvic floor muscle strength will be assessed using two methods: Manometry (with the IEase XFT0010) to measure the pressure in mmHg during voluntary contraction, and Dynamometry (with the Pelvimeter Phénix) to measure force in Newtons (N) during vaginal contraction. These assessments will help evaluate changes in the muscle's ability to contract before and after the intervention.
Measured: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
Biomechanical properties of pelvic floor musculature
Biomechanical properties such as muscle rigidity (N/m), elasticity (logarithmic decrement), and fluency (number of Deborah) will be measured using the MyotonPro®. This will help evaluate changes in the muscle's stiffness and viscoelastic properties resulting from the vibrational therapy.
Measured: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment)
Pelvic floor dysfunction impact
The Pelvic Floor Distress Inventory (PFDI-20) questionnaire will be administered to measure the degree of pelvic floor dysfunction symptoms and their impact on the participant's daily life. This includes symptoms related to urinary incontinence, pelvic organ prolapse, and other pelvic health issues
Measured: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
Tolerance to the vibration therapy
Participants will be asked to rate their tolerance to the vibration therapy, including any discomfort or adverse effects experienced during the intervention. This will be recorded to assess the safety and acceptability of the treatment.
Measured: Throughout the intervention (ongoing during each session) and Post-intervention (after 8 weeks of treatment).
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Mar 2026
- Study start1 Jun 2026 (estimated)
- Primary completion1 Oct 2026 (estimated)
- Study completion1 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for HealhtyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Universidad Europea de Madrid
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Carlos Romero Morales, Universidad Europea de Madrid
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07494903
- Sponsor's protocol ID
- 26/138-IC_P_CE
- Status last verified
- Mar 2026
- First submitted
- 20 Mar 2026
- Last updated
- 27 Mar 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Lee J, Lee K, Song C. Determining the Posture and Vibration Frequency that Maximize Pelvic Floor Muscle Activity During Whole-Body Vibration. Med Sci Monit. 2016 Oct 27;22:4030-4036. doi: 10.12659/msm.898011.
PubMed 27787476Rodrigues MP, Paiva LL, Ramos JGL, Ferla L. Vibratory perineal stimulation for the treatment of female stress urinary incontinence: a systematic review. Int Urogynecol J. 2018 Apr;29(4):555-562. doi: 10.1007/s00192-017-3444-y. Epub 2017 Aug 15.
PubMed 28812109Barassi G, Bellomo RG, Frondaroli F, Frondaroli S, Santarelli A, Di Felice PA, Supplizi M, Palermo T, Saggini R. Integrated Rehabilitation Approach with Manual and Mechanic-Acoustic Vibration Therapies for Urinary Incontinence. Adv Exp Med Biol. 2019;1211:41-50. doi: 10.1007/5584_2019_436.
PubMed 31468357
Study at a glance
From the registry record, last updated by the sponsor on 27 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Mechanical Vibration Applied to the Pelvic Floor Musculature: A Quasi-Experimental Study
- ClinicalTrials.gov ID
- NCT07494903
- Acronym / sponsor ID
- 26/138-IC_P_CE
- Conditions
- Healhty
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Universidad Europea de MadridUniversity, hospital or other
- Study start
- 1 Jun 2026 (estimated)
- Primary completion
- 1 Oct 2026 (estimated)
- Study completion
- 1 Dec 2026 (estimated)
- First posted
- 27 Mar 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This quasi-experimental study aims to evaluate the effects of mechanical vibration applied to the pelvic floor musculature in healthy women aged 18-45. The intervention involves vibrational therapy targeting the central fibrous nucleus of the perineum, with the goal of assessing changes in muscle tone, strength, and biomechanical properties. The study will also examine the tolerance to this technique, with data collected at baseline and after 8 weeks of treatment.
Detailed description
his study investigates the effects of mechanical vibration applied to the pelvic floor musculature in healthy women aged 18 to 45 years. The intervention involves applying vibrational therapy to the central fibrous nucleus of the perineum, with the objective of assessing its impact on muscle tone, strength, and biomechanical properties such as rigidity, elasticity, and muscle stiffness. The study will also explore the tolerance of participants to this therapeutic technique.
The study follows a quasi-experimental design with a blinded evaluator. A total of 60 participants will be randomly assigned to one of four groups: three intervention groups receiving vibration at different frequencies (138 Hz, 41.5 Hz, and 24.9 Hz), and one control group receiving no intervention. The intervention will be administered twice a week for 8 weeks, with each session lasting 20 minutes.
Primary outcomes include changes in the tone and strength of the pelvic floor muscles, measured using various instruments such as the MyotonPro® for biomechanical parameters, the IEase XFT0010 for manometric measurements, and the Pelvimeter Phénix for dynamometry. Secondary outcomes include the evaluation of the vibration's impact on muscle elasticity, rigidity, and other biomechanical properties, as well as the participant's tolerance to the treatment.
The study is conducted in compliance with ethical principles set out in the Declaration of Helsinki, and participant data will be handled confidentially according to data protection regulations. The results of this research may contribute valuable insights into non-invasive treatments for pelvic floor dysfunctions, which are common in women and often impact their physical and mental well-being
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| High frequency vibration group | Experimental | Other: High frequency vibration groupParticipants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 138 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The primary aim is to evaluate the effects of high-frequency vibration on the tone, strength, and biomechanical properties of the pelvic floor muscles. |
| Moderate frequency vibration group | Active comparator | Other: Low frequency vibration groupParticipants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 41.5 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The focus is to assess the effects of moderate-frequency vibration on the muscle tone, strength, and biomechanical parameters of the pelvic floor musculature |
| Low frequency vibration group | Experimental | Other: Moderate frequency vibration groupParticipants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 24.9 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The goal is to evaluate how low-frequency vibration impacts the pelvic floor muscle tone, strength, and biomechanical properties compared to the other groups. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Throughout the intervention (ongoing during each session) and Post-intervention (after 8 weeks of treatment).
Key exclusion criteria (3 listed)
- 1. Urogenital Infections: Presence of any active urogenital infections. 2. Abdominal or Pelvic Surgery: History of abdominal or pelvic surgery. 3. Active Menstruation: Women who are menstruating at the time of the study. 4. Breastfeeding: Participants who are actively breastfeeding. 5. Mictrurition Symptoms: Presence of any urinary symptoms. 6. Pain: Pain upon palpation of the central fibrous nucleus of the perineum. 7. Sensory Alterations: Presence of altered sensitivity such as hypoalgesia, hyperalgesia, or allodynia.
- 8. Spinal Lesions: History of spinal cord injuries. 9. Neurological Conditions: Any neurological disorders. 10. Pelvic Organ Prolapse: Diagnosed prolapse of pelvic organs. 11. Obesity: Body Mass Index (BMI) ≥ 30 kg/m². 12. Active Oncology Treatment: Any current or recent cancer treatments. 13. Pregnancy: Women who are pregnant. 14. Pelvic Floor Pathologies: Diagnosed pelvic floor dysfunctions. 15. Ongoing Pelvic Floor Treatment: Participants currently receiving active pelvic floor treatments.
- 16. Dermatological Pathologies: Any active vulvar dermatological conditions.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| High frequency vibration groupz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The primary aim is to evaluate the effects of high-frequency vibration on the tone, strength, and biomechanical properties of the pelvic floor muscles. | Other | High frequency vibration group |
| Moderate frequency vibration groupParticipants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 41.5 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The focus is to assess the effects of moderate-frequency vibration on the muscle tone, strength, and biomechanical parameters of the pelvic floor musculature | Other | Low frequency vibration group |
| Low frequency vibration groupParticipants in this group will receive mechanical vibration applied to the central fibrous nucleus of the perineum at a frequency of 24.9 Hz. The treatment will be administered twice a week for 8 weeks, with each session lasting 20 minutes. The goal is to evaluate how low-frequency vibration impacts the pelvic floor muscle tone, strength, and biomechanical properties compared to the other groups. | Other | Moderate frequency vibration group |
Primary outcome
Pelvic floor muscle tone
Time frame: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
The tone of the pelvic floor muscles will be measured using the MyotonPro® device, which assesses the frequency of oscillation (Hz) of the muscle. The tone will be evaluated at baseline and post-intervention to determine any changes resulting from the vibrational therapy.
4 secondary outcomes
Pelvic floor muscle strength
Time frame: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
Biomechanical properties of pelvic floor musculature
Time frame: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment)
Pelvic floor dysfunction impact
Time frame: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).
Tolerance to the vibration therapy
Time frame: Throughout the intervention (ongoing during each session) and Post-intervention (after 8 weeks of treatment).
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Mar 2026.
- Results publication: PubMed 27787476Lee J, Lee K, Song C. Determining the Posture and Vibration Frequency that Maximize Pelvic Floor Muscle Activity During Whole-Body Vibration. Med Sci Monit. 2016 Oct 27;22:4030-4036. doi: 10.12659/msm.898011.
- Results publication: PubMed 28812109Rodrigues MP, Paiva LL, Ramos JGL, Ferla L. Vibratory perineal stimulation for the treatment of female stress urinary incontinence: a systematic review. Int Urogynecol J. 2018 Apr;29(4):555-562. doi: 10.1007/s00192-017-3444-y. Epub 2017 Aug 15.
- Results publication: PubMed 31468357Barassi G, Bellomo RG, Frondaroli F, Frondaroli S, Santarelli A, Di Felice PA, Supplizi M, Palermo T, Saggini R. Integrated Rehabilitation Approach with Manual and Mechanic-Acoustic Vibration Therapies for Urinary Incontinence. Adv Exp Med Biol. 2019;1211:41-50. doi: 10.1007/5584_2019_436.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Questions about this trial
What is this clinical trial studying?
A study testing High frequency vibration group, Moderate frequency vibration group and Low frequency vibration group in people with Healhty, run by Universidad Europea de Madrid.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 27 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Carlos Romero PhD, PhD (+34696879745, carlos.romero@universidadeuropea.es), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pelvic floor muscle tone (time frame: Baseline (before intervention) and Post-intervention (after 8 weeks of treatment).). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07494903, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Mar 2026.