An observational study in Pelvic Floor Dyssynergia and Phonation Disorder, sponsored by Cairo University. Not yet recruiting at 1 site in Egypt. Open to female participants aged 18 Years to 24 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-12-04.
Sponsored by Cairo University · Observational
The purpose of the study is to know if there is relation between the dynamics of pelvic floor muscles and different phonation pattern.
Some pelvic floor physical therapists are beginning to experiment with using phonation and vocalization cues to elicit different pelvic floor movements . However, there is a significant gap in the literature about the coordination and movement between the pelvic floor and glottis during speech and phonation, and there is an urgent need to identify the voices accompanied by increasing pelvic floor tone and integrating them into pelvic floor strengthening programs and voices accompanied by lowering pelvic floor tone and integrating them into pelvic floor down-training programs. To date, there has been only one study describing pelvic floor displacement during vocalization tasks. So this study aims to investigate pelvic floor muscle displacement during respiratory and phonatory tasks using trans-abdominal ultrasound to assess respiratory and phonatory tasks that can relax or enhance pelvic floor tone and be integrated into clinical practice.
132 studies on the registry are indexed under Dysphonia; 38 are open to participants now.
This study's planned enrollment of 20 is below the median of 123 across 40 observational studies indexed under Dysphonia.
Browse Dysphonia studies →Cairo University is the lead sponsor of 4,941 studies on the registry; 1,458 are open to participants now.
Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
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Twenty healthy female university students will participate in this study. They will be selected from faculty of physical therapy, Cairo University.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Professionally trained singers.
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Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
They will be selected from the faculty of physical therapy ,Cairo university
Other: phonation and respiratory tasks
Participants performed various tasks to evaluate pelvic floor muscle activity and displacement. These included a maximum voluntary contraction ("cutting off the flow of urine mid-stream"), a pelvic floor strain ("bearing down for a bowel movement"), and the Valsalva maneuver to clear the Eustachian tubes. Additionally, phonation and respiratory exercises were conducted, such as producing the "ah" sound at different pitches, open-mouth exhalation, coughing, and semi-occluded vocal tract (SOVT) exercises using a small coffee straw, commonly used in singing warm-ups to enhance vocal efficiency. Each task lasted 3 seconds, with 1-minute rest intervals to assess their impact on pelvic floor displacement
Assessment of pelvic floor muscle displacement
Pelvic floor displacement during phonation will be assessed using trans-abdominal ultrasound with a 3.5-MHz transducer. Posterior bladder wall displacement will be measured in the sagittal plane with standardized markers at rest and maximal distortion. A bladder filling protocol will ensure imaging clarity. Participants will perform pelvic floor tasks (e.g., contraction, strain, Valsalva) and phonation/respiratory exercises (e.g., "ah" sounds, coughing, SOVT exercises). Tasks will last 3 seconds, be repeated thrice, and baseline and end measurements will be recorded.
Time frame: 1 month
Voice pitch classification
the females' voice pitch will be classified by having them read "The North Wind and the Sun" three times consecutively in a quiet room, using a Samsung Note 20 mobile phone application for recording. The microphone is placed 30 centimeters from their mouths. The application measures average, median, highest (95th percentile), and lowest (95th percentile) frequencies in Hz to provide a comprehensive analysis of voice pitch and volume, aiding in assessing voice quality and potential disorders.
Time frame: 1 month
Start is estimated for Dec 2024; primary completion for Jan 2025, 1 month later.
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