Trampoline-Induced Changes in Pelvic Structure and Continence

Sponsor
University of Ottawa
Study ID
NCT07183800
Status
Recruiting
Apply to this trial

Conditions

  • Urinary Continence
  • Urinary Incontinence
  • Urinary Incontinence (UI)
  • Urinary Incontinence , Stress

Eligibility Criteria

Sex
FEMALE
Age
18 Years - 40 Years
Healthy Volunteers
Accepted

Interventions

  • Water — OTHER
    Participants will undergo a standardized 10-minute high-intensity trampoline jumping protocol designed to elicit mechanical loading on the pelvic floor. Prior to the jumping session, bladder volume will be assessed via transabdominal ultrasound. If a participant's bladder contains less than 100 mL of urine, they will be asked to drink water and wait until a target range of 100-200 mL is reached to ensure consistent pre-jump bladder filling across participants. This approach minimizes variability in bladder volume, which could influence pelvic floor measurements.

Study Details

The goal of this clinical trial is to evaluate whether a short bout of high-intensity trampoline jumping induces urinary leakage or measurable changes in pelvic floor morphology in active females aged 18-40 who do not report symptoms of urinary incontinence. The main questions it aims to answer are: Hypothesis 1: Does a single 10-minute trampoline protocol result in acute changes in pelvic floor structure, including bladder neck position, levator plate length, and/or posterior urethrovesical angle (PUVA)? Hypothesis 2: Do participants report any urinary leakage during the jumping protocol, despite being asymptomatic at baseline? Hypothesis 3: Do pelvic morphology changes recover within 30 minutes post-jumping, or do alterations persist? Researchers will perform within-subject comparisons at multiple time points (pre-jump, immediately post-jump, and 30 minutes post-jump) using transperineal ultrasound imaging to assess structural changes. Participants will: * Attend one laboratory visit * Complete baseline pelvic health questionnaires (ICIQ-UI Short Form and PFD Sentinel). * Undergo 2D transperineal ultrasound imaging in the standing position at rest, immediately post-jumping, and 30 minutes post-jumping. * Perform a 10-minute high-intensity jumping protocol on a mini-trampoline, while heart rate and perceived exertion are monitored. * Verbally report any urine leakage during jumping using standardized descriptors.

Key Dates

First listed
Sep 19, 2025
Start date
Jul 16, 2025
Status verified
Jul 2025
Primary completion
Dec 31, 2025
Completion
Apr 30, 2026

Study Design

Enrollment
30 participants (estimated)

Arms

  • Arm: healthy young active females
    18-40yo active females with no self-reported urinary incontinence

Primary Outcome Measure

Assessing whether a short-duration trampoline protocol induces urinary leakage in active females. [ Time Frame: Urinary leakage is assessed during the 10-minute jumping protocol on the single lab visit. ]

Related Studies