The Effect of Pulling and Pushing Heavy Materials on The Dynamic of Lower Urinary Tract System Using Biomechanical and Urodynamical Simulation in Women Suffering Urinary Incontinence and Healthy Ones

Abstract

Urinary incontinence is a common condition in women. The aim of this clinical trial is to study the effect of lifting heavy weights on the dynamic of lower urinary tract system using bio-mechanical and urodynamical simulation in women suffering urinary incontinence and normal ones. Methods: A single center study in urodynamic center of Imam Reza Hospital, Tabriz, Iran was conducted enrolling 51 participants ranged 30 to 65 years. Simple randomization was used to select participants from the target sample of healthy and incontinent women. Blinding was not possible for patients and but the performer and assessor were blind to the history of underlying incontinence. Modeling of pulling and pushing heavy weights using a simulator device was used to understand the changes and involuntary leakage threshold with empty and full bladder. In all stages urodynamic system measured intra-abdominal pressure, intra-vesical pressure and pressure of detrusor with full and empty bladder with anal and vesical sensors. Maximum Voluntary Contraction (MVC) of participants with full or empty bladder was measured and leakage was observed and the threshold was recorded. Results: The mean age of 51 participants was 45.25±8 ranging from 30 to 65. The mean BMI (Body Mass Index) was 28.96±3.81. . Independent T-test showed a significant difference between patient and healthy group in both full and empty status of bladder in MVC, intra-abdominal, vesical and detrusor pressure. Paired T-test showed a significant difference between full and empty bladder in both group in all variables. Pearson test indicated, MVC was not correlated with cystometric factors. Correlation of MVC was significant in patient group in full bladder while pulling; with vesical pressure (p=0.005), abdominal pressure (p=0.031) and detrusor pressure (p=0.008). Correlation of vesical and abdominal pressure was significant in this group p˂0.0001) No leakage was observed during process.