During two standardized physical activity sessions, use intra-abdominal pressure data (such as mean peak pressure and total area under the pressure curve) generated by the wireless remote abdominal pressure system to
- describe intra-abdominal pressures during a wide variety of activities
- determine the reproducibility of intra-abdominal pressures during individual activity segments measured during the two sessions
- categorize data generated in Aim 2a to revise the current Strenuous Activity Index (initially developed by the investigators based on urodynamics laboratory measurements) to create a valid instrument that reflects distinct magnitudes of intra-abdominal pressure in women during leisure, household and occupational activities.
We also plan to better understand how intra-abdominal pressure data relate to other common measures of physical activity intensity. Therefore, we also plan to describe the heart rate and perceived exertion responses to a wide variety of activities concomitantly with abdominal pressure measurement.
PEP Substudy Objectives:
PEP Aim 1: to describe intraabdominal pressures (IAP) experienced by women during their daily lives, including recreation and simulated household and childcare lifting and carrying activities.
PEP Aim 2: to determine whether IAP is associated with walking speed, after adjusting for body mass index.
PEP Aim 3: to compare IAP during common lifting and carrying activities in which the same weight is held in different ways (consistent with how people lift and carry objects).
Home Activity Substudy objectives:
1. To evaluate feasibility, comfort, and ease of use of the transducer and base station, as well as the quality of data collection to measure intra-abdominal pressure during daily activity over a 4-day period.
2. Collect pilot data to determine the feasibility of using a wrist worn accelerometer to predict a woman’s intra-abdominal pressure (IAP) profile.
The goal of this research is to track intra-abdominal pressures (IAP) using a wireless remote abdominal pressure sensor that fits in the vagina of women performing various activities of daily living. We have previously tracked IAP in 60 women undergoing 41 activities such as running, stepping, lifting and jumping. During those trials a wireless intra-abdominal pressure sensor was monitored using a remote base station linked to a laptop computer. The data recorded by the base station was read and stored on the laptop for analysis. Since the conclusion of the previous study, development work progressed on the development of a remote base station. This remote base station performs all the tasks as the previous base station except that it stores pressure data in an on-board memory card. The PEP substudy (already approved) utilizes this newly formed base station to complete extended activity tasks outside a controlled laboratory environment.
The ‘Pilates Sub-Study’ will monitor intra-abdominal pressure of 20 women (age 18 to 60) undergoing Pilates exercises in a class format not exceeding 5 participants at a time. The woman will insert the sensor into the vagina. A portable base station will be clipped to their pants to allow for free movement and wireless reliability. The participants will be guided through a 30 minute Pilates mat routine designed to incorporate smooth transition of the participants between poses and to closely simulate a typical Pilates mat class. After the exercise routine has been concluded the same participants will then be lead through 30 minutes Pilates reformer routine. We would like to video record the participants undergoing the procedure in order to better match intra-abdominal pressure data with movement. We will collect no PHI other than the person’s name on the consent document.
Strenuous Activity Sub-Study
The strenuous activity sub-study will monitor intra-abdominal pressure of up to 20women (age 18 to 54) during strenuous physical activity.
Pressure Accelerometer Correlation (PAC) Sub-Study
To determine the relationship between mean accelerometer vector magnitudes and mean maximum intra-abdominal pressure.