The Relationship Between Intra-Abdominal Pressure and Body Acceleration During Exercise

Area of Science:

• Biomechanics
• Women's Health
• Physiological Monitoring

Background:

• High intra-abdominal pressure (IAP) is linked to pelvic floor disorders.
• Intravaginal transducers for IAP measurement present compliance issues for long-term use.
• Waist-worn accelerometers are a potential non-invasive alternative for IAP estimation.

Purpose of the Study:

• To investigate the correlation between waist-worn accelerometer data and intra-abdominal pressure (IAP) measurements.
• To determine if accelerometers can reliably approximate mean maximal IAP and its area under the curve (AUC).

Main Methods:

• Twenty-five women performed 13 different activities.
• Intra-abdominal pressure (IAP) was measured using an intravaginal transducer.
• Acceleration was recorded using a waist-worn accelerometer.

Main Results:

• A strong positive correlation (R=0.7353) was found between accelerometer vector magnitude and mean maximal IAP during most activities.
• A moderate correlation (R=0.5059) existed between accelerometer data and IAP's AUC.
• Walking activities showed high correlation for mean maximal IAP (R=0.72208).

Conclusions:

• Waist-worn accelerometers offer a viable method for approximating mean maximal intra-abdominal pressure (IAP) in women during various activities.
• This technology may overcome limitations of current IAP measurement techniques for long-term studies.
• Further research can explore accelerometer use in understanding pelvic floor disorders.