Berube Marie-Eve, Niederauer Stefan, Graham Ryan, Hitchcock Robert, McLean Linda
School of Rehabilitation Sciences, University of Ottawa, 200 Lees Avenue E260C, Ottawa, ON, K1N 6N5, Canada.
Department of Bioengineering, University of Utah, Salt Lake City, UT, USA.
Int Urogynecol J. 2024 Nov;35(11):2211-2221. doi: 10.1007/s00192-024-05952-8. Epub 2024 Oct 23.
The aim was to investigate the feasibility of using an intravaginal intra-abdominal pressure (IAP) sensor worn by female runners during running to evaluate pelvic floor loading, and the association between IAP and running-induced stress urinary incontinence (RI-SUI).
Twenty-eight female runners participated in this cross-sectional study (15 with RI-SUI and 13 continent). Participants completed a 37-min treadmill running protocol instrumented with an intravaginal sensor measuring IAP, and a skin-mounted accelerometer measuring pelvic accelerations. Linear regression analyses evaluated the relationship between IAP and pelvic acceleration. One-way ANOVAs assessed the impact of running speed on IAP. Sensor dislodgement was recorded, and effect sizes (Cohen's d) were calculated for the comparison of IAP and accelerometry outcomes between runners with and without RI-SUI.
Intra-abdominal pressure showed high variance and the sensor was expelled in almost 15% of participants. Positive associations were found between pelvic acceleration and both absolute peak and normalized IAP but explained only between 12% and 18.6% of the variance in the models. Pelvic acceleration during running was not associated with cumulative IAP. Peak IAP significantly increased with running speed. Although IAP tended to be higher in runners with RI-SUI than in continent runners (Cohen's d between 0.14 and 0.74), pelvic accelerations tended to be lower (Cohen's d between 0.02 and 0.55).
There is high variance in IAP recorded during running using an intravaginal sensor. Faster speeds increase pelvic floor loading. Runners with RI-SUI may experience higher IAP than continent runners, warranting investigation. Recruitment should include a 15% data loss rate owing to sensor expulsion.
本研究旨在探讨女性跑步者在跑步过程中佩戴阴道内腹内压（IAP）传感器以评估盆底负荷的可行性，以及IAP与跑步引起的压力性尿失禁（RI-SUI）之间的关联。
28名女性跑步者参与了这项横断面研究（15名患有RI-SUI，13名无尿失禁）。参与者完成了一项37分钟的跑步机跑步方案，该方案配备了一个测量IAP的阴道内传感器和一个测量骨盆加速度的皮肤-mounted加速度计。线性回归分析评估了IAP与骨盆加速度之间的关系。单因素方差分析评估了跑步速度对IAP的影响。记录传感器移位情况，并计算效应量（Cohen's d）以比较有和没有RI-SUI的跑步者之间的IAP和加速度测量结果。
腹内压显示出高变异性，近15%的参与者传感器被排出。在骨盆加速度与绝对峰值IAP和标准化IAP之间发现了正相关，但在模型中仅解释了12%至18.6%的方差。跑步过程中的骨盆加速度与累积IAP无关。峰值IAP随跑步速度显著增加。尽管患有RI-SUI的跑步者的IAP往往高于无尿失禁的跑步者（Cohen's d在0.14至0.74之间），但骨盆加速度往往较低（Cohen's d在0.02至
