Moser Helene, Leitner Monika, Eichelberger Patric, Kuhn Annette, Baeyens Jean-Pierre, Radlinger Lorenz
Division of Physiotherapy, Department of Health Professions, Bern University of Applied Sciences, Stadtbachstrasse 64, 3008, Bern, Switzerland.
Faculty of Sport and Rehabilitation Sciences, Vrije Universiteit Brussel, Brussels, Belgium.
Arch Gynecol Obstet. 2018 Jun;297(6):1455-1463. doi: 10.1007/s00404-018-4734-4. Epub 2018 Mar 10.
Stress urinary incontinence (SUI) symptoms can be provoked during impact loads such as vertical jumps. To investigate and compare pelvic floor muscle (PFM) activity in women with SUI and continent women (CON) during drop jumps (DJ) and counter movement jumps (CMJ) could clarify the activity of the PFMs during impact loads.
A tripolar vaginal probe was used to record surface electromyographic (EMG) activity of the PFMs during DJ and CMJ. Time intervals of 30 ms were used to parameterize data from 30 ms before (pre-activity) to 150 ms after (reflex activity) ground contact on a force plate during the landing and take-off phase. EMG signals were normalized to the mean of the peak values of two maximal voluntary contractions (MVC) and expressed in percentage (% MVC).
For all time intervals during the landing and take-off phase, no statistically significant differences could be found between women with SUI and CON. EMG values exceeded 100% MVC for all time intervals during all landing and take-off phases. Maximal PFM activation was measured during the first landing of DJ and was 404.1% MVC for SUI and 370.2% MVC for CON.
Vertical jumps seem to stimulate pre-activity before and reflex activity after ground contact during the landing phase and activate PFMs up to 400% MVC. Jumping stimuli inducing involuntary PFM contraction could show a beneficial factor to be integrated in a PFM rehabilitation program.
压力性尿失禁（SUI）症状可在诸如垂直跳跃等冲击负荷期间诱发。研究并比较压力性尿失禁女性和控尿女性（CON）在下落跳（DJ）和反向运动跳（CMJ）期间盆底肌（PFM）的活动，可阐明冲击负荷期间盆底肌的活动情况。
使用三极阴道探头记录DJ和CMJ期间盆底肌的表面肌电图（EMG）活动。在力板上着陆和起飞阶段，以30毫秒的时间间隔对从地面接触前30毫秒（活动前）到地面接触后150毫秒（反射活动）的数据进行参数化。EMG信号归一化为两次最大自主收缩（MVC）峰值的平均值，并以百分比（%MVC）表示。
在着陆和起飞阶段的所有时间间隔内，SUI女性和CON女性之间未发现统计学上的显著差异。在所有着陆和起飞阶段的所有时间间隔内，EMG值均超过100%MVC。DJ首次着陆期间测量到最大盆底肌激活，SUI为404.1%MVC，CON为370.2%MVC。
垂直跳跃似乎在着陆阶段刺激着地面前的活动前状态和着地后的反射活动，并使盆底肌激活高达400%MVC。诱导盆底肌非自愿收缩的跳跃刺激可能是盆底肌康复计划中一个有益的因素。
