Stania Magdalena, Chmielewska Daria, Kwaśna Krystyna, Smykla Agnieszka, Taradaj Jakub, Juras Grzegorz
Department of Physiotherapy Basics, Jerzy Kukuczka Academy of Physical Education, Mikołowska 72a, 40-065, Katowice, Poland.
Department of Human Motor Behavior, Jerzy Kukuczka Academy of Physical Education, Mikołowska 72a, 40-065, Katowice, Poland.
BMC Urol. 2015 Oct 24;15:107. doi: 10.1186/s12894-015-0103-9.
More and more frequently stress urinary incontinence affects young healthy women. Hence, early implementation of effective preventive strategies in nulliparous continent women is essential, including pelvic floor muscle training. An initial evaluation based on the bioelectrical activity of the pelvic floor muscles (PFM) during whole-body vibration (WBV) would help to devise the best individualized training for prevention of stress urinary incontinence in woman. We hypothesized that synchronous WBV enhances bioelectrical activity of the PFM which depends on vibration frequency and peak-to-peak vibration displacement.
The sample consisted of 36 nulliparous continent women randomly allocated to three comparative groups. Group I and II subjects participated in synchronous whole-body vibrations on a vibration platform; the frequency and peak-to-peak displacement of vibration were set individually for each group. Control participants performed exercises similar to those used in the study groups but without the concurrent application of vibrations. Pelvic floor surface electromyography (sEMG) activity was recorded using a vaginal probe during three experimental trials limited to 30s, 60s and 90 s. The mean amplitude and variability of the signal were normalized to the Maximal Voluntary Contraction - MVC.
Friedman's two-way ANOVA revealed a statistically significant difference in the mean normalized amplitudes (%MVC) of the sEMG signal from the PFM during 60s- and 90 s-trials between the group exposed to high-intensity WBV and control participants (p < 0.05). Longer trial duration was associated with a statistically significant decrease in the variability of sEMG signal amplitude in the study and control groups (p < 0.05).
Synchronous high-intensity WBV (40 Hz, 4 mm) of long duration (60s, 90 s) significantly enhances the activation of the PFM in young continent women. Prolonged maintenance of a static position significantly decreases the variability of sEMG signal amplitude independent of whole-body vibrations. Single whole-body vibrations in nulliparous continent women does not cause pelvic floor muscle fatigue.
The trial was registered in the Australian and New Zealand Clinical Trials Registry (no. ACTRN12615000966594); registration date: 15/09/2015.
压力性尿失禁越来越频繁地影响年轻健康女性。因此，在未生育的无尿失禁女性中尽早实施有效的预防策略至关重要，包括盆底肌肉训练。基于全身振动（WBV）期间盆底肌肉（PFM）的生物电活动进行初步评估，将有助于为预防女性压力性尿失禁设计出最佳的个性化训练方案。我们假设同步WBV可增强PFM的生物电活动，这取决于振动频率和峰-峰值振动位移。
样本包括36名未生育的无尿失禁女性，她们被随机分配到三个比较组。第一组和第二组的受试者在振动平台上进行同步全身振动；为每组分别设置振动频率和峰-峰值位移。对照组参与者进行与研究组类似的运动，但不同时施加振动。在三次持续30秒、60秒和90秒的实验中，使用阴道探头记录盆底表面肌电图（sEMG）活动。信号的平均幅度和变异性以最大自主收缩（MVC）进行标准化。
Friedman双向方差分析显示，在60秒和90秒的实验中，接受高强度WBV的组与对照组相比，来自PFM的sEMG信号的平均标准化幅度（%MVC）存在统计学显著差异（p<0.05）。试验持续时间延长与研究组和对照组中sEMG信号幅度变异性的统计学显著降低相关（p<0.05）。
长时间（60秒、90秒）的同步高强度WBV（40赫兹，4毫米）可显著增强年轻无尿失禁女性PFM的激活。长时间保持静态姿势可显著降低sEMG信号幅度的变异性，与全身振动无关。未生育的无尿失禁女性单次全身振动不会导致盆底肌肉疲劳。
该试验已在澳大利亚和新西兰临床试验注册中心注册（编号ACTRN12615000966594）；注册日期：2015年9月15日。
Zotero 插件
