Pelvic floor muscle activity patterns in women with and without stress urinary incontinence while running / Irene Koening in Annals of physical and rehabilitation medicine, Vol. 63, n°6 (November 20)

Public ISBD [article]  inAnnals of physical and rehabilitation medicine > Vol. 63, n°6 (November 20) . - p. 495-499 Titre : Pelvic floor muscle activity patterns in women with and without stress urinary incontinence while running Type de document : texte imprimé Auteurs : Irene Koening ; Patric Eichelberger ; Monika Leitner ; Helene Moser ; Annette Kuhn ; Jan Taeymans ; Lorenz Radlinger Année de publication : 2020 Article en page(s) : p. 495-499 Note générale : doi.org/10.1016/j.rehab.2019.09.013 Langues : Anglais (eng) Mots-clés : Activation analysis  Electromyography  Wavelet analysis  Motor unit recruitment  Jogging Résumé : Background High-impact activities are often related to urine leakage in women, so deeper insight into continence mechanisms of pelvic floor muscles (PFMs) while running is needed. Therefore, simultaneous information about the intensity of PFM muscle activity and fibre recruitment behavior at each time point of the gait cycle can help in understanding PFM activity patterns. Objective We aimed to analyse spectral changes of the pre- and post-initial contact phase during running at 3 different speeds and to compare women with stress urinary continence (SUI) to those without SUI by using a wavelet approach. Methods PFM electromyography (EMG) was recorded during 7, 11 and 15 km/h treadmill running and analysed with Morse wavelets. The relative distribution of power was extracted during 6 time intervals of 30 ms, from 30 ms before to 150 ms after initial contact. Results We included 28 women without SUI (mean [SD] age 38.9 [10.3] years) and 21 with SUI (mean age 46.1 [9.9] years). The groups did not differ in power spectra for each time interval. However, we found significantly less EMG intensity in the lower frequency bands but more intensity in the higher frequency bands in the pre-initial contact phase than at post-initial contact. Conclusion Morse wavelets could be used to extract differences between pre- and post-initial contact activation behavior of PFMs during different running speeds as well as spectral changes toward high or low frequencies. This information sheds light on specific differences in involuntary reflexive activation patterns while running. Muscular preparation and adaptation a few milliseconds before initial contact could be helpful. Permalink : ./index.php?lvl=notice_display&id=91462 [article] Pelvic floor muscle activity patterns in women with and without stress urinary incontinence while running [texte imprimé] / Irene Koening ; Patric Eichelberger ; Monika Leitner ; Helene Moser ; Annette Kuhn ; Jan Taeymans ; Lorenz Radlinger . - 2020 . - p. 495-499. doi.org/10.1016/j.rehab.2019.09.013 Langues : Anglais (eng) in Annals of physical and rehabilitation medicine > Vol. 63, n°6 (November 20) . - p. 495-499 Mots-clés : Activation analysis  Electromyography  Wavelet analysis  Motor unit recruitment  Jogging Résumé : Background High-impact activities are often related to urine leakage in women, so deeper insight into continence mechanisms of pelvic floor muscles (PFMs) while running is needed. Therefore, simultaneous information about the intensity of PFM muscle activity and fibre recruitment behavior at each time point of the gait cycle can help in understanding PFM activity patterns. Objective We aimed to analyse spectral changes of the pre- and post-initial contact phase during running at 3 different speeds and to compare women with stress urinary continence (SUI) to those without SUI by using a wavelet approach. Methods PFM electromyography (EMG) was recorded during 7, 11 and 15 km/h treadmill running and analysed with Morse wavelets. The relative distribution of power was extracted during 6 time intervals of 30 ms, from 30 ms before to 150 ms after initial contact. Results We included 28 women without SUI (mean [SD] age 38.9 [10.3] years) and 21 with SUI (mean age 46.1 [9.9] years). The groups did not differ in power spectra for each time interval. However, we found significantly less EMG intensity in the lower frequency bands but more intensity in the higher frequency bands in the pre-initial contact phase than at post-initial contact. Conclusion Morse wavelets could be used to extract differences between pre- and post-initial contact activation behavior of PFMs during different running speeds as well as spectral changes toward high or low frequencies. This information sheds light on specific differences in involuntary reflexive activation patterns while running. Muscular preparation and adaptation a few milliseconds before initial contact could be helpful. Permalink : ./index.php?lvl=notice_display&id=91462

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Pelvic floor muscle reflex activity during coughing – an exploratory and reliability study / Helena Luginbuehl in Annals of physical and rehabilitation medicine, Vol. 59, n°5-6 (December 2016)

Public ISBD [article]  inAnnals of physical and rehabilitation medicine > Vol. 59, n°5-6 (December 2016) . - p. 302-307 Titre : Pelvic floor muscle reflex activity during coughing – an exploratory and reliability study Type de document : texte imprimé Auteurs : Helena Luginbuehl ; Jean-Pierre Baeyens ; Annette Kuhn ; [et al...] Année de publication : 2016 Article en page(s) : p. 302-307 Langues : Français (fre) Mots-clés : Cough  Cross-sectional study  Pelvic floor  Reproducibility  Stress urinary incontinence Résumé : Objectives Activities that provoke stress urinary incontinence (SUI) rapidly increase the intra-abdominal pressure and the impact loading on the pelvic floor muscles (PFMs). Coughing can cause urinary leakage and is often used to test SUI. However, PFM characteristics during coughing, including their reliability, have not been investigated. Here, we used electromyography (EMG) to describe PFM pre-activity and reflexivity during coughing and examined the reliability of the measurements. Methods This was an exploratory and reliability study including 11 young healthy women to characterize EMG reflex activity in PFMs during coughing. We describe 6 variables, averaged over 3 coughs per subject, and tested their reliability (intraclass correlation coefficient 3,1 [ICC(3,1)] and ICC(3,k), related standard error of measurement (SEM) and minimal difference [MD]). The variables represented the mean EMG activity for PFMs during 30-ms time intervals of pre-activity (initial time point of coughing [T0] and minus 30ms) and reflex activity (T0–30, 30–60, 60–90, 90–120 and 120–150ms after T0) of stretch-reflex latency responses. Results The mean %EMG (normalized to maximal voluntary PFM contraction) for EMG variables was 35.1 to 52.2 and was significantly higher during coughing than for PFM activity at rest (mean 24.9±3.7%EMG; P<0.05). ICC(3,k) ranged from 0.67 to 0.91 (SEM 6.1–13.3%EMG and MD 16.7–36.8%EMG) and was higher than ICC(3,1) (range 0.40–0.77; SEM 9.0–18.0%EMG, MD 24.9–50.0%EMG). Conclusions PFM activity during reflex latency response time intervals during coughing was significantly higher than at rest, which suggests PFM pre-activity and reflex activity during coughing. Although we standardized coughing, EMG variables for PFM activity showed poor reliability [good to excellent ICC(3,k) and fair to excellent ICC(3,1) but high SEM and MD]. Therefore, coughing is expected to be heterogeneous, with low reliability, in clinical test situations. Potential crosstalk from other muscles involved in coughing could limit the interpretation of our results. Permalink : ./index.php?lvl=notice_display&id=47163 [article] Pelvic floor muscle reflex activity during coughing – an exploratory and reliability study [texte imprimé] / Helena Luginbuehl ; Jean-Pierre Baeyens ; Annette Kuhn ; [et al...] . - 2016 . - p. 302-307. Langues : Français (fre) in Annals of physical and rehabilitation medicine > Vol. 59, n°5-6 (December 2016) . - p. 302-307 Mots-clés : Cough  Cross-sectional study  Pelvic floor  Reproducibility  Stress urinary incontinence Résumé : Objectives Activities that provoke stress urinary incontinence (SUI) rapidly increase the intra-abdominal pressure and the impact loading on the pelvic floor muscles (PFMs). Coughing can cause urinary leakage and is often used to test SUI. However, PFM characteristics during coughing, including their reliability, have not been investigated. Here, we used electromyography (EMG) to describe PFM pre-activity and reflexivity during coughing and examined the reliability of the measurements. Methods This was an exploratory and reliability study including 11 young healthy women to characterize EMG reflex activity in PFMs during coughing. We describe 6 variables, averaged over 3 coughs per subject, and tested their reliability (intraclass correlation coefficient 3,1 [ICC(3,1)] and ICC(3,k), related standard error of measurement (SEM) and minimal difference [MD]). The variables represented the mean EMG activity for PFMs during 30-ms time intervals of pre-activity (initial time point of coughing [T0] and minus 30ms) and reflex activity (T0–30, 30–60, 60–90, 90–120 and 120–150ms after T0) of stretch-reflex latency responses. Results The mean %EMG (normalized to maximal voluntary PFM contraction) for EMG variables was 35.1 to 52.2 and was significantly higher during coughing than for PFM activity at rest (mean 24.9±3.7%EMG; P<0.05). ICC(3,k) ranged from 0.67 to 0.91 (SEM 6.1–13.3%EMG and MD 16.7–36.8%EMG) and was higher than ICC(3,1) (range 0.40–0.77; SEM 9.0–18.0%EMG, MD 24.9–50.0%EMG). Conclusions PFM activity during reflex latency response time intervals during coughing was significantly higher than at rest, which suggests PFM pre-activity and reflex activity during coughing. Although we standardized coughing, EMG variables for PFM activity showed poor reliability [good to excellent ICC(3,k) and fair to excellent ICC(3,1) but high SEM and MD]. Therefore, coughing is expected to be heterogeneous, with low reliability, in clinical test situations. Potential crosstalk from other muscles involved in coughing could limit the interpretation of our results. Permalink : ./index.php?lvl=notice_display&id=47163

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