Scimago Lab
powered by Scopus
eISSN: 2325-4416
call: +1.631.470.9640
Mon-Fri 10 am - 2 pm EST




Investigation of Electromyographic Activity of Pelvic Floor Muscles in Different Body Positions to Prevent Urinary Incontinence

Kyeongjin Lee

Department of Physical Therapy, Kyungdong University, Wonju, Gangwon, South Korea

Med Sci Monit 2019; 25:9357-9363

DOI: 10.12659/MSM.920819

Available online:

Published: 2019-12-08

BACKGROUND: This study aimed to determine whether trunk stability muscles co-contract with body position as a factor of pelvic floor muscle (PFM) activity.
MATERIAL AND METHODS: Sixty-one healthy adults without pelvic floor dysfunction were examined for pelvic floor and trunk stability muscle activity in 4 body positions (ankle dorsiflexion and plantar flexion in standing position, and ankle dorsiflexion and plantar flexion in long sitting position). The activities of the PFMs via anal/vaginal probes, internal oblique (IO), multifidus (MF), tibialis anterior, and gastrocnemius muscles were measured by surface electromyography. Three-dimensional motion analysis measured the movement of the pelvis in real time according to the change in body position.
RESULTS: There was a significant increase in PFM activity from the ankle neutral position while standing for both ankle dorsiflexion and plantar flexion in standing position (p<0.05). In maximal contraction of PFM in the standing position, IO and MF were found to co-activate (p<0.05).
CONCLUSIONS: In standing position, the ankle dorsiflexion and plantar flexion positions activated PFMs, which was found to co-activate with trunk stability muscles. Pelvic floor training programs based on the results of this study may be helpful in patients with incontinence.

Keywords: Electromyography, Imaging, Three-Dimensional, Pelvic Floor, Posture, Urinary Incontinence