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KMID : 1812820200040010018
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Journal of Korean Dental Hygiene Science
2020 Volume.4 No. 1 p.18 ~ p.24
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Effects of Indirect Pelvic Floor Muscle Activation Exercise Using a Pressure Biofeedback Unit on Trunk Muscle Activity in Sitting Position
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Jung Eun-Joo
Oh Jae-Seop
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Abstract
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Background: Exercise for pelvic floor muscles (PFMs) is an effective intervention method to reduce urinary incontinence. The PFMs maintain trunk stability by improving intra-abdominal pressure by co-contracting with the transverse abdominis (TrA), multifidus (MF), and diaphragm muscles.
Purpose: This study investigated the effect of indirect PFMs activation using a pressure biofeedback unit (PBU) on trunk muscle activity in a sitting position.
Study design: Cross-sectional Study.
Methods: A total of 20 healthy female participants were recruited for this study. Surface electromyography (EMG) was used to measure TrA/internal abdominal oblique (IO), MF, external abdominal oblique (EO), and rectus abdominis (RA) activity during PFMs activation. EMG was used to measure trunk muscle activity under three conditions: before exercise, immediately after exercise, and after 10 min of exercise. The mean value of trunk muscle activity under each of three conditions was analyzed by a one-way repeated measures analysis of variance. A post hoc test was used to compare significant differences between each set of conditions.
Results: A significant increase in muscle activity (%maximal voluntary isometric contraction) of the TrA/IO, MF, EO, and RA was observed immediately after indirect PFMs activation exercise (p<0.01). After 10 min of PFMs activation, significant increases in TrA/IO and MF muscle activity was observed.
Conclusions: These results indicate that indirect PFMs activation in a sitting position using a PBU may be beneficial for increasing stabilization of the trunk and PFMs, specifically the TrA/IO muscles.
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KEYWORD
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Muscle activity, Pelvic floor muscle, Pressure biofeedback unit, Trunk muscle
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