Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Clinical Trial
. 2001 Aug;82(8):1081-8.
doi: 10.1053/apmr.2001.24297.

Contraction of the Pelvic Floor Muscles During Abdominal Maneuvers

Affiliations
Clinical Trial

Contraction of the Pelvic Floor Muscles During Abdominal Maneuvers

R R Sapsford et al. Arch Phys Med Rehabil. .

Abstract

Objective: To determine whether voluntary abdominal muscle contraction is associated with pelvic floor muscle activity.

Design: Pelvic floor muscle activity was recorded during contractions of the abdominal muscles at 3 different intensities in supine and standing positions.

Setting: Research laboratory.

Participants: Six women and 1 man with no histories of lower back pain.

Intervention: Not applicable.

Main outcome measures: Electromyographic activity of the pelvic floor muscles was recorded with surface electrodes inserted into the anus and vagina. These recordings were corroborated by measurements of anal and vaginal pressures. Gastric pressure was recorded in 2 subjects.

Results: Pelvic floor muscle electromyography increased with contraction of the abdominal muscles. With strong abdominal contraction, pelvic floor muscle activity did not differ from that recorded during a maximal pelvic floor muscle effort. The pressure recordings confirmed these data. The increase in pressure recorded in the anus and vagina preceded the pressure in the abdomen.

Conclusions: In healthy subjects, voluntary activity in the abdominal muscles results in increased pelvic floor muscle activity. The increase in pelvic floor pressure before the increase in the abdomen pressure indicates that this response is preprogrammed. Dysfunction of the pelvic floor muscles can result in urinary and fecal incontinence. Abdominal muscle training to rehabilitate those muscles may be useful in treating these conditions.

Similar articles

See all similar articles

Cited by 48 articles

See all "Cited by" articles

Publication types

LinkOut - more resources

Feedback