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Aust J Physiother. 2006;52(3):219-22.

Sitting posture affects pelvic floor muscle activity in parous women: an observational study.

Author information

  • 1Department of Physiotherapy, Mater Misericordiae Hospital, Brisbane, QLD, Australia. rsapsford@ozemail.com.au

Abstract

QUESTION:

Do different sitting postures require different levels of pelvic floor and abdominal muscle activity in healthy women?

DESIGN:

Observational study.

PARTICIPANTS:

Eight parous women with no pelvic floor dysfunction.

OUTCOME MEASURES:

Bilateral activity of pelvic floor muscles (assessed vaginally) and two abdominal muscles, obliquus internus abdominis and obliquus externus abdominis, during three sitting postures.

RESULTS:

There was a significant increase in pelvic floor muscle activity from slump supported sitting (mean 7.2% maximal voluntary contraction, SD 4.8) to both upright unsupported sitting (mean 12.6% maximal voluntary contraction, SD 7.8) (p = 0.01) and very tall unsupported sitting (mean 24.3% maximal voluntary contraction, SD 14.2) (p = 0.004). Activity in both abdominal muscles also increased but did not reach statistical significance.

CONCLUSION:

Both unsupported sitting postures require greater pelvic floor muscle activity than the supported sitting posture.

PMID:
16942457
[PubMed - indexed for MEDLINE]
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