Strength and endurance of the pelvic floor muscles in continent women: an observational study.
OBJECTIVE
To describe the maximal strength and endurance of the pelvic floor muscles in a cohort of women with no history of incontinence; and to determine the effect of age, parity, hormonal status, previous gynaecological surgery and regular performance of pelvic floor muscle exercises on the strength and endurance of these muscles.


METHODS
Preliminary cross-sectional observational study.


METHODS
Faculty of Health Sciences, University of Sydney, Australia.


METHODS
Twenty-eight women aged 19 to 58 years, 16 of whom were under 40 years of age. Participants were excluded if they had a history of incontinence or were currently menstruating.


METHODS
Pelvic floor muscle strength assessed using a perineometer, and pelvic floor muscle endurance above 60% of maximal voluntary contraction.


METHODS
The effect of age, parity, hormonal status, previous gynaecological surgery and regular performance of pelvic floor muscle exercises on the strength and endurance of these muscles.


RESULTS
Maximum strength of the pelvic floor muscles was not correlated with endurance (r=0.21, P=0.290) or age (r=-0.31, P=0.107); however, it was influenced by parity (r=-0.44, P=0.020). Endurance was significantly and positively correlated with age (r=0.38, P=0.048).


CONCLUSIONS
This study provides preliminary data that age and parity may be important factors in pelvic floor muscle performance in women who are continent. A larger study that considers the variability associated with these variables will provide useful guidelines for prescription of exercise.
Faculty of Health Sciences, University of Sydney, PO Box 170, Lidcombe, NSW 2141, Australia.
Emma
E
Quartly
Taryn
T
Hallam
Sharon
S
Kilbreath
Kathryn
K
Refshauge
D000009:Abdominal Muscles / Q000502:physiology*; D000328:Adult; D000367:Age Factors; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology*; D010298:Parity; D017773:Pelvic Floor / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology; D026741:Physical Therapy Modalities; D011247:Pregnancy; D012016:Reference Values; D014549:Urinary Incontinence / Q000503:physiopathology / Q000628:therapy; D014554:Urination / Q000502:physiology*; D055815:Young Adult