The Effects of Age, Gender, and Parity on Rectoanal Functions in Adults
- 1 January 1990
- journal article
- research article
- Published by Informa UK Limited in Scandinavian Journal of Gastroenterology
- Vol. 25 (12), 1247-1256
- https://doi.org/10.3109/00365529008998561
Abstract
The effects of age. gender, and parity on rectoanal function were examined in a cross-sectional population study, including 68 normal subjects (32 men and 36 women) aged 23 to 91 years. Rectal volumetry was evaluated with graded isobaric rectal distension with 5–60 cm H2O in combination with anal manometry. Data were analysed by use of the multiple regression technique. Increasing age correlated with a decrease in rectal volume (r = -0.285, p < 0.05), resting anal pressure (r = -0.625, p < 0.001), and maximal squeezing pressure (r = -0.557, p < 0.001). The decrease in maximal squeeze pressure with age was similar in men and women (approximately = 1% x year−1), although the median of maximal squeeze pressure in women was 58.3–75.7% of that in men (p < 0.001). Nor was there a difference in resting anal pressure between men and women. An age-dependent increase was observed for the pressure threshold to produce an initial sensation of rectal filling and the rectoanal inhibition reflex (r = 0.446, p < 0.001). The sensory threshold increased with age, but this was more pronounced in women. No effect of parity on rectoanal function could be demonstrated. However, this would best be investigated in a longitudinal population study. We believe that identification of causes for interindividual variation and regression analysis procedures will increase the discriminative accuracy of analysis of rectoanal function. The present study shows that several of the demonstrated age-related changes have a tendency to expose elderly subjects, particularly women, to the problems of incontinence.Keywords
This publication has 21 references indexed in Scilit:
- Anorectal physiology measurement: Report of a working partyBritish Journal of Surgery, 1989
- Manovolumetry: a new method for investigation of anorectal function.Gut, 1988
- Effect of age, gender, and parity on anal canal pressuresDigestive Diseases and Sciences, 1987
- Effect of aging on anorectal function.Gut, 1987
- INJURY TO INNERVATION OF PELVIC FLOOR SPHINCTER MUSCULATURE IN CHILDBIRTHThe Lancet, 1984
- Anorectal Manometry in Healthy Elderly SubjectsJournal of the American Geriatrics Society, 1984
- Muscle strength and speed of movement in relation to age and muscle morphologyJournal of Applied Physiology, 1979
- Effect of muscle mass decrease on age-related BMR changesJournal of Applied Physiology, 1977
- The relation of sensation in the anal canal to the functional anal sphincter: a possible factor in anal continenceGut, 1963
- Physiological Aspects of Aging in ManAnnual Review of Physiology, 1961