Intra-abdominal pressures during activity in women using an intra-vaginal pressure transducer

Shaw, Janet M.; Hamad, Nadia M.; Coleman, Tanner J.; Egger, Marlene J.; Hsu, Yvonne; Hitchcock, Robert W.; Nygaard, Ingrid

doi:10.1080/02640414.2014.889845

Cited by 63 publications

(59 citation statements)

References 21 publications

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“…Data from the WIVT was found to correlate well with the simultaneous measurement of a rectal balloon catheter for coughing and Valsalva maneuvers in a clinical laboratory setting [8]. Using the WIVT, we recently monitored IAP in 57 women during standardized exercise sessions to describe maximal IAP, area under the curve, and first moment of the area of IAP during 31 activities performed in an exercise science laboratory [9]. Although this study provided the basis for wirelessly monitoring IAP, the base station transceiver required a laptop limiting the range of activity to within a 5 meter radius.…”

Section: Introductionmentioning

confidence: 99%

Effects of walking speeds and carrying techniques on intra-abdominal pressure in women

et al. 2014

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Aims To test the feasibility of monitoring intra-abdominal pressure (IAP) outside the laboratory environment and to compare IAP while 1) carrying 13.6 kg (similar to a 3-month old in car seat) in 6 different ways while walking 100 meters; and 2) walking 400 meters at self-selected slow, normal, and fast pace. Methods Forty-six healthy women between 19 and 54 years completed the walking and lifting activities; the order for each was randomized. IAP was monitored with an intra-vaginal pressure transducer that wirelessly transmitted pressure data to a portable base station. We analyzed maximal peak IAP and area under the curve (AUC) IAP. Results Monitoring IAP outside of the laboratory was feasible. Mean maximal IAP during walking increased as pace increased; 42.5 (SD 10.2), 50.5 (10.9), and 62.0 (12.1) cm H2O for slow, medium, and fast speeds, respectively (p < 0.0001 by mixed model ANOVA). The corresponding AUC of IAP for walking decreased as pace increased. The ‘awkward carry’, ‘side carry’, and ‘front carry’ activities each resulted in higher mean maximal IAP (65.8 (10.6), 67.7 (12.8), 77.3 (13.1) cm H2O, respectively) than the ‘carry in backpack’ activity (55.5 (11.4) cm H2O; p < 0.0001). Conclusion Subtle variations in walking speed or method of carrying a toddler-size load can produce significant changes in IAP. Whether these increase the risk of pelvic floor disorders is not yet clear. However, these data suggest further inquiry into optimal methods and appliances to assist women in carrying may enable achieving a lower IAP profile.

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Section: Introductionmentioning

confidence: 99%

Effects of walking speeds and carrying techniques on intra-abdominal pressure in women

et al. 2014

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“…Using the average and standard deviation of sit-to-stand mean max values from a previous study [20], we determined that a discernible difference of 10 cm H 2 O could be detected in 20 people with 2-sided tests, assuming α = 0.05 and power of 80%.…”

Section: Methodsmentioning

confidence: 99%

“…Our group also recently recorded IAP in 57 women during a standard exercise session which included sit-to-stand activity and found that this produced a moderate increase in IAP with significant variability [20]. …”

Section: Introductionmentioning

confidence: 99%

Intra-abdominal pressure during Pilates: unlikely to cause pelvic floor harm

et al. 2015

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Aims To describe intra-abdominal pressures (IAP) generated during Pilates Mat and Reformer activities, and determine whether these activities generate IAP above a sit-to-stand threshold. Methods Twenty healthy women with no symptomatic vaginal bulge, median age 43 (range 22 – 59 years), completed Pilates Mat and Reformer exercise routines each consisting of 11 exercises. IAP was collected by an intra-vaginal pressure transducer, transmitted wirelessly to a base station, and analyzed for maximal and area under the curve (AUC) IAP. Results There were no statistically significant differences in mean max IAP between sit-to-stand and any of the Mat or Reformer exercises in the study population. Six to twenty-five percent of participants exceeded their individual mean max IAP sit-to-stand thresholds for 10 of the 22 exercises. When measuring AUC from 0 cm H2O, half the exercises exceeded the mean AUC of sit-to-stand but only Pilates Reformer and Mat roll-ups exceeded the mean AUC of sit-to-stand when calculated from a threshold of 40 cm H2O (consistent with, for example, walking). Conclusion Our results support recommending this series of introductory Pilates exercises including five Mat exercises and six Reformer exercises to women desiring a low IAP exercise routine. More research is needed to determine the long term effects of Pilates exercise on post-surgical exercise rehabilitation and pelvic floor health.

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“…According to Shaw et al [4], the intra-abdominal pressure rises with increasing intensity of the activity; for example, walking at an inclination of 7% results in an intra-abdominal pressure of 35 cm H 2 O compared with 66.5 cm H 2 O for running and 41.6 cm H 2 O for cycling. In this case, strenuous exercise can lead to overload and weakening of the pelvic floor muscles [3], as well as muscle fatigue immediately after the activity [6].…”

Section: Discussionmentioning

confidence: 99%

“…This fact might be explained by pelvic floor muscle weakness in situations of increased intra-abdominal pressure [3]. Furthermore, Shaw et al [4] reported a progressive increase in intra-abdominal pressure with more intense exercises. According to Da Roza [5], this type of exercise requires an increase in the contraction strength of the pelvic floor muscles to close the urogenital hiatus and to maintain urinary continence.…”

Section: Introductionmentioning

confidence: 99%

Acute effect of resistance exercise performed at different intensities on urine loss in older women

Menezes¹,

Virtuoso²,

Gurjão³

et al. 2018

Physiother Quart.

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Introduction. To evaluate the acute effect of resistance exercise performed at different intensities (moderate and vigorous) on urine loss in older women with mixed and stress urinary incontinence.Methods. The total of 16 older women with urinary incontinence underwent 2 sessions of resistance exercises involving different muscle groups. In a balanced crossover design, 1 of the 2 exercise intensities (12 or 6 repetitions maximum, RM) was applied in each session. The pad test was used to assess urine loss in the 2 sessions, with a weight increase of 2 g as the criterion. Differences in the pad test results between the sessions were compared with the use of the Wilcoxon test.Results. The mean pad weight was 0.69 ± 0.94 g at the intensity of 12RM and 0.50 ± 0.53 g at 6RM. In accordance with the cut-off adopted (2 g), only 2 of the 16 women lost urine. No significant difference in the pad test results (p = 0.975) was observed between the 2 resistance exercise intensities. Conclusions.Resistance exercise performed at different intensities (moderate and vigorous) did not cause urine loss in older women with urinary incontinence.

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Intra-abdominal pressures during activity in women using an intra-vaginal pressure transducer

Cited by 63 publications

References 21 publications

Effects of walking speeds and carrying techniques on intra-abdominal pressure in women

Effects of walking speeds and carrying techniques on intra-abdominal pressure in women

Intra-abdominal pressure during Pilates: unlikely to cause pelvic floor harm

Acute effect of resistance exercise performed at different intensities on urine loss in older women

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