Recovery of Abdominal Muscle Thickness and Contractile Function in Women after Childbirth

Incidence of groin hernia repairs in women and parity: a population-based cohort study among women born in Sweden between 1956 and 1983

INTRODUCTION

The aim of this study was to evaluate the association between parity and the incidence rate of groin hernia repair in women.

METHOD

This study was based on two Swedish national registers, the Medical Birth Register (MBR), and the Swedish Hernia Register (SHR). The cohort constituted of women born between 1956 and 1983. Data on vaginal and cesarean deliveries were retrieved from the MBR. The birth and hernia registers were cross matched to identify hernia repairs carried out after deliveries.

RESULTS

A total of 1,535,379 women were born between 1956 and 1983. Among these, 1,417,237 (92.3%) were registered for at least one birth. The incidence rate for Inguinal Hernia Repair (IHR) and Femoral Hernia Repair (FHR) was 10.7 per 100,000 person-year and 2.6 per 100,000 person-year, respectively. Compared with women registered for one delivery, the incidence rate ratio for IHR was 1.31 (95% Confidence Interval: 1.23-1.40) among women registered for two deliveries, 1.70 (1.58-1.82) among women registered for ≥ 3 deliveries. Additionally, the incidence rate ratios were higher 1.30 (1.14-1.49) and 1.70 (1.49-1.95) for FHR among women with two and  ≥ 3 registered deliveries, respectively.

CONCLUSION

In the present cohort, higher parity was associated with a higher incidence of inguinal as well as FHRs.

Retroperitoneal leakage as an important cause of acquired ultrafiltration decline in peritoneal dialysis: clinical characteristics and related risk factors

BACKGROUND

Peritoneal dialysis (PD) is a widely-used renal replacement therapy while low ultrafiltration volume usually results in technique failure. Retroperitoneal leakage has been reported to be one of the causes of acquired decline in ultrafiltration. The present study investigated retroperitoneal leakage in PD patients and explored related risk factors.

METHODS

This study was designed as a prospective, observational study. A total of 420 PD patients regularly followed up at our center were enrolled from May 2011 to July 2021 and followed until December 2021. Retroperitoneal leakage was determined by magnetic resonance peritoneography and was used as the endpoint. Patients with retroperitoneal leakage were given intermittent PD or temporary hemodialysis (HD) as therapy. Cox regression models were used to identify risk factors for retroperitoneal leakage.

RESULTS

The cohort was followed up for up to 125.0 months (median: 46.4 months; interquartile range: 16.6 months). During the follow-up, 68 patients developed retroperitoneal leakage, with 31 (45.6%) cases occurring within the first year after PD initiation. A total of 62 (91.2%) patients recovered from retroperitoneal leakage and resumed their original PD regimen. Multivariate Cox regression analysis revealed that age and gender were independent predictors for retroperitoneal leakage. Younger males were more likely to develop retroperitoneal leakage. In females, waistline and body mass index (BMI) were found to be risk factors for retroperitoneal leakage.

CONCLUSIONS

Retroperitoneal leakage was common in PD patients with ultrafiltration insufficiency and was usually reversible after appropriate treatment. Age and gender were independent risk factors for retroperitoneal leakage.

Significance of Physical Exercise in Pregnancy: Comparison of Short and Long Exercise Programs

BACKGROUND

Several musculoskeletal changes occur in pregnancy, particularly in the abdominal region. The aim of this study was to search and compare the effects of long (LEP) and short exercise programs (SEP) in terms of the satisfaction of the needs of pregnant women.

METHODS

This study consisted of 2 groups: LEP (n=16) and SEP (n=16). Muscle thickness measurements determined by ultrasound, the 6 minute walk test, Pregnancy Physical Activity Questionnaire, Visual Analogue Scale, Oswestry Disability Index, and Short Form-36 Quality of Life Questionnaire were the study variables. Evaluations were done at the 16th (baseline), 24th, and 32nd gestational weeks. The LEP consisted of 20 and the SEP consisted of 9 exercises, which were applied for 16 weeks until the 32nd gestational week.

RESULTS

Emotional role limitation and pain scores of quality of life, 6 minute walk test, and occupational physical activity were found to be better in the LEP group at the 24th gestational week (p=0.043, p=0.049, p=0.049, p=0.026). At the 32nd gestational week, the 6 minute walk test and occupational physical activity were found to be higher in the LEP group (p=0.006, p=0.017). Additionally, rectus abdominis and bilateral diaphragm muscle thicknesses, "moderate intensity and sports physical activity" and "vitality and emotional well-being" were increased over time with the LEP (p+<+0.05 for all). On the other hand, unilateral diaphragm muscle thickness, sports physical activity level, and vitality were improved with the SEP (p+<+0.05 for all).

CONCLUSIONS

The SEP and LEP both have beneficial effects in pregnant women. However, the LEP increases physical activity level, functional capacity, and quality of life more than the SEP during the later stages of pregnancy.

Effects of abdominal girdle belt on pulmonary function variables of postpartum women in Enugu, Nigeria: a quasi-experimental study

This quasi-experimental study was aimed at investigating the effects of wearing an abdominal girdle belt on pulmonary function variables of postpartum women. 40 consenting postpartum women aged between 18 and 35 years were recruited from a post-natal clinic in Enugu, Nigeria. The participants were conveniently assigned into girdle belt and control groups (20 each). Their lung function (forced expiratory volume in first second[FEV₁], and %FEV₁, forced vital capacity[FVC], peak expiratory flow [PEF], forced expiratory flows [25^th, 75^th & 25-75^th percentiles]) values were measured prior to and after eight weeks of the study intervention period for each participant. Data obtained were analysed using descriptive and inferential statistics. Following the intervention period, 19 and 13 participants completed the study in the girdle belt and control groups, respectively. The main results showed that both groups were comparable at baseline for all the study variables assessed (p > 0.05). Following the intervention period, only the PEF was significantly reduced in the girdle belt group compared to control group participants (p = 0.012). Thus, wearing girdle belts for an extended period of time has no effect on the lung function values of postpartum women.IMPACT STATEMENTWhat is already known on the subject? Postpartum abdominal girdle belts are commonly utilised for resolution of abdominal protrusion and obesity after childbirth. Unfortunately, several adverse effects, including bleeding, compressive pain and discomfort and abnormally increased intra-abdominal pressure, have been associated with this practice. Consistent increase in intra-abdominal pressure of variable duration has been reported to affect pulmonary functions.What do the results of this study add? The study findings indicate that wearing girdle belts for eight weeks by postpartum women has no substantial effect on the pulmonary function variables.What are the implications of these findings for clinical practice and/or further research? Utilisation of abdominal girdle belts of equal or less than 8 weeks duration should not be discouraged for post-partum women due to fear of its potential negative impact on pulmonary function.

Effects of Pilates on inter-recti distance, thickness of rectus abdominis, waist circumference and abdominal muscle endurance in primiparous women

BACKGROUND

Pilates is expected to have a positive effect on women with weakened abdominal muscles after childbirth. Pilates may have a beneficial effect on the structure and function of the abdominal muscles in pregnant women. Therefore, the objective of this study was to investigate the effects of Pilates on inter-recti distance, thickness of the rectus abdominis, waist circumference, and abdominal muscle endurance in primiparous women.

METHODS

Thirty-five primiparous postpartum women were assigned to either the Pilates exercise group (n = 20) or the control group (n = 15). Pilates was undertaken by the exercise group for 50 min/day, 5 days/week, for 4 weeks. The control group maintained their daily activities without any intervention. The inter-recti distance was measured at three locations along the linea alba, and the thickness of the rectus abdominis was measured using ultrasound. Abdominal muscle endurance was measured using a repeated 1-min curl-up test. Waist circumference was also measured.

RESULTS

The exercise group showed significant improvements from baseline in inter-recti distance, waist circumference, and abdominal muscle endurance (p < 0.05). The control group showed no significant improvement in these variables. Compared with the control group, the exercise group showed significantly improved performance in terms of inter-recti distance, waist circumference, and abdominal muscle endurance (p < 0.05).

CONCLUSIONS

The results of this study demonstrate that Pilates was effective in reducing inter-recti distance and waist circumference and improving abdominal muscle endurance in primiparous postpartum women. Pilates is considered an effective exercise for improving muscle structure and function in primiparous postpartum women, helping in the recovery from, and preventing, diastasis rectus abdominis.

Is Diastasis Recti Abdominis Associated With Low Back Pain? A Systematic Review

BACKGROUND

Low back pain (LBP) is a common cause of disability worldwide; multiple causes and risk factors have been proposed in the genesis of back pain. Some studies reported an association between diastasis recti abdominis (DRA), a surrogate for decreased core strength muscle, and low back pain. We aimed to investigate the relationship between DRA and LBP through a systematic review.

METHODS

A systematic review of the literature of clinical studies in English literature was conducted. PubMed, Cochrane, and Embase databases were used to conduct the search up to January 2022. The strategy included the following keywords: "Lower Back Pain" AND "Diastasis Recti" OR "Rectus abdominis" OR "abdominal wall" OR "paraspinal musculature".

RESULTS

From 207 records initially found, 34 were suitable for full review. Thirteen studies were finally included in this review, with a total of 2,820 patients. Five studies found a positive association between DRA and LBP (5 of 13 = 38.5%) whereas 8 studies did not find any association between DRA and LBP (8 of 13 = 61.5%).

CONCLUSIONS

Of the studies included in this systematic review, 61.5% did not find an association between DRA and LBP whereas a positive correlation was observed in 38.5% of studies included. Based on the quality of the studies included in our review, better studies are warranted to understand the association between DRA and LBP.

Respiratory physiology in pregnancy and assessment of pulmonary function

A progressive chest wall adaptation occurs during pregnancy driven by the hormones and the expanding uterus. The effect of the former is more prevalent in the first weeks of pregnancy, while the latter is more evident in the last trimester. The combination of the hormonal-induced joint loosening together with the progressively enlarging uterus produces changes in the whole chest wall geometry, with the thoracic alterations being the most fundamental. The ribcage changes in size, but not in volume, secondary to an upward bucket handle shift centred in the xiphoidal process so that the lung is not restricted. A virtuous cycle of stretching and muscle conditioning seems to be established between the enlarging uterus, the diaphragm, and the abdominal muscles to prepare these muscles for the expulsive phase. From the respiratory point of view, the supine position seems to hinder the action of the abdominal muscles during forced expiration at the end of pregnancy.

Effectiveness of Yoga on the Interrectus Distance in Early Postpartum Women: A High-Frequency Ultrasound Study

To investigate the effects of ultrasonic evaluation of a progressive yoga exercise program on reducing the inter-recti distance (IRD) among women in the early postpartum period. Postpartum women (n = 116), free of obstetric complications and in recovery following vaginal delivery between weeks 1 and 12, were recruited. Participants were randomly assigned to the control and yoga exercise group in the pre- and post-intervention design. The control group received no treatment, while the yoga exercise group participated in a guided 12-week progressive yoga exercise program started at postpartum week 1. The IRD was examined using high-frequency ultrasound at postpartum weeks 6 and 12. The results showed that the supraumbilical, umbilical, and subumbilical IRD were significantly decreased in the yoga exercise group after the 12-week progressive yoga exercise intervention compared with the first (week 6) and second (week 12) measurements. The differences in IRD at supraumbilical, umbilical, and subumbilical intervals between weeks 6 and 12 significantly increased in the yoga exercise group. Progressive yoga exercises are effective program that reduce IRD among women in the early postpartum period through ultrasound evaluation. In conclusion, women should advocate combined yoga exercise in the early postpartum days following a supervised program.

Progressive Changes in Lumbopelvic Alignment during the Three Month-Postpartum Recovery Period

Pregnancy-related lumbopelvic pain is a common musculoskeletal problem, and postural changes are believed to be involved in these disorders. However, the lumbopelvic alignment changes in postpartum women remain unclear. This study aimed to determine whether there are changes in lumbopelvic alignment following vaginal or cesarean delivery and when these alignment changes occur after delivery. Thirty postpartum females (PP group) and 20 nulliparous female controls (CTL group) underwent anteroposterior, lateral pelvic, and lower-back X-ray in a static upright position. Digital radiographic images were analyzed and three radiographic variables, the pelvic incidence, pubic symphysis width, and sacral slope, were measured. The pubic symphysis width of the PP group was significantly larger immediately and one month after childbirth (PP group: 6.0 ± 1.1 mm (immediately), 5.0 ± 1.2 mm (one month); CTL group: 3.4 ± 0.4 mm; F = 31.79, p < 0.001). The sacrum slope in the PP group was significantly larger than in the CTL group 1 month after childbirth (PP group: 39.9 ± 6.6°; CTL group: 32.8 ± 5.1°; F = 2.59, p = 0.05). A two-way analysis of variance indicated no statistically significant main effects or interaction effects between the delivery modes on the pubic symphysis width or the sacrum slope. This study suggested that the course of lumbopelvic alignment progressed towards recovery for at least one month, and that these changes were independent of the delivery method.

Differences in Inter-Rectus Distance and Abdominopelvic Function between Nulliparous, Primiparous and Multiparous Women

Widening of the inter-rectus distance (IRD) is highly prevalent among postpartum women and can lead to dysfunction of abdominopelvic muscles. The aim of this study was to evaluate the differences in IRD and abdominopelvic function between nulliparous, primiparous and multiparous women. A cross-sectional study was conducted on 75 women (25 nulliparous, 25 primiparous and 25 multiparous at 6 months postpartum). The participants underwent ultrasound assessment under three conditions (at rest, abdominal draw-in maneuver (ADIM) and curl-up) at two locations (2 cm above and 2 cm below the umbilicus). Furthermore, abdominopelvic muscle function was determined by prone, supine and side bridge tests. In all conditions and locations, the IRD were significantly higher (p < 0.05) in the primiparous and multiparous women than in the nulliparous. The multiparous women presented greater (p > 0.05) IRD at rest and during ADIM compared to the primiparous women. Regarding abdominopelvic muscle function, differences were only significant (p < 0.05) between the nulliparous with primiparous women in prone and supine conditions. These findings suggest that parity influences IRD: women at 6 months postpartum present greater IRD compared to nulliparous women; multiparous women present greater IRD at rest and during the activation of deep abdominal muscles than primiparous women; and primiparous women exhibit worse abdominopelvic muscle function than nulliparous women.