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. 2021 Aug 6;25(4):883–890. doi: 10.1007/s10029-021-02468-8

Table 1.

List of paper evaluated

Author (year of the pubblication) Type of study Population Type DRA definition DRA evaluation Prevalence of DRA Risk factor evaluated for DRA Results
N Age
Mota et al. (2015) [11] Longitudinal observational study 84 32.1 ± 2.2 Primamaparus, at gestetional week 35, 6–8, 12–14 and 24–26 weeks PP IRD > 16 mm By US, 2 cm below the umbelicus

100% at gestetional week 35 52.4% at 6–8 week PP

53.6% at 12–14 weeks PP

39.3% at 6 months PP

Age, BMI before pregnancy BMI at 6 months post partum, weight gain during pregnancy, baby weight birth, abdominal circumference in late pregnancy, hypermobility, vaginal birth, regular exercise training No risk factor for DRA at 6 months post-partum
Sperstad et al. (2016) [6] Longitudinal observational study 117 28.7 ± 4.3 Nulliparous European women from 21 weeks gestation to 12 months PP IRD > 2 fingerbreadths or observed protrusion along the linea alba By palpation 4.5 cm above, at and 4.5 cm below the umbilicus in crunch position

33.1% at gestation week 21, 60% at 6 weeks PP

45.5% at 6 months PP

32.6% at 12 month PP

Age, height, mean weight before pregnancy, weight gain during pregnancy, delivery mode, baby’s birth weight, benign joint hypermobility syndrome, heavy lifting, level of abdominal and pelvic floor muscle exercise training 12 months PP, general exercise training 12 months PP No risk factor for DRA at 12 months post partum
Spitznagle et al.(2007) [8] Retrospective study 547 52.45 ± 16.65 Women presenting to urogynecological medical practice A separation in rectus abdominis muscle By palpation, 1in.above or below the umbilicus in stress position 52%, 35% in nulliparus Age, race, parity, gravity, delivery type, menoapusal hormone replacement therapy, previous surgery Risk factor for DRA: age, parity, gravity, caucasian or asian race, menopausal hormaone replacement therapy, previous abdominal surgery
Turan et al. (2011) [13] Observative study 95 22.04 ± 1.29 Nulliparus, primiparou and multiparous IRD > 2 cm By palpation, 3–4 cm above the umbilicus 0% in nulliparous, 2% in primiparous 59% in pluriparous Parity type of delivery Risk factor for DRA: parity, delivery type for those that gave birth twice
Wu (2020) [14] Observative study 644 58 Women who had received a CT scan < 45 years: IRD > 1.0 cm above the umbilicus, 2.7 cm at the periumbilicus, 0.9 cm below the umbilicus  > 45 years: IRD > 1.5 cm above the umbilicus, 2.7 cm at the umbilicus, 1.4 cm below the umbilicus By CT 28.40% Age, BMI, chronich cough, chronic constipation, diabetes, parity Risk factor for DRA: BMI, diabetes, parity
McPhail [16] Observative study 42

73.2 in AAA group

70.8 in PAD group

Men referring to a vascular practice for AAA or PAD A visible midline bulge through the linea above the umbilicus in stress position Phisical examination

66.7% in AAA group

16.7% in PAD group

NA Prevalence of DRA is different between the two group
Gitta et al. [32] Article in Hungarian
Rett et al. [33] Article in Portuguese
Wang et al. [35] Full text NA
Candido et al. [34] Full text NA
Champion [37] Full text NA
Doubkova [36] Full text NA
Zhou [38] Full text NA

IRD inter recti distance, DRA diastasis rectus abdominis, NA not available, AAA abdominal aortuc aneu;rysm, PAD peripheral arterial occlusive disease, BMI body mass index, CT computer tomography, US ultrasound, PP post partum