Association Between Excessive Weight Gain During Pregnancy and Persistent Low Back and Pelvic Pain After Delivery

Study Design. Retrospective study. Objective. To investigate the association between gestational weight gain (GWG) during pregnancy and persistent low back and pelvic pain (LBPP) after delivery. Summary of Background Data. Persistent LBPP after delivery is a risk factor for developing depression and chronic pain as well as incurring sick leave. Women experience weight gain during pregnancy. Excessive weight gain places a greater burden on the musculoskeletal system. However, little is known about how GWG is associated with LBPP after delivery. Methods. After Ethics Committee approval, we analyzed 330 women at 4 months after delivery who had LBPP during pregnancy. The exclusion criteria were as follows: specific low back pain, multiple birth, and incomplete data. Four months after delivery, LBPP was assessed using a self-report questionnaire. Persistent LBPP was defined as pain at 4 months after delivery with an onset during pregnancy or within 3 weeks after delivery. GWG was calculated as the difference between the pregnancy weight and the prepregnancy weight, which we categorized into three groups: <10, 10 to <15, and ≥15 kg. Other confounding factors including age, height, weight at 4 months after delivery, parity, gestational week, mode of delivery, weight of the fetus, and prepregnancy LBPP were assessed. We used logistic regression analysis to calculate LBPP odds ratios (ORs) according to GWG. Results. The prevalence of persistent LBPP was 34.1% (n = 113). Compared with women with a GWG of <10 kg, women with a GWG of ≥15 kg had a higher prevalence of persistent LBPP (OR = 2.77, 95% confidence interval (95% CI) = 1.28–5.96, adjusted OR = 2.35, 95% CI = 1.06–5.21); however, no significant difference was found for women with a GWG of 10 to <15 kg (OR = 1.18, 95% CI = 0.72–1.92, adjusted OR = 1.02, 95% CI = 0.61–1.72). Conclusions. Our study showed that excessive weight gain during pregnancy is one of the risk factors of persistent LBPP. Appropriate weight control during pregnancy could help prevent persistent LBPP after delivery. Level of Evidence: 3

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