The effects of yoga in prevention of pregnancy complications in high-risk pregnancies: A randomized controlled trial
SVYASA University, Department of Life Sciences, Bengaluru, India. Electronic address: . Preventive Medicine
(Impact Factor: 3.09).
08/2012; 55(4):333-40. DOI: 10.1016/j.ypmed.2012.07.020
While previous studies have shown the potential effects of yoga in normal pregnancies, this randomized controlled trial investigated the effects of yoga in prevention of pregnancy complications in high-risk pregnancies for the first time.
68 high-risk pregnant women were recruited from two maternity hospitals in Bengaluru, India and were randomized into yoga and control groups. The yoga group (n=30) received standard care plus one-hour yoga sessions, three times a week, from the 12th to the 28th week of gestation. The control group (n=38) received standard care plus conventional antenatal exercises (walking) during the same period.
Significantly fewer pregnancy induced hypertension (PIH), preeclampsia, gestational diabetes (GDM) and intrauterine growth restriction (IUGR) cases were observed in the yoga group (p=0.018, 0.042, 0.049, 0.05 respectively). Significantly fewer Small for Gestational Age (SGA) babies and newborns with low APGAR scores (p=0.006) were born in the yoga group (p=0.033).
This first randomized study of yoga in high-risk pregnancy has shown that yoga can potentially be an effective therapy in reducing hypertensive related complications of pregnancy and improving fetal outcomes. Additional data is needed to confirm these results and better explain the mechanism of action of yoga in this important area.
Available from: Ilona S Yim
- "Evidence from non-randomized trials suggests that yoga practice is associated with reduced risk of low birth weight and preterm labor . Randomized controlled trials further suggest that perinatal anxiety  , perceived stress , psychological health , and autonomic nervous system responses to stress  can be improved and the incidence of pregnancy-related hypertension alleviated  with yoga. Furthermore, there is preliminary Contents lists available at ScienceDirect "
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ABSTRACT: Perinatal depression impacts maternal and child health, and little is known about effective interventions. The effects of prenatal Hatha yoga on cortisol, affect and depressive symptoms were investigated in 51 women. Twice during pregnancy, yoga group participants reported on affect and provided a saliva sample before and after a 90-min prenatal Hatha yoga session. Corresponding measures were obtained from yoga and control group participants on days of usual activity. Depressive symptoms were assessed in pregnancy and post partum. Cortisol was lower (p < .01) and positive affect higher (p < .001) on yoga compared to usual activity days. Negative affect and contentment (p < .05) improved more in response to the yoga session. Yoga group participants showed fewer postpartum (p < .05) but not antepartum depressive symptoms than control group participants. Findings indicate that prenatal Hatha yoga may improve current mood and may be effective in reducing postpartum depressive symptoms.
Available from: Martha Lappas
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ABSTRACT: Normal human pregnancy is considered a state of enhanced oxidative stress. In pregnancy, it plays important roles in embryo development, implantation, placental development and function, fetal development, and labor. However, pathologic pregnancies, including gestational diabetes mellitus (GDM), are associated with a heightened level of oxidative stress, owing to both overproduction of free radicals and/or a defect in the antioxidant defenses. This has important implications on the mother, placental function, and fetal well-being. Animal models of diabetes have confirmed the important role of oxidative stress in the etiology of congenital malformations; the relative immaturity of the antioxidant system facilitates the exposure of embryos and fetuses to the damaging effects of oxidative stress. Of note, there are only a few clinical studies evaluating the potential beneficial effects of antioxidants in GDM. Thus, whether or not increased antioxidant intake can reduce the complications of GDM in both mother and fetus needs to be explored. This review provides an overview and updated data on our current understanding of the complications associated with oxidative changes in GDM.
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ABSTRACT: We performed a systematic review and meta-analysis to assess the effects of physical activity in preventing gestational diabetes mellitus (GDM).
We searched the literature in six electronic databases and bibliographies of relevant articles.
We included randomised controlled trials on pregnant women who did not have GDM and other complications previously and had increased physical activity as the only intervention. The risk of developing GDM was documented separately for the intervention and control groups.
Two reviewers extracted data and assessed quality independently. Data from the included trials were combined using a fixed-effects model. The effect size was expressed as relative risk (RR) and 95% CI.
Of the 1110 studies identified, six randomised controlled trials met the inclusion criteria. In three trials, the incidence of GDM was lower in the intervention group than in the control group, whereas two trials showed a higher incidence of GDM in the intervention group and the remaining trial found no GDM in either the intervention or control group. The meta-analysis resulted in a relative risk (RR) of GDM of 0.91 (95% CI 0.57 to 1.44), suggesting no significant difference in the risk of developing GDM between the intervention and the control groups. No indication of publication bias was found.
Evidence was insufficient to suggest that physical activity during pregnancy might be effective to lower the risk of developing GDM.
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