> Pregnancy weight gain in obese women decreases with a dietary program

The researchers found that obese women who took part in a weight management program during pregnancy are significantly increased during pregnancy, and have had a lower proportion of children large for the età gestational (LGA) of obese women who received only advice on diet.

Of 114 pregnant women with a body mass index (BMI) più high of 30 kg/m2, those who were randomly assigned to a management intervention of weight through a group, increased by an average of 5.0 kg of weight from the time of randomization to 34 weeks of gestation in comparison to 8.4 kg of the women who had received advice in a single session with a dietician (P<.001). Report Kimberly K. Vesco, physician, obstetric/gynecologic and clinical researcher for the Kaiser Permanente Center for Health research in Portland, Oregon. The article has been published in the September issue of Obesity.

Only 9% of the children born to the women in the group of weight management was large for the gestational age in comparison to 26% of those born to women in the control group (P=.002). Babies that are large for the età gestational are at increased risk of being overweight, having an increased fat mass, and having a più high systolic blood pressure compared to their peers of weight in pregnancy normal.

” our intervention to change the general style of life has produced less gestational weight gain and reduced the probability; of large babies among obese women. If this or similar interventions to improve the health of the mother and of the child in the long term is still to be demonstrated”, the authors write.

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“most women in our intervention took a little bit of weight, but have taken and retained significantly less than women who have not participated in the intervention”, said dr. Vesco in a press release. “Even with support, it is difficult to limit the increase in weight during pregnancy, so women who are overweight or obese should aim for the minimum limit of weight gain recommended by the Institute of medicine and should seek support and nutritional counseling to be helped to achieve their purposes”.

The guidelines of the Institute of medicine, published in 2009, recommend that obese women, defined as those with a body mass index of 30 mg/kg2 or more, an increase of approximately 5 to 9 pounds, and that the percentage increase in weight during the second and third quarter have an average of 0.22 kg/week (between 0.17 – 0.27 kg/week).

The authors randomly assigned the obese women pregnant to receive either a single session of dietary advice or intervention on the life style, which consisted of a combination of diet and recommendations on exercise and techniques for self-management behavioral to help the participants to begin and maintain behavioral changes as healthy.

The women in the intervention group have been advised to adopt a diet based on the plan of Approaches Dietary to Stop Hypertension, and to engage in at least 30 minutes of activity; moderate physical every day, if there were no medical contraindications or midwives.

The women in the control group were informed on how to have a healthy diet, without specific reference to the plan of Approaches Dietary to Stop Hypertension. The session has been the only addition to the study to their routine care as a midwife.

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As noted before, women in the intervention group took less weight during pregnancy and have had a più low percentage of children in the LGA, by getting 2 of the 3 primary purposes of the study.

The third purpose, the change of average weight from the starting point to two weeks after delivery, was also significantly better among the women in the group of the active management of the weight. These women had a mean decrease of weight of 2.6 kg in comparison to the average increase of 1.2 kg among those in the control group (difference in mean change, -3.8; P< .001).

in Addition, women in the intervention group had a lower prevalence of weight gain over the 0.27 kg/week recommended in the guidelines of the Institute of medicine (44% versus 82%; P < .001).

The study has been supported by the national Institute of Child Health and Human Development. The authors have had no financial relationships relevant.

Tratto da Medscape Medical News

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8 September 2014