Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, Madrid, Spain.
Int J Obes (Lond). 2009 Sep;33(9):1048-57. doi: 10.1038/ijo.2009.150. Epub 2009 Jul 28.
We examined the effect of light intensity resistance exercise training performed during the second and third trimester of pregnancy on the newborn's birth size. We also studied the association between maternal body weight prior to pregnancy and newborn's birth size.
Randomised controlled trial.
We randomly assigned 160 sedentary gravidae to either a training (n=80) or a control (n=80) group. The training programme focused on light resistance and toning exercises (three times per week, 35-40 min per session). We recorded the Apgar score, birth weight, birth length, and head circumference of the newborn, as well as gestational age at time of delivery from hospital perinatal records. We also measured maternal weight and height before parity and gestational weight gain.
Maternal characteristics neither differed between groups (all P>0.1) nor newborn characteristics (all P>0.1). Maternal body weight was positively and significantly associated with newborn's birth weight and length only in the control group (beta=19.20 and 0.065, respectively, P<0.01).
Light intensity resistance training performed over the second and third trimester of pregnancy does not have a negative impact on the newborn's body size or overall health. Exercise interventions might attenuate the adverse consequences of maternal body weight before pregnancy on the newborn's birth size.
我们研究了妊娠中期和晚期进行的低强度抗阻运动训练对新生儿出生体重的影响。我们还研究了妊娠前母亲体重与新生儿出生体重之间的关系。
随机对照试验。
我们将 160 名久坐的孕妇随机分为训练组（n=80）和对照组（n=80）。训练方案侧重于轻阻力和塑形运动（每周 3 次，每次 35-40 分钟）。我们从医院围产期记录中记录新生儿的阿普加评分、出生体重、出生身长和头围，以及分娩时的胎龄。我们还测量了产妇的孕前体重和身高以及孕期体重增加。
产妇特征在两组之间没有差异（均 P>0.1），新生儿特征也没有差异（均 P>0.1）。仅在对照组中，母亲体重与新生儿出生体重和身长呈正相关且具有统计学意义（分别为 beta=19.20 和 0.065，P<0.01）。
妊娠中期和晚期进行的低强度抗阻运动训练对新生儿的体型或整体健康没有负面影响。运动干预可能会减轻妊娠前母亲体重对新生儿出生体重的不利影响。
