Norwegian School of Sport Sciences, Department of Sports Medicine, Ullevål Stadion 0806 Oslo, Norway.
BMC Pregnancy Childbirth. 2011 Sep 30;11:66. doi: 10.1186/1471-2393-11-66.
Birth weight plays an important role in infant mortality and morbidity, childhood development, and adult health. To date there are contradictory results regarding the role of physical activity on birth weight. In addition, it is questioned whether exercise during second and third trimesters of pregnancy might affect gestational age and increase the risk of preterm delivery. Hence, the purpose of this study was to examine the effect of a supervised exercise-program on birth weight, gestational age at delivery and Apgar-score.
Sedentary, nulliparous pregnant women (N = 105), mean age 30.7 ± 4.0 years, pre-pregnancy BMI 23.8 ± 4.3 were randomized to either an exercise group (EG, n = 52) or a control group (CG, n = 53). The exercise program consisted of supervised aerobic dance and strength training for 60 minutes, twice per week for a minimum of 12 weeks, with an additional 30 minutes of self-imposed physical activity on the non-supervised week-days.
There was no statistically significant difference between groups in mean birth weight, low birth weight (< 2500 g) or macrosomia (≥ 4000 g). Per protocol analyses showed higher Apgar score (1 min) in the EG compared with the CG (p = 0.02). No difference was seen in length of gestation.
Aerobic-dance exercise was not associated with reduction in birth weight, preterm birth rate or neonatal well-being.
出生体重对婴儿死亡率和发病率、儿童发育以及成人健康都有着重要影响。目前，关于体力活动对出生体重的作用存在相互矛盾的结果。此外，人们质疑妊娠第二和第三阶段的运动是否会影响胎龄并增加早产的风险。因此，本研究旨在探讨监督运动计划对出生体重、分娩时的胎龄和阿普加评分的影响。
久坐不动的初产妇（N = 105），平均年龄为 30.7 ± 4.0 岁，孕前 BMI 为 23.8 ± 4.3，随机分为运动组（EG，n = 52）或对照组（CG，n = 53）。运动方案包括监督下的有氧舞蹈和力量训练，每周 2 次，每次 60 分钟，至少 12 周，非监督周内每天额外进行 30 分钟的自我身体活动。
两组间的平均出生体重、低出生体重（< 2500 克）或巨大儿（≥ 4000 克）均无统计学差异。按方案分析显示，EG 组的 Apgar 评分（1 分钟）高于 CG 组（p = 0.02）。两组间的胎龄无差异。
有氧舞蹈运动与降低出生体重、早产率或新生儿健康状况无关。
