Abstract: Objective To analysis relationship between pre-pregnancy body,pregnancy exercise and neonatal birth weight and to investigate the factors affecting birth weight. Methods To use the inclusion and exclusion criteria of cohort study methodology,525 cases of pregnant women answered questionnaire survey and conducted physical examination,and obtained relevant indicators of pregnant women and newborns. Results Maternal prepregnancy under weight problems in Hebei province was 16.76%.The rate of overweight was 13.9%,the rate of obesity was 7.63%; pregnancy weight increase is insufficient and excessive incidenced rates were 8.8% and 45.7%.There were significantly higher rates of exercise influence on the birth weight of newborns(F=3.82,P=0.034).The neonatal birth weight was (3.33±0.42)kg during the pregnancy insist on exercise,and the birth weight was (3.36±0.44)kg during pregnancy did not persist in exercise(F=1.853,P>0.05).while the pre-pregnancy body was not statistically significant on the birth weight of newborns. Conclusion Exercise is good for pregnant women and newborns grow properly,reducing the incidence of huge children's.

Key words: pre-pregnancy body, pregnancy exercise, neonatal birth weight, persisting exercise

摘要： 目的 分析孕前体型孕期锻炼与新生儿出生体重的关系,以探讨新生儿出生体重的影响因素。方法 通过队列研究方法和纳入排除标准,对525例孕妇进行问卷调查和体格检查,以获得孕妇、新生儿的相关指标。结果 河北省孕妇孕前体重不足为16.76%,超重率为13.9%,肥胖率为7.63%;孕期体重增加不足和过度发生率分别是8.8%,45.7%;孕期坚持锻炼对新生儿出生体重有显著的影响(F=3.82,P=0.034),孕期锻炼新生儿出生体重为(3.33±0.42)kg,而孕期没有坚持锻炼的新生儿出生体重为(3.36±0.44)kg。孕前体型对新生儿体重无显著影响(F=1.853,P>0.05)。结论 河北省孕妇妊娠期体重增加过度现象较为严重;孕妇适当锻炼对新生儿成长有益,减少巨大儿的发生率。

关键词: 孕前体型, 孕期锻炼, 新生儿出生体重, 坚持锻炼