Dierker L J, Rosen M G, Pillay S, Sorokin Y
Biol Neonate. 1982;42(1-2):66-72. doi: 10.1159/000241577.
Cyclic patterns of active and quiet fetal activity were evaluated in 36 clinically normal gravidas between 27 and 42 weeks of gestation. All infants were subsequently delivered between 37 and 42 weeks of gestation, were clinically normal and of appropriate weight for gestational age. Active-quiet cycles occurred less frequently and were of longer duration with increasing gestational age. Regression analysis of the number of active-quiet cycles with gestational age yielded a correlation coefficient of 0.52 (p less than 0.01). The similarity of fetal active-quiet cycles and active and quiet sleep cycles observed after birth is noted.
对36例孕27至42周临床正常的孕妇进行了胎儿活动活跃期与安静期的周期性模式评估。所有婴儿随后均在孕37至42周分娩，临床正常且出生体重与孕周相符。随着孕周增加，活跃-安静周期出现频率降低，持续时间延长。活跃-安静周期数量与孕周的回归分析得出相关系数为0.52（p<0.01）。文中指出了胎儿活跃-安静周期与出生后观察到的主动和安静睡眠周期的相似性。
