Does obstetric protection apply to small‐bodied females??A comparison between small‐bodied Jomon foragers and large‐bodied Yayoi agriculturalists in the prehistoric Japanese archipelago
Does obstetric protection apply to small‐bodied females??A comparison between small‐bodied Jomon foragers and large‐bodied Yayoi agriculturalists in the prehistoric Japanese archipelago
复制标题
产科保护是否适用于体型较小的女性？史前日本列岛体型较小的绳文采集者与体型较大的弥生农耕者的比较
DOI：
10.1002/ajhb.23236
复制
发表时间：
2019
影响因子：
2.9
通讯作者：
Takamuku Hirofumi
中科院分区：
文献类型：
--
作者：
近藤和敬;近藤和敬;近藤和敬;近藤和敬;Takamuku Hirofumi
本研究考察了日本绳纹时代中后期（公元前5000-3000年）到弥生时代中期（公元前400 - 200年至公元1年左右）过渡时期产妇骨盆与体型之间的关系。方法对绳纹人（女性37例，男性26例）和弥生人（女性32例，男性29例）的骨骸进行8项测量，包括左髋骨、骨盆关节和股骨。结果绳纹时代至弥生时代女性骨盆真入口前径明显减小，而男性无统计学意义。虽然从绳纹时代到弥生时代，男性和女性的身高都有显著增加，但体重没有明显变化。真实和虚假骨盆测量值（最大骨盆高度和最大骨盆宽度）与体型（身高和体重）之间的相关系数表明，样本中真实和虚假骨盆测量值或体型之间没有显著的关系，但在身材矮小的绳纹女性中没有显著的相关性。使用对数大小和对数形状变量的主成分分析结果表明，绳纹和弥生女性的真实骨盆大小与她们的骨盆或身体大小无关，而男性的真实骨盆形状的性别二态方面与假骨盆或身体大小之间存在相关性，而女性则没有。结论细小体型的绳纹女性维持其产科尺寸是为了满足产科需要。
ObjectivesThis study examined the relationship between maternal pelvic and body size in the transition from the Middle‐Final Jomon period (c. 5000–3000 BC) to the Middle Yayoi period (c. 400~200 BC to around AD 1) in Japan.MethodsEight measurements, including the left hip bone, articulated pelvis, and femur, were taken from Jomon (females: 37, males: 26) and Yayoi skeletal remains (females: 32, males: 29).ResultsA statistically significant decrease in the anterior diameter of the true pelvic inlet was demonstrated in females from the Jomon to the Yayoi period, but not in males. While significant increases in stature from the Jomon to the Yayoi period were found in both males and females, no significant changes in body mass were seen. The correlation coefficients between true and false pelvic measurements (maximum pelvic height and maximum pelvic breadth) and body size (stature and body mass) suggested few significant relationships between true and false pelvic measurements or body size among the samples, but no significant correlations in small‐bodied Jomon females. Results of principal component analysis using the log‐size and log‐shape variables suggested that the true pelvic size in Jomon and Yayoi females was not correlated with their general pelvic or body size, and there were correlations between sexually dimorphic aspects of true pelvis shape and either the false pelvis or body size in males but not females.ConclusionsThese results suggest that the obstetrical dimensions in small‐bodied Jomon females were maintained for obstetric needs.