Buffa Roberto, Floris Giovanni, Marini Elisabetta, Ortu Alessandra
Department of Experimental Biology, Anthropological Sciences Section, University of Cagliari, Monserrato (Cagliari), Italy.
Anthropol Anz. 2003 Dec;61(4):421-34.
In females, menarche is the defining moment of puberty, the period of life when the greatest body changes occur. In the present study, the metric and morphological variations associated with sexual maturation are defined in 155 Sardinian girls (10-17 years) and the role of some potentially influential variables is discussed: age, age at menarche and time since menarche. We studied thirty-eight anthropometric variables, the fat-free mass and the fat mass estimated by Bioelectrical Impedance Analysis. Statistical analyses were performed to evaluate the difference between pre- and post-menarcheal girls of the same age (Student's t-test) and to evaluate the different role played by the variables (principal components analysis, cluster analysis, multiple regression). The results demonstrate that the body dimensions of the adolescent girls mainly increase in concomitance with sexual maturation. The age at menarche influences the fat mass but not the distribution of visceral and subcutaneous fat. The time since menarche has also no effect on the distribution of subcutaneous fat.
在女性中，初潮是青春期的决定性时刻，是身体发生最大变化的生命阶段。在本研究中，定义了155名撒丁岛女孩（10 - 17岁）与性成熟相关的测量指标和形态学变化，并讨论了一些潜在影响变量的作用：年龄、初潮年龄和初潮后的时间。我们研究了38个人体测量变量、去脂体重和通过生物电阻抗分析估算的脂肪量。进行了统计分析，以评估同一年龄初潮前和初潮后女孩之间的差异（学生t检验），并评估变量所起的不同作用（主成分分析、聚类分析、多元回归）。结果表明，青春期女孩的身体尺寸主要随着性成熟而增加。初潮年龄影响脂肪量，但不影响内脏脂肪和皮下脂肪的分布。初潮后的时间对皮下脂肪的分布也没有影响。
