Late subadult ontogeny and adult aging of the human thorax reveals divergent growth trajectories between sexes

摘要: Sexual dimorphism is an important feature of adult thorax morphology, but when and how sex-related differences in the ribcage arise during ontogeny poorly known. Previous research proposed that sex-related size nasal region puberty. Therefore, we explore whether ribcage sexual also arises at time whether this maintained until old age. We measured 526 (semi)landmarks on 80 CT-based human reconstructions, individuals ranging from 7 to 65 year-old. The 3D coordinates were submitted Procrustes superimposition analyzed. Our results show the trajectories shape between sexes diverge at around 12 years age, continue slightly diverging differential ontogenetic trends cause male ribcages become deeper, shorter, wider than female. results are consistent with the evidence from cranial respiratory system, with development probably related to changes in body composition puberty combined changes reproductive system.