The purpose of this study was to describe the age-specific distribution of midfemoral intracortical porosity throughout the cortical width in males and females. Microradiography and an automated image analysis system were used to study midfemoral cortical bone specimens from 163 white people, including 77 males and 86 females, in a recent anthropological collection covering a broad age range. In each specimen, porosity (percentage of the cortical bone area occupied by pores), pore number, and pore size were measured throughout the entire cortex and in three cortical subregions of equal width labeled the periosteal, midcortical, and endosteal subregions. For each gender, relationships linking age to porosity, pore number, and mean pore size were assessed using regression analysis. In addition, age-and site-related changes in these three variables were tested for significance using two-way analysis of variance (ANOVA). Age explained 52% of the porosity variance in females and 13.5% in males. In each gender, there were significant age-and site-related differences in porosity, pore number, and pore size. In adults aged 60 years or younger, both pore size and pore number increased with increasing age, whereas in adults older than 60 years, pore size continued to increase but pore number decreased. In males, the age-related changes in pore size and pore number were proportionally similar in the three cortical subregions. In females, in contrast, the changes predominated in the endosteal subregion and resulted in significant cortical thinning. (J Bone Miner Res 2001;16:1308 -1317)
As ligações estabelecidas precocemente com as figuras parentais assumem um papel importante no desenvolvimento da individuação dos jovens adultos, na construção da sua personalidade e na manifestação do bem-estar psicológico. O presente estudo tem como objetivo estudar o papel preditor da separação-individuação aos pais e da personalidade no bem-estar psicológico e, ainda, testar o papel mediador da personalidade na associação anterior. A amostra é composta por 948 sujeitos com idades entre os 18 e os 30 anos de idade. Os resultados indicam que a separação-individuação aos pais positiva prediz positivamente o bem-estar psicológico e a personalidade emocionalmente ajustada. Por outro lado, o neuroticismo prediz negativamente o bem-estar psicológico. A personalidade emocionalmente ajustada assume um papel de mediação total na associação entre a separação-individuação na mãe positiva e no bem-estar psicológico. Por sua vez, a personalidade emocionalmente ajustada assumiu uma mediação parcial na associação entre a separação-individuação no pai positiva e o bem-estar psicológico.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.