RESUMO
OBJECTIVE: To describe bone mass density in a group of healthy 6 to 12 year-old Mexican children by a peripheral DEXA, adjusted for gender. MATERIAL AND METHODS: A cross-sectional study between 2006 and 2007 conducted in 1 965 children (982 male), without any medical condition, randomized from elementary schools in Mexico City. RESULTS: Changes in bone mineral density in girls show two phases: a lineal accretion (6-9 years) and an exponential curve (10 years and older); in boys these growth rates are less pronounced. CONCLUSIONS: It is considered that optimal interventions to improve bone mass density and peak bone mass should be performed between 6 to 12 years of age.
Assuntos
Absorciometria de Fóton , Densidade Óssea , Criança , Estudos Transversais , Feminino , Humanos , Masculino , México , Valores de ReferênciaRESUMO
OBJETIVO:Conocer la densidad mineral ósea (DMO), evaluada a través de DEXA periférica, ajustada por sexo, en una muestra de escolares mexicanos sanos de entre 6 a 12 años de edad. MATERIAL Y MÉTODOS: Estudio transversal efectuado en 1 965 escolares (982 masculinos), seleccionados de forma aleatoria en la Ciudad de México en 2006 y 2007. Se aplicó estadística descriptiva para variables nominales o categóricas y numéricas. RESULTADOS:La curva de cambio de la DMO en niñas muestra dos etapas: un crecimiento lineal (entre los 6 a 9 años de edad) y uno exponencial (a partir de los 10 años), mientras que en los niños las tasas de crecimiento son menos pronunciadas. CONCLUSIONES:Las intervenciones para mejorar la DMO y el pico máximo de masa ósea deben realizarse entre los 6 a los 12 años de edad.
OBJECTIVE:To describe bone mass density in a group of healthy 6 to 12 year-old Mexican children by a peripheral DEXA, adjusted for gender. MATERIAL AND METHODS: A cross-sectional study between 2006 and 2007 conducted in 1 965 children (982 male), without any medical condition, randomized from elementary schools in Mexico City. RESULTS:Changes in bone mineral density in girls show two phases: a lineal accretion (6-9 years) and an exponential curve (10 years and older); in boys these growth rates are less pronounced. CONCLUSIONS:It is considered that optimal interventions to improve bone mass density and peak bone mass should be performed between 6 to 12 years of age.
Assuntos
Criança , Feminino , Humanos , Masculino , Absorciometria de Fóton , Densidade Óssea , Estudos Transversais , México , Valores de ReferênciaRESUMO
Iron-deficiency anemia is still a health problem worldwide. Iron supplementation of some foods such as milk formulas and cereals apparently has not been the solution due to bioavailability of iron. In Mexico, there is high prevalence of anemia in children to date, mainly those under 2 years of age and predominantly in the Southern part of the country. Probably the main causes are iron-deficiency anemia in pregnant women, recurrent infections, such as gastroenteritis and parasites, and the most important one undoubtedly, deficient iron intake.
