21 research outputs found
VO2 indirect maximum and fitness age of sedentary and non-sedentary
El objetivo es: comparar la edad cronolĂłgica con la edad fitness obtenida
por medio del VO2 máximo indirecto, de un grupo de personas sedentarias y no
sedentarias. MĂ©todo: 253 personas fueron evaluadas respecto a masa corporal,
estatura, perĂmetro de cintura, frecuencia cardiaca basal y un cuestionario del
modelo web "Fitness Calculator". Los resultados demostraron diferencias
significativas en las variables antropométricas y fisiológicas entre personas
sedentarias y no sedentarias (P<,001). Las personas no sedentarias tienen un
mayor VO2máx en comparación con las personas sedentarias. Las personas
sedentarias indican que presentan una edad fitness que se encuentra sobre 12
años cronológicos promedio de lo esperado. Conclusión: Las personas
sedentarias tienen una mayor edad fitness, esto permite establecer que su
cuerpo se deteriora más rápido que los no sedentarios. El bajo VO2 máx es un
potente predictor de la capacidad cardiorrespiratoria y se establece como un
predictor de enfermedades cardiovascularesThe purpose was to compare chronological age with fitness age obtained
through indirect VO2max in a group of sedentary and non-sedentary people.
Method: 253 people were evaluated for body mass, height, waist circumference,
basal heart rate and a web model questionnaire "Fitness Calculator". The
results: showed significant differences in anthropometric and physiological
variables between sedentary and non-sedentary people (P <.001). Non-
Sedentary people have a greater higher VO2máx group compared to sedentary
people. This indicates that sedentary people have a fitness age 12 years over
their expected chronological average age. Conclusion: Sedentary people have
a higher fitness age; therefore your body deteriorates faster than the nonsedentary
people. A low level of VO2máx is a powerful predictor of
cardiorespiratory capacity and of cardiovascular diseasesEl estudio fue financiado por la Escuela de KinesiologĂa de la Universidad Bernardo O`higgin
Topological analysis of tetraphosphorus oxides (P4O6+n (n = 0–4))
Quantum chemical calculations were used to analyze the chemical bonding and the reactivity of phosphorus oxides (P4O6+n (n=-4)). The chemical bonding was studied using topological analysis such as atoms in molecules (AIM), electron localization function (ELF), and the reactivity using the Fukui function. A classification of the P-O bonds formed in all structures was done according to the coordination number in each P and O atoms. It was found that there are five P-O bond types and these are distributed among the five phosphorus oxides structures. Results showed that there is good agreement among the evaluated properties (length, bond order, density at the critical point, and disynaptic population) and each P-O bond type. It was found that regardless of the structure in which a P-O bond type is present the topological and geometric properties do not have a significant variation. The topological parameters electron density and Laplacian of electron density show excellent linear correlation with the average length of P-O bond in each bond type for each structure. From the Fukui function analysis it was possible to predict that from P4O6 until P4O8 the most reactive regions are basins over the P. © Springer-Verlag Berlin Heidelberg 2012