Blood samples were taken under standardized conditions between 8:15 and 9:00 a.m. after at least 12 hours fasting by puncturing the cubital vein. Before the extraction, fasting was confirmed by the child and his parents. When it was anticipated that the transfer of samples to the laboratory would take longer than 75 minutes they were centrifuged
in situ and transferred refrigerated. Three aliquots of each sample were frozen, one for the determination of biochemical variables investigated in this study and the others for future analyses of which the parents were aware [19 (
link)].
The following biochemical parameters were determined: triglycerides (TG), GPO-PAP (glycerolphosphate oxidase, peroxidase enzymatic method) and c-direct plus HDL.
Lipid profiles were determined over a 48-hour period using a
MODULAR DPP system from Roche Diagnostics, and insulin levels were assessed using an
Immulite 2000 double system platform of Siemens.
Díez-Fernández A., Sánchez-López M., Gulías-González R., Notario-Pacheco B., Cañete García-Prieto J., Arias-Palencia N, & Martínez-Vizcaíno V. (2015). BMI as a Mediator of the Relationship between Muscular Fitness and Cardiometabolic Risk in Children: A Mediation Analysis. PLoS ONE, 10(1), e0116506.