Body Composition The CC at the molecular levelwill be determined by scanning Total Body and Regional by DXA (Hologic®, QDR4500W software, version 11.2 QDR), being determined: bone mineral content (BMC), mass fat (MG) MG percentage (% BF) and lean soft tissue (TMM). The portion for each of these components will consider five regional sites: upper (Sup), lower (Inf), appendicular (Ape, Sup + Inf), trunk (Tro) and total (Tot). Prior to the DXA participants will be asked to empty the bladder and will wear one hospital gown. During the examination they should be positioned centrally supine on the scanner table, with outstretched legs and háluces contact; the upper body must remain extended along the trunk and hands should not be in contact with the trunk and it is important that patients stay still during the procedure.