@misc{10481/57590, year = {2018}, month = {11}, url = {http://hdl.handle.net/10481/57590}, abstract = {Cold induced thermogenesis (CIT) in humans results mainly from the combination of both brown adipose tissue (BAT) and skeletal muscle thermogenic activity. The relative contribution of both tissues to CIT and to cold induced nutrient oxidation rates (CI-NUTox) remains, however, to be elucidated. We investigated the association of BAT and skeletal muscle activity after a personalized cold exposure with CIT and CI-NUTox in 57 healthy adults (23.0 2.4 years old; 25.1 4.6 kg/m2; 35 women). BAT and skeletal muscle (paracervical, sternocleidomastoid, scalene, longus colli, trapezius, parathoracic, supraspinatus, subscapular, deltoid, pectoralis major, and triceps brachii) metabolic activity were assessed by means of a 18Fluorodeoxyglucose positron emission tomography-computed tomography scan preceded by a personalized cold exposure. The cold exposure consisted in remaining in a mild cold room for 2 h at 19.5–20 C wearing a water perfused cooling vest set at 3.8 C above the individual shivering threshold. On a separate day, we estimated CIT and CI-NUTox by indirect calorimetry under fasting conditions for 1 h of personalized cold exposure. There was no association of BAT volume or activity with CIT or CI-NUTox (all P > 0.2).}, organization = {The study was supported by the Spanish Ministry of Economy and Competitiveness (PTA 12264-I), Fondo de Investigación Sanitaria del Instituto de Salud Carlos III (PI13/01393), and Retos de la Sociedad (DEP2016-79512-R), Fondos Estructurales}, publisher = {Frontiers Media}, keywords = {Brown fat}, keywords = {Non-shivering thermogenesis}, keywords = {Energy expenditure}, keywords = {Energy balance}, keywords = {Obesity}, title = {Brown Adipose Tissue and Skeletal Muscle 18F-FDG Activity After a Personalized Cold Exposure Is Not Associated With Cold-Induced Thermogenesis and Nutrient Oxidation Rates in Young Healthy Adults}, doi = {10.3389/fphys.2018.01577}, author = {Sánchez-Delgado, Guillermo and Martínez Téllez, Borja Manuel and García Rivero, Yolanda and Acosta Manzano, Francisco Miguel and Amaro Gahete, Francisco José and Alcantara, Juan M.A. and Llamas Elvira, José Manuel and Ruiz Ruiz, Jonatan}, }