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00925njm 22002777a 4500 dc Busquets-Cortés, Carla author Capó Fiol, Xavier author Bibiloni Esteva, Maria Del Mar author Martorell, Miquel author Ferrer, Miguel D author Argelich, Emma author Bouzas, Cristina author Carreres, Sandra author Tur, Josep A author Pons, Antoni author Soldevila Verdeguer, Carla author 2018-10 Regular physical activity prescription is a key point for healthy aging and chronic disease management and prevention. Our aim was to evaluate the antioxidant defense system and the mitochondrial status in peripheral blood mononuclear cells (PBMCs) and the level of oxidative damage in plasma in active, intermediate and inactive elderly. In total, 127 healthy men and women >55 years old participated in the study and were classified according on their level of declared physical activity. A more active lifestyle was accompanied by lower weight, fat mass and body mass index when compared to a more sedentary life-style. Active participants exhibited lower circulating PBMCs than inactive peers. Participants who reported higher levels of exercise had increased antioxidant protein levels when compared to more sedentary partakers. Carbonylated protein levels exhibited similar behavior, accompanied by a significant raise in expression of cytochrome c oxidase subunit IV in PBMCs. No significant changes were found in the activities of antioxidant enzymes and in the expression of structural (MitND5) and mitochondrial dynamic-related (PGC1 and Mitofusins1/2.) proteins. Active lifestyle and daily activities exert beneficial effects on body composition and it enhances the antioxidant defenses and oxidative metabolism capabilities in PBMCs from healthy elderly. Busquets-Cortes C, Capo Fiol X, Bibiloni Esteva MM, Martorell M, Ferrer MD, Argelich Trigo E, et al. Peripheral Blood Mononuclear Cells Antioxidant Adaptations to Regular Physical Activity in Elderly People. Nutrients. 2018 Oct;10(10):1555. 10.3390/nu10101555 2072-6643 Nutrients http://hdl.handle.net/20.500.13003/9111 30347790 L624529757 2-s2.0-85055191489 https://hdl.handle.net/20.500.12105/22583 448821300221 Active lifestyle Antioxidants Daily habits Elderly Healthy aging Mitochondria PBMCs ROS Peripheral Blood Mononuclear Cells Antioxidant Adaptations to Regular Physical Activity in Elderly People