Examinando por Autor "Kramer, Arthur F."
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Ítem Active gains in brain using exercise during aging (AGUEDA): protocol for a randomized controlled trial(Frontiers Media S.A., 2023) Solis-Urra, Patricio; Molina-Hidalgo, Cristina; García-Rivero, Yolanda; Costa-Rodriguez, Claudia; Mora-Gonzalez, Jose; Fernandez-Gamez, Beatriz; Olvera-Rojas, Marcos; Coca-Pulido, Andrea; Toval, Angel; Bellón, Darío; Sclafani, Alessandro; Martín-Fuentes, Isabel; Triviño-Ibañez, Eva María; de Teresa, Carlos; Huang, Haiqing; Grove, George; Hillman, Charles H.; Kramer, Arthur F.; Catena, Andrés; Ortega, Francisco B.; Gómez-Río, Manuel; Erickson, Kirk I.; Esteban-Cornejo, IreneAlzheimer’s disease is currently the leading cause of dementia and one of the most expensive, lethal and severe diseases worldwide. Age-related decline in executive function is widespread and plays a key role in subsequent dementia risk. Physical exercise has been proposed as one of the leading non-pharmaceutical approaches to improve executive function and ameliorate cognitive decline. This single-site, two-arm, single-blinded, randomized controlled trial (RCT) will include 90 cognitively normal older adults, aged 65–80 years old. Participants will be randomized to a 24-week resistance exercise program (3 sessions/week, 60 min/session, n = 45), or a wait-list control group (n = 45) which will be asked to maintain their usual lifestyle. All study outcomes will be assessed at baseline and at 24-weeks after the exercise program, with a subset of selected outcomes assessed at 12-weeks. The primary outcome will be indicated by the change in an executive function composite score assessed with a comprehensive neuropsychological battery and the National Institutes of Health Toolbox Cognition Battery. Secondary outcomes will include changes in brain structure and function and amyloid deposition, other cognitive outcomes, and changes in molecular biomarkers assessed in blood, saliva, and fecal samples, physical function, muscular strength, body composition, mental health, and psychosocial parameters. We expect that the resistance exercise program will have positive effects on executive function and related brain structure and function, and will help to understand the molecular, structural, functional, and psychosocial mechanisms involved. Copyright © 2023 Solis-Urra, Molina-Hidalgo, García-Rivero, Costa-Rodriguez, Mora-Gonzalez, Fernandez-Gamez, Olvera-Rojas, Coca-Pulido, Toval, Bellón, Sclafani, Martín-Fuentes, Triviño-Ibañez, de Teresa, Huang, Grove, Hillman, Kramer, Catena, Ortega, Gómez-Río, Erickson and Esteban-Cornejo.Ítem Association of sedentary behavior with brain structure and intelligence in children with overweight or obesity: The activebrains project(MDPI, 2024-04) Zavala-Crichton, Juan Pablo; Esteban-Cornejo, Irene; Solis-Urra, Patricio; Mora-Gonzalez, José; Cadenas-Sanchez, Cristina; Rodriguez-Ayllon, María; Migueles, Jairo H.; Molina-Garcia, Pablo; Verdejo-Roman, Juan; Kramer, Arthur F.; Hillman, Charles H.; Erickson, Kirk I.; Catena, Andrés; Ortega, Francisco B.We investigated the associations of different sedentary behaviors (SB) with gray matter volume and we tested whether SB related to gray matter volume is associated with intelligence. Methods: 99 children with overweight or obesity aged 8–11 years participated in this cross-sectional study. SB was measured using the Youth Activity Profile-Spain questionnaire. T1-weighted images were acquired with a 3.0 T Magnetom Tim Trio system. Intelligence was assessed with the Kaufman Brief Test. Whole-brain voxel-wise multiple regression models were used to test the associations of each SB with gray matter volume. Results: Watching TV was associated with lower gray matter. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.Ítem The effects of an exercise intervention on neuroelectric activity and executive function in children with overweight/obesity: The ActiveBrains randomized controlled trial(John Wiley and Sons Inc, 2024-01) Mora-Gonzalez, Jose; Esteban-Cornejo, Irene; Solis-Urra, Patricio; Rodriguez-Ayllon, María; Cadenas-Sanchez, Cristina; Hillman, Charles H.; Kramer, Arthur F.; Catena, Andrés; Ortega, Francisco B.Objective: To investigate whether a 20-week aerobic and resistance exercise program induces changes in brain current density underlying working memory and inhibitory control in children with overweight/obesity. Methods: A total of 67 children (10.00 ± 1.10 years) were randomized into an exercise or control group. Electroencephalography (EEG)-based current density (μA/mm2) was estimated using standardized low-resolution brain electromagnetic tomography (sLORETA) during a working memory task (Delayed non-matched-to-sample task, DNMS) and inhibitory control task (Modified flanker task, MFT). In DNMS, participants had to memorize four stimuli (Pokemons) and then select between two of them, one of which had not been previously shown. In MFT, participants had to indicate whether the centered cow (i.e., target) of five faced the right or left. Results: The exercise group had significantly greater increases in brain activation in comparison with the control group during the encoding phase of DNMS, particularly during retention of second stimuli in temporal and frontal areas (peak t = from 3.4 to 3.8, cluster size [k] = from 11 to 39), during the retention of the third stimuli in frontal areas (peak t = from 3.7 to 3.9, k = from 15 to 26), and during the retention of the fourth stimuli in temporal and occipital areas (peak t = from 2.7 to 4.3, k = from 13 to 101). In MFT, the exercise group presented a lower current density change in the middle frontal gyrus (peak t = −4.1, k = 5). No significant change was observed between groups for behavioral performance (p ≥ 0.05). Conclusion: A 20-week exercise program modulates brain activity which might provide a positive influence on working memory and inhibitory control in children with overweight/obesity. © 2023 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd.