RT Journal Article T1 Effects of aging on experimentally induced pain perception during a distraction task A1 Fernández Palacios, Francisco Ginés A1 Tejera Alonso, Angela A1 Pacho Hernández, Juan C. A1 Naeimi, Arvin A1 de la Llave Rincón, Ana I. A1 Ambite Quesada, Silvia A1 Ortega Santiago, Ricardo A1 Fernández de las Peñas, César A1 Valera Calero, Juan Antonio A1 Cigarán Mendez, Margarita AB To investigate the effects of psychological (anxiety, depression, pain catastrophizing) aspects, pain sensitivity, cognitive performance and executive functions, on pain perception during a distraction task in an acute pain laboratory in young and elderly adults. Twenty-six young (age: 20.0 ± 1.6 years) and thirty-three elderly (age: 68.0 ± 3.8 years) adults completed four self-reported questionnaires (Hospital Anxiety and Depression Scale—HADS, Pain Anxiety Symptoms Scale-20—PASS/20, Pain Catastrophizing Scale—PCS, and Pittsburgh Sleep Quality Index—PSQI), pressure pain thresholds (PPTs), a battery of executive functions (working memory, cognitive flexibility, mental inhibition), and attention levels before performing two distraction tasks (1-back, 2-back). Pain was experimentally induced with a thermal stimulus applied at the non-dominant forearm to provoke moderate pain (70/100 points) before and during the distraction tasks. Age (young, elderly), psychological and psychophysical variables, and neurocognitive test performance levels (low, medium, high) were included in separate ANCOVAs to compare pain intensity at baseline and during distraction tasks. All ANOVAs revealed a main effect of distraction task, indicating that perceived pain intensity scores were lower during both distraction tasks (p < 0.001) compared to baseline. Overall, there was no significant effect of age on perceived pain intensity after distraction tasks, except for an interaction effect between the distraction task and age group depending on PPTs levels (F [2,49] = 3.7, p = 0.03). Elderly adults (with higher PPTs) reported lower perceived pain intensity during both distraction tasks compared to younger adults (lower PPTs). This study found that the hypoalgesic effect of a distraction task is not directly associated with age or neurocognitive function and attention levels in pain-free subjects, but it was related with higher PPTs (lower pressure pain hyperalgesia). PB Nature Research SN 2045-2322 YR 2025 FD 2025-03-27 LK https://hdl.handle.net/20.500.14352/132046 UL https://hdl.handle.net/20.500.14352/132046 LA eng NO Fernández-Palacios FG, Tejera-Alonso A, Pacho-Hernández JC, Naeimi A, de-la-Llave-Rincón AI, Ambite-Quesada S, et al. Effects of aging on experimentally induced pain perception during a distraction task. Scientific Reports. 2025;15(1). DS Docta Complutense RD 20 mar 2026