Examinando por Autor "Alacid, Fernando"
Mostrando 1 - 5 de 5
Resultados por página
Opciones de ordenación
Ítem Acute Fatigue Impairs Heart Rate Variability and Resting Muscle Oxygen Consumption Kinetics(Multidisciplinary Digital Publishing Institute (MDPI), 0024-10) Vasquez-Bonilla, Aldo A; Yáñez-Sepúlveda, Rodrigo; Tuesta, Marcelo; Martin, Eduardo Báez-San; Monsalves-Álvarez, Matías; Olivares-Arancibia, Jorge; Duclos-Bastías, Daniel; Recabarren-Dueñas, Catalina; Alacid, FernandoFeatured Application: Importantly, measurements obtained through VOT-NIRS can vary significantly post-exercise, which should be considered by researchers before application. This study evaluated the influence of acute fatigue on heart rate variability (HRV) and muscle oxygen saturation (SmO2) at rest, as well as the reliability of SmO2 data measured using near-infrared spectroscopy (NIRS) during a vascular occlusion test (VOT). Twelve physically active subjects participated. Measurements included perceived muscle soreness using the visual analog scale (VAS pain), HRV parameters, variables of resting SmO2 (desaturation and resaturation), and reoxygenation kinetics (mean response time, MRT) through a VOT-NIRS located in the vastus lateralis (VL). Measurements were taken at three points: 24 h before, before exhaustive exercise, and 30 min after exhaustive exercise. The results indicated that acute fatigue increased resting muscle oxygen consumption in desaturation (+22 SmO2) and resaturation (+18 SmO2), improved MRT (−15 s), and elevated sympathetic nervous system (SNS) activity, as observed in the R-R interval (−262 ms) and SNS index (+0.5). HRV significantly influenced desaturation (r2 = 0.69), resaturation (r2 = 0.60), and MRT (r2 = 0.54). Reliability was established with an ICC of 0.49 and 0.63 for desaturation and resaturation, respectively. Real changes in desaturation and resaturation should be considered ≥ 7% SmO2 at rest and ≥ 11% SmO2 to avoid daily fatigue interference. In conclusion, acute fatigue increases resting SmO2 consumption and is associated with higher SNS activity and increased VAS pain. © 2024 by the authors.Ítem Acute Fatigue Impairs Heart Rate Variability and Resting Muscle Oxygen Consumption Kinetics(Multidisciplinary Digital Publishing Institute (MDPI), 2024-10) Vasquez-Bonilla, Aldo A.; Yáñez-Sepúlveda, Rodrigo; Tuesta, Marcelo; Martin, Eduardo Báez-San; Monsalves-Álvarez, Matías; Olivares-Arancibia, Jorge; Duclos-Bastías, Daniel; Recabarren-Dueñas, Catalina; Alacid, FernandoFeatured Application: Importantly, measurements obtained through VOT-NIRS can vary significantly post-exercise, which should be considered by researchers before application. This study evaluated the influence of acute fatigue on heart rate variability (HRV) and muscle oxygen saturation (SmO2) at rest, as well as the reliability of SmO2 data measured using near-infrared spectroscopy (NIRS) during a vascular occlusion test (VOT). Twelve physically active subjects participated. Measurements included perceived muscle soreness using the visual analog scale (VAS pain), HRV parameters, variables of resting SmO2 (desaturation and resaturation), and reoxygenation kinetics (mean response time, MRT) through a VOT-NIRS located in the vastus lateralis (VL). Measurements were taken at three points: 24 h before, before exhaustive exercise, and 30 min after exhaustive exercise. The results indicated that acute fatigue increased resting muscle oxygen consumption in desaturation (+22 SmO2) and resaturation (+18 SmO2), improved MRT (−15 s), and elevated sympathetic nervous system (SNS) activity, as observed in the R-R interval (−262 ms) and SNS index (+0.5). HRV significantly influenced desaturation (r2 = 0.69), resaturation (r2 = 0.60), and MRT (r2 = 0.54). Reliability was established with an ICC of 0.49 and 0.63 for desaturation and resaturation, respectively. Real changes in desaturation and resaturation should be considered ≥ 7% SmO2 at rest and ≥ 11% SmO2 to avoid daily fatigue interference. In conclusion, acute fatigue increases resting SmO2 consumption and is associated with higher SNS activity and increased VAS pain.Ítem Anthropometry, body composition, somatotype and asymmetry of canoe sprint world champion: A case study(SAGE Publications Ltd, 0025) Yáñez-Sepúlveda, Rodrigo; Herrera-Amante, Carlos A; Clemente-Suárez, Vicente J; Vasquez-Bonilla, Aldo; Alacid, Fernando; Tuesta, Marcelo i; Báez-San Martín, Eduardo; Giakoni-Ramírez, Frano; Cristi-Montero, CarlosBackground: Body composition is a determinant of physical fitness and sports performance. Aim: To describe the anthropometric characteristics, body composition, somatotype, and asymmetries of the 2023 world champion in the C1-1000 canoeing event. Methods: Dual-energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA), and anthropometry were used to describe the athlete's body composition. Results: The results showed a fat tissue distribution of 16.3% by DXA, 15.9% by BIA, and 19.0% by anthropometry. Muscle tissue was reported at 32.0 kg (47.5%) by BIA and 34.1 kg (50.6%) by anthropometry. Conclusions: The athlete exhibits low levels of fat mass with high lean mass, factors that enable optimal development in world-class sports. © The Author(s) 2025.Ítem Body Asymmetry and Sports Specialization: An Exploratory Anthropometric Comparison of Adolescent Canoeists and Kayakers(Multidisciplinary Digital Publishing Institute (MDPI), 0025) Herrera-Amante, Carlos Abraham; Carvajal-Veitía, William; Yáñez-Sepúlveda, Rodrigo; Alacid, Fernando; Gavala-González, Juan c; López-Gil, José Francisco; Olivares-Arancibia, Jorge i Send mail to Olivares-Arancibia J.;; Ramos-García, César OctavioBackground/Objectives: The evaluation of body asymmetry between the right and left sides of the body is crucial in the context of sports because of its potential impact on performance and injury prevention. This study analyzed the anthropometric differences between the right and left sides of the body in adolescent (13.0 [2.0] years) male canoeists and kayakers from Spain. This study aimed to explore the asymmetries associated with these disciplines. Methods: Anthropometric assessments were carried out on 27 male adolescents (13 canoeists and 14 kayakers). A total of 58 anthropometric variables were assessed, including 23 pairs of bilateral variables and 12 unilateral measurements. The evaluations included basic measures, skinfolds, girths, lengths, and breadths. Relative differences between sides were calculated via the bilateral asymmetry index (%BAI). Nonparametric tests, such as the Wilcoxon signed-rank test for within-group comparisons and the Mann–Whitney U test for between-group comparisons, were applied. Results: Comparisons between body sides within the groups revealed significant asymmetries in the subscapular skinfold (p = 0.010) in canoeists and in the mid-thigh girth (p = 0.041) in kayakers. Among the groups, differences were found in the subscapular skinfold (p = 0.010) and the bicep skinfold (p = 0.038) on the right side. Conclusions: Although significant differences were found in some variables, no distinctive profile of the differences between canoeists and kayakers was established in the categories analyzed. These results suggest that, in general, body asymmetries do not significantly distinguish between these disciplines within the sample studied. Further research is needed to better understand the implications of these differences for performance and injury prevention in specific adolescent sports contexts. © 2025 by the authors.Ítem Personalised Nutritional Plan and Resistance Exercise Program to Improve Health Parameters in Celiac Women(MDPI, 2022-10) Martínez Rodríguez, Alejandro; Loaiza Martínez, Daniela Alejandra; Sánchez Sánchez, Javier; Rubio Arias, Jacobo Á.; Alacid, Fernando; Prats Moya, Soledad; Martínez Olcina, María; Yáñez Sepúlveda, Rodrigo; Marcos Pardo, Pablo J.Celiac disease (CD) is a permanent immune reaction to gluten in those with a genetic predisposition. This study was designed to evaluate menopause-associated symptoms, mood, bone quality, and IgA antibody levels in women with CD, untreated and treated with a gluten-free diet (GFD), and with or without resistance exercise. The randomised controlled trial was conducted on 28 Spanish women (>40 years old). Participants were divided into the following intervention groups: personalised gluten-free nutrition plan + exercise (GFD + E); personalised gluten-free nutrition plan (GFD); celiac controls (NO-GFD); and non-celiac controls (CONTROL). The participants responded to the Menopause Rating Scale and the Profile of Mood States (POMS) questionnaires. Bone quality was measured with ultrasound and IgA with a blood test. After 12 weeks of intervention, the GFD + E group showed significant improvement in urogenital symptoms and scored higher on the ‘vigour’ subscale of the POMS. Negative associations were found between the total score on the Menopause Rating Scale and the ‘vigour’ subscale of the POMS questionnaire. Only those women who underwent a personalised GFD nutritional intervention combined with resistance exercise demonstrated significant changes after the intervention. © 2022 by the authors.