DeustoTeka
DeustoTeka recoge la producción científica del personal docente e investigador de la Universidad de Deusto. Su propósito es reunir, archivar, preservar y aumentar la visibilidad en acceso abierto de los resultados de investigación.
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Long-term effect of combination of creatine monohydrate plus β-hydroxy β-methylbutyrate (HMB) on exercise-induced muscle damage and Anabolic/Catabolic hormones in elite male endurance athletes
(MDPI AG, 2020-01-15) Fernández de Landa, Julen; Fernández Lázaro, Diego; Calleja González, Julio; Caballero García, Alberto; Córdova Martínez, Alfredo; León Guereño, Patxi; Mielgo Ayuso, Juan
Creatine monohydrate (CrM) and β-hydroxy β-methylbutyrate (HMB) are widely studied ergogenic aids. However, both supplements are usually studied in an isolated manner. The few studies that have investigated the effect of combining both supplements on exercise-induced muscle damage (EIMD) and hormone status have reported controversial results. Therefore, the main purpose of this study was to determine the effect and degree of potentiation of 10 weeks of CrM plus HMB supplementation on EIMD and anabolic/catabolic hormones. This study was a double-blind, placebo-controlled trial where participants (n = 28) were randomized into four different groups: Placebo group (PLG; n = 7), CrM group (CrMG; 0.04 g/kg/day of CrM; n = 7), HMB group (HMBG; 3 g/day of HMB; n = 7), and CrM-HMB group (CrM-HMBG; 0.04 g/kg/day of CrM plus 3 g/day of HMB; n = 7). Before (baseline, T1) and after 10 weeks of supplementation (T2), blood samples were collected from all rowers. There were no significant differences in the EIMD markers (aspartate aminotransferase, lactate dehydrogenase, and creatine kinase) among groups. However, we observed significant differences in CrM-HMBG with respect to PLG, CrMG, and HMBG on testosterone (p = 0.006; η2p = 0.454) and the testosterone/cortisol ratio (T/C; p = 0.032; η2p = 0.349). Moreover, we found a synergistic effect of combined supplementation on testosterone (CrM-HMBG = −63.85% vs. CrMG + HMBG = −37.89%) and T/C (CrM-HMBG = 680% vs. CrMG + HMBG = 57.68%) and an antagonistic effect on cortisol (CrM-HMBG = 131.55% vs. CrMG + HMBG = 389.99%). In summary, the combination of CrM plus HMB showed an increase in testosterone and T/C compared with the other groups after 10 weeks of supplementation. Moreover, this combination presented a synergistic effect on testosterone and T/C and an antagonistic effect on cortisol compared with the sum of individual or isolated supplementation.
Assessment of tug of war pullers’ competition intensity and physiological response at the 2019 European Championship
(Federación Española de Asociaciones de Docentes de Educación Física (FEADEF), 2022-04-01) Castañeda Babarro, Arkaitz; Gutiérrez Santamaría, Borja; Coca Núñez, Aitor; Calleja González, Julio; Cayero Alcorta, Ruth
Tug of war (TOW) involves 2 teams of eight people, pulling against each other on a rope. The main goal of TOW is to pull the opposing team towards a centre line over a distance of 4 m. The measurement of physiological parameters is key to understanding the demands of an activity and to identifying its limiting performance factors. The main aim of this study was to evaluate the intensity and effort demands of TOW pullers during competition, as follows: Data were collected from 7 male pullers (Height: 175.14±4.85; Body Mass: 77.39±3.92; Age: 39.86±11.68; %Fat: 17.56±5.21; VO2max: 44.24±8.38) in the 560 kg category. The blood lactate concentrations (LAC) were assessed before and at the end of each pull, and the global rating of perceived exertion (RPE) at the end of the pulls. The following week, pullers performed a graded exercise test (GXT). Heart rate, LAC and RPE were assessed before, during and at the end of the GXT to calculate the individual anaerobic threshold. The mean blood lactate concentrations recorded at the end of the pulls (6±1.9 mmol/l) were 32% higher than the mean values recorded for the individual anaerobic threshold intensity (4.1±0.5 mmol/l). For their part, the mean RPE values of athletes after the pulls (6±1.5 mmol/l) were 21% lower than those obtained for intensity of the individual anaerobic threshold (7.6±0.8 mmol/l). The intensity and effort response are greater and kept above the anaerobic threshold during the competition in TOW pullers.
Desarrollando un nuevo modelo para la gobernanza colaborativa: evidencias desde el programa Etorkizuna Eraikiz, País Vasco, España
(Aranzadi, 2020) Barandiarán Irastorza, Xabier
; Restrepo Montoya, Natalia
; Unceta Satrústegui, Alfonso
Cities, Health, and Well-Being
(Springer Suiza, 2024) Ibarluzea Maurolagoitia, Jesús María; Arbillaga Etxarri, Ane
; Fernández de Larrinoa Palacios, Pedro P.; Araolaza Arrieta, Maialen
; Kayı, İlker; Sakarya, Sibel
Urbanisation has become one of the global trends of the current development of humanity, especially in cities marked by a transition connected with societal restructuring. At the beginning of the twentieth century, about 10% of the world’s population were living in urban areas, but this rate expanded to about 54% in 2015, and is predicted to reach 60% in 2030 and 66% by 2050 (World Health Organization & UN-Habitat, 2016).
La relación entre la administración pública y el tercer sector guipuzcoano a debate: ¿uno o varios modelos ante la heterogeneidad del sector?
(Centro Internacional de Investigación e Información sobre la Economía Pública, Social y Cooperativa, CIRIEC, 2021-12-02) Izaguirre Choperena, Ainhoa; Sánchez Salmerón, Víctor; Zuñiga, Martín
El Tercer Sector ocupa un rol central en los Estados de Bienestar europeos contribuyendo a dar respuesta a diversidad de necesidades sociales que se producen en su seno. En el contexto actual, los Estados de Bienestar europeos están convergiendo hacia modelos descentralizados y de gestión multinivel de las políticas sociales, generando que los modelos regionales de bienestar muestren gran variabilidad en su gobernanza y entramado institucional posibilitando la creación de distintos modelos de relación entre la administración pública y el Tercer Sector. En el caso de Gipuzkoa, el papel asumido por los distintos actores da cuenta de las dimensiones sustantivas y operativas de la relación entre la administración pública y el Tercer Sector. Este debate se ha visto además avivado por la necesidad de adecuar las respuestas colectivas ante la brecha social generada por las crisis recientes. Este artículo analiza los discursos y demandas que se formulan desde el propio sector partiendo de la premisa de que las preferencias y posicionamientos sobre cómo debe ser la interrelación entre ambas partes dependen de la percepción en torno a las principales fuentes de tensiones y conflictos. Para ello, se ha llevado a cabo un estudio cualitativo de caso en el que se han realizado 34 entrevistas semiestructuradas en profundidad a informantes clave tanto del Tercer Sector como de la administración pública, poniendo especial interés en identificar cuáles son las claves sobre las que se producen las relaciones público-privadas en el territorio de Gipuzkoa y cuáles deberían de ser a futuro.