Efecto de las vibraciones mecánicas en el entrenamiento de fuerza

El trabajo tiene como objetivo el estudio del comportamiento del salto en mujeres no entrenadas ante un entrenamiento en plataforma de vibración mecánica con fines de propiocepción inicial y de fuerza posteriormente. Se estudiaron 14 mujeres no entrenadas. Se utilizó una plataforma vibratoria Zeptor® con dos plataformas oscilatorias.  El entrenamiento se realizó en 2 fases durante 4 semanas (5 días/sem): Fase 1: Entreno de propiocepción (frec. theta: 3,5-7,5 Hz). Fase 2: Entreno de fuerza (frec. alfa: 7,5-12,5 Hz). Se utilizó el test de salto vertical de Lewis que evalúa la potencia anaeróbica aláctica. El test se realizó los días 1, 14 y 28 del periodo de estudio. Se utilizó programa SPSS 11.5 con estadística descriptiva y analítica, con prueba t de Student entre variables de datos pareados. Diferencias estadísticamente significativas para p ≤ 0,05. Se ha observado un aumento significativo (p = 0,049) del salto de la primera (31,52 ± 5,38) a la segunda determinación (33,33 ± 5,47) y un aumento significativo (p = 0,022) del salto de la primera (31,52 ± 5,38) a la tercera determinación (33,59 ± 5,36). El entrenamiento mediante ejercicio en la plataforma de vibración mecánica provoca un aumento del salto por el incremento de la fuerza de los músculos extensores de la rodilla

Steppes, savannahs, forests and phytodiversity reservoirs during the Pleistocene in the Iberian Peninsula

A palaeobotanical analysis of the Pleistocene floras and vegetation in the Iberian Peninsula shows the existence of patched landscapes with Pinus woodlands, deciduous and mixed forests, parklands (savannah-like), shrublands, steppes and grasslands. Extinctions of Arctotertiary woody taxa are recorded during the Early and Middle Pleistocene, but glacial refugia facilitated the survival of a number of temperate, Mediterranean and Ibero-North African woody angiosperms. The responses of Iberian vegetation to climatic changes during the Pleistocene have been spatially and temporarily complex, including rapid changes of vegetation in parallel to orbital and suborbital variability, and situations of multi-centennial resilience or accommodation to climatic changes. Regional characteristics emerged as soon as for the Middle Pleistocene, if not earlier: Ericaceae in the Atlantic coast indicating wetter climate, thermo-mediterranean elements in the south as currently, and broad-leaf trees in the northeastern. Overall, steppe landscapes and open Pinus woodlands prevailed over many continental regions during the cold spells of the Late Pleistocene. The maintenance of a high phytodiversity during the glacials was linked to several refuge zones in the coastal shelves of the Mediterranean and intramountainous valleys. Northern Iberia, especially on coastal areas, was also patched with populations of tree species, and this is not only documented by palaeobotanical data (pollen, charcoal) but also postulated by phylogeographical models

Landscape dynamics and fire activity since 6740 cal yr BP in the Cantabrian region (La Molina peat bog, Puente Viesgo, Spain)

A lack of paleobotanic studies with adequate resolution and multiproxy approaches has limited proper discussion of vegetation dynamics in Cantabria and of the role of fires in the configuration of the plant landscape during the Holocene in the northwest part of the Iberian peninsula. The pollen diagram of La Molina peat bog in Puente Viesgo (43 ‹15 Œ38 N.3 ‹58 Œ37 W; ETRS89), located at 484 m.a.s.l., and the study of its sedimentary charcoals allowed the acquisition of a continuous and thorough fire sequence for the last 6 700 cal yr BP and an understanding of its relationship to the forest. The results show the importance of human influence on the incidence and characteristics of fire activity during the different phases studied: the Neolithic, Bronze Age, Iron Age, Roman period, and Middle Ages. A synergy seems to exist between dry climate periods (especially during Bond events 3 and 4) and a greater presence of biomass. As the Holocene advances, vegetation coverage clearly tends to decrease. This study provides key elements for understanding the role of fire activity in the forest dynamics of deciduous and evergreen Quercus, Corylus, Pinus, Fagus, and Alnus and demonstrates the strongly artificialized character of the present landscape

Clinical and Ecological Impact of an Educational Program to Optimize Antibiotic Treatments in Nursing Homes (PROA-SENIOR): A Cluster, Randomized, Controlled Trial and Interrupted Time-Series Analysis

[Background] Antimicrobial stewardship programs (ASPs) are recommended in nursing homes (NHs), although data are limited. We aimed to determine the clinical and ecological impact of an ASP for NHs.[Methods] We performed a cluster, randomized, controlled trial and a before–after study with interrupted time-series analyses in 14 NHs for 30 consecutive months from July 2018 to December 2020 in Andalusia, Spain. Seven facilities implemented an ASP with a bundle of 5 educational measures (general ASP) and 7 added 1-to-1 educational interviews (experimental ASP). The primary outcome was the overall use of antimicrobials, calculated monthly as defined daily doses (DDD) per 1000 resident days (DRD).[Results] The total mean antimicrobial consumption decreased by 31.2% (−16.72 DRD; P = .045) with respect to the preintervention period; the overall use of quinolones and amoxicillin–clavulanic acid dropped by 52.2% (P = .001) and 42.5% (P = .006), respectively; and the overall prevalence of multidrug-resistant organisms (MDROs) decreased from 24.7% to 17.4% (P = .012). During the intervention period, 12.5 educational interviews per doctor were performed in the experimental ASP group; no differences were found in the total mean antimicrobial use between groups (−14.62 DRD; P = .25). Two unexpected coronavirus disease 2019 waves affected the centers increasing the overall mean use of antimicrobials by 40% (51.56 DRD; P < .0001).[Conclusions] This study suggests that an ASP for NHs appears to be associated with a decrease in total consumption of antimicrobials and prevalence of MDROs. This trial did not find benefits associated with educational interviews, probably due to the coronavirus disease 2019 pandemic.[Clinical Trials Registration] NCT03543605.Peer reviewe

Evolution of the use of corticosteroids for the treatment of hospitalised COVID-19 patients in Spain between March and November 2020: SEMI-COVID national registry

Objectives: Since the results of the RECOVERY trial, WHO recommendations about the use of corticosteroids (CTs) in COVID-19 have changed. The aim of the study is to analyse the evolutive use of CTs in Spain during the pandemic to assess the potential influence of new recommendations. Material and methods: A retrospective, descriptive, and observational study was conducted on adults hospitalised due to COVID-19 in Spain who were included in the SEMI-COVID- 19 Registry from March to November 2020. Results: CTs were used in 6053 (36.21%) of the included patients. The patients were older (mean (SD)) (69.6 (14.6) vs. 66.0 (16.8) years; p < 0.001), with hypertension (57.0% vs. 47.7%; p < 0.001), obesity (26.4% vs. 19.3%; p < 0.0001), and multimorbidity prevalence (20.6% vs. 16.1%; p < 0.001). These patients had higher values (mean (95% CI)) of C-reactive protein (CRP) (86 (32.7-160) vs. 49.3 (16-109) mg/dL; p < 0.001), ferritin (791 (393-1534) vs. 470 (236- 996) µg/dL; p < 0.001), D dimer (750 (430-1400) vs. 617 (345-1180) µg/dL; p < 0.001), and lower Sp02/Fi02 (266 (91.1) vs. 301 (101); p < 0.001). Since June 2020, there was an increment in the use of CTs (March vs. September; p < 0.001). Overall, 20% did not receive steroids, and 40% received less than 200 mg accumulated prednisone equivalent dose (APED). Severe patients are treated with higher doses. The mortality benefit was observed in patients with oxygen saturation </=90%. Conclusions: Patients with greater comorbidity, severity, and inflammatory markers were those treated with CTs. In severe patients, there is a trend towards the use of higher doses. The mortality benefit was observed in patients with oxygen saturation </=90%

Apunts. Educació física i esports

Resumen tomado de la publicaciónSe pretende estudiar el comportamiento del salto en mujeres no entrenadas ante un entrenamiento en plataforma de vibración mecánica con fines de propiocepción inicial y de fuerza posteriormente. Se estudiaron 14 mujeres no entrenadas. Se utilizó una plataforma vibratoria Zeptor con dos plataformas oscilatorias. El entrenamiento se realizó en 2 fases durante 4 semanas (5 días-sem): Fase 1: Entreno de propiocepción. Fase 2: Entreno de fuerza. Se utilizó el test de salto vertical de Lewis que evalúa la potencia anaeróbica aláctica. El test se realizó los días 1, 14 y 28 del periodo de estudio. Se utilizó programa estadístico SPSS 11.5 con estadística descriptiva y analítica, con prueba t de Student entre variables de datos pareados. Se ha observado un aumento significativo del salto de la primera a la segunda determinación y un aumento significativo del salto de la primera a la tercera determinación. El entrenamiento mediante ejercicio en la plataforma de vibración mecánica provoca un aumento del salto por el incremento de la fuerza de los músculos extensores de la rodilla.CataluñaUniversidad Pública de Navarra. Biblioteca; Campus de Arrosadía; 31006 Pamplona; Tel. +34948169060; Fax +34948169069; [email protected]

Efecto de las vibraciones mecánicas en el entrenamiento de fuerza

El trabajo tiene como objetivo el estudio del comportamiento del salto en mujeres no entrenadas ante un entrenamiento en plataforma de vibración mecánica con fines de propiocepción inicial y de fuerza posteriormente. Se estudiaron 14 mujeres no entrenadas. Se utilizó una plataforma vibratoria Zeptor® con dos plataformas oscilatorias. El entrenamiento se realizó en 2 fases durante 4 semanas (5 días/sem): Fase 1: Entreno de propiocepción (frec. theta: 3,5-7,5 Hz). Fase 2: Entreno de fuerza (frec. alfa: 7,5-12,5 Hz). Se utilizó el test de salto vertical de Lewis que evalúa la potencia anaeróbica aláctica. El test se realizó los días 1, 14 y 28 del periodo de estudio. Se utilizó programa SPSS 11.5 con estadística descriptiva y analítica, con prueba t de Student entre variables de datos pareados. Diferencias estadísticamente significativas para p ≤ 0,05. Se ha observado un aumento significativo (p = 0,049) del salto de la primera (31,52 ± 5,38) a la segunda determinación (33,33 ± 5,47) y un aumento significativo (p = 0,022) del salto de la primera (31,52 ± 5,38) a la tercera determinación (33,59 ± 5,36). El entrenamiento mediante ejercicio en la plataforma de vibración mecánica provoca un aumento del salto por el incremento de la fuerza de los músculos extensores de la rodilla

Resistencia contrahegemónica para la transformación escolar en el contexto neoliberal. El caso del instituto de educación secundaria Esmeralda en Andalucía

Educational systems are colonized by a neo-liberal morality. This paper aims to show a disruptive experience of collaborative action research in a middle school on a disadvantaged context of Malaga. From a critical and decolonial approach, the transformations originated in relation to resistance and friction, innovation and participation and inclusion, among other issues, are addressed. Promote interactive and disruptive educational practices, means build a fairer and democratic conception of school.Los sistemas educativos están colonizados por una moral neoliberal. Este artículo tiene como objetivo mostrar una experiencia disruptiva de investigación-acción colaborativa en un centro de educación secundaria de un contexto desfavorecido de Málaga. Desde un enfoque crítico y decolonial se abordan las transformaciones originadas en relación con las resistencias y fricciones, la innovación y la participación e inclusión, entre otras cuestiones. Se promueve pasar a una concepción más justa y democrática de escuela

Optimización de Mezclas fibrosas de Ricinus communis L y Triticum sativum a la Sosa para Papel Corrugado

Se obtuvieron pulpas del tallo de Ricinus communis L. y paja de Triticum sativum para papel corrugado; aplicándose un proceso a la sosa, y su evaluación mediante curvas de refinación. La optimización de mezclas fibrosas (diseño factorial 22) fue a partir de los tiempos óptimos de refinación y propiedades fisicomecanicas. Los factores utilizados fueron 50/50 y 75/25 % y 127 y 150 g/m2. Se formaron hojas estándar para evaluar resistencias fisicomecánicas y propiedades de compresión. Las pulpas de Ricinus communis y Triticum sativum con mejores características físicomecánicas, fueron los tratamientos TH1 y TP1. Los tiempos de refinación óptimos para TH1 y TP1fueron 12 y 4 minutos respectivamente. Las mezclas óptimas se obtuvieron en 75%TH1-25%TP1 y 50%TH1- 50%TP1. Las propiedades físico-mecánicas para 75%TH1-25%TP1 fueron mejores en los índices de explosión 5.14 kPam2/g, tensión 77.5 Nm/g, y rasgado 8.8 Nm2/kg. De acuerdo al diseño factorial (22), las mezclas 75%TH1-25%TP1 y 50%TH1-50%TP1 con gramaje 150 g/m2, tuvieron las mejores propiedades de compresión; CMT 217N y 200N, CCT 0.58kN/m y 0.57 kN/m y RCT 0.28kN/m y 0.25kN, lo cual hace que este tipo de fibra pueda ser viable para papel corrugado.Were obtained pulps from the stem of Ricinus communis L. and Triticum sativum for corrugated paper; to applying a soda process and its evaluation using curves of refining. Optimization of fibrous blends (22 factorial designs) was from the optimal times for refining and physicochemical properties. The factors used were 50/50 and 75/25% and 127 and 150 g/ m2. Standard sheets were formed to assess resistance physicochemical and compression properties. Ricinus communis and Triticum sativum with better physicalmechanical properties were the TH1 and TP1 treatments. The optimal time of refining for TH1 and TP1 was 12 and 4 minutes respectively. Mixtures optimal were reported in 75% TH1-25%TP1 and TH150%-50%TP1. The physical and mechanical properties for TH175%- 25%TP1 were best in explosion index 5.14 kPam2/g, tensile 77.5 Nm/g, and tearing 8.8 Nm2/kg. According to factorial design (22), mixtures TH175%-25%TP1 and 50% TH1-50%TP1 whit weight 150 g/m2, had the best properties of compression; CMT 217N and 200N, CCT 0.58kN/m and 0.57 kN/m, and RCT 0.28kN/m and 0.25kN, which makes this type of fiber can be viable for corrugated paper

Influence of chronic corticosteroids and calcineurin inhibitors on COVID-19 clinical outcomes: Analysis of a nationwide registry.

Objectives: The aim of this study was to analyze whether subgroups of immunosuppressive (IS) medications conferred different outcomes in COVID-19. Methods: The study involved a multicenter retrospective cohort of consecutive immunosuppressed patients (ISPs) hospitalized with COVID-19 from March to July, 2020. The primary outcome was in-hospital mortality. A propensity score-matched (PSM) model comparing ISP and non-ISP was planned, as well as specific PSM models comparing individual IS medications associated with mortality. Results: Out of 16 647 patients, 868 (5.2%) were on chronic IS therapy prior to admission and were considered ISPs. In the PSM model, ISPs had greater in-hospital mortality (OR 1.25, 95% CI 0.99-1.62), which was related to a worse outcome associated with chronic corticoids (OR 1.89, 95% CI 1.43-2.49). Other IS drugs had no repercussions with regard to mortality risk (including calcineurin inhibitors (CNI); OR 1.19, 95% CI 0.65-2.20). In the pre-planned specific PSM model involving patients on chronic IS treatment before admission, corticosteroids were associated with an increased risk of mortality (OR 2.34, 95% CI 1.43-3.82). Conclusions: Chronic IS therapies comprise a heterogeneous group of drugs with different risk profiles for severe COVID-19 and death. Chronic systemic corticosteroid therapy is associated with increased mor-tality. On the contrary, CNI and other IS treatments prior to admission do not seem to convey different outcomes. (C) 2021 The Author(s). Published by Elsevier Ltd on behalf of International Society for Infectious Diseases