La práctica del ciclismo indoor en los mayores: implicaciones metodológicas

Uno de los cambios más característicos de la época tecnológica en la que nos encontramos inmersos, es el envejecimiento de la población y la consecuente inversión de la pirámide poblacional. Dicha inversión, acentúa la necesidad de diseñar y extender planes de actuación que promuevan actividades físico-recreativas continuadas con intensidades, cargas y ejercicios específicos totalmente adaptados a las características de esta población. La propuesta que aquí presentamos se basa en la práctica del ciclo indoor, que representa una experiencia fundamental para el desarrollo integral de la persona. Esta práctica puede considerarse una terapia imprescindible para la estimulación y reeducación de las habilidades concretas de esta población, así como para la adquisición de técnicas de comunicación social, a la vez que realizan una actividad lúdica y placentera. Mediante un programa de actividad física de este tipo, se pretende aumentar las posibilidades funcionales, al tiempo que se mejora las psico-afectivas, y con ello la calidad de vida de nuestros mayores

Determination of the stability of Kollicoat MAE 30D by means of differential scanning calorimetry

Se estudia la estabilidad de Kollicoat MAE 30D mediante determinaciones calorimétricas y microscópicas. Se estudianlos efectos que producen pH, temperatura y agitación sobre las propiedades fi sicoquímicas de las partículas deeste latex comercial. Se comprueba que el factor que mas infl uencia ejerce es el pH, siendo máxima la estabilidad apH ácidos, y modifi cándose con un decrecimiento de la misma, a partir de pH 6. Se determina la forma y tamañode partícula mediante medidas microfotográfi cas de SEM, realizando el recuento de 200 partículas de una muestradel latex previamente desecado. Se comprueba que la dispersión acuosa de Kollicoat MAE 30 D a su pH natural(2.5), da lugar a una población de partículas con un diámetro medio de 1.56 nm.The stability of Kollicoat MAE 30 D was studied with differential scanning calorimetric, and scanning electronmicroscopy. We investigated the effects of pH, temperature and shaking on physicochemical properties of the latexparticles. Stability of the polymer as most strongly affected by pH; hence, we conclude that the stability of this latexreaches a maximum at acid pH values, where as stability is lost to pH 6.The particle shape and the mean diameter were determined by means of SEM microphotographs on 200 particles in asample of dry latex. The aqueous Kollicoat MAE 30 D dispersion, at its natural pH (2.5), presented one population ofparticles with a mean diameter of 1.56 nm

Natural predatory enemies of the erineum strain of Colomerus vitis (Pagenstecher) (Acari, Eriophyidae) found on wild grapevine populations from southern Spain (Andalusia)

The Eurasian wild grapevine, Vitis vinifera L. subspecies sylvestris (Gmelin,) Hegi constitutes a dioecious relative of cultivated grape varieties. It constitutes an important phytogenetic resource, threatened by human activities. The most frequent phytophagous species on this European wild vine is the erineum strain of Colomerus vitis (Pagenstecher) (Acari, Eryophyidae). The aim of the present paper is to identify the natural enemies of the cited mite in wild grapevine populations situated in southern Spain. Results indicated that such kind of predatory biocenosis is integrated by Phytoseiidae (Euseius stipulatus, Kampimodromus sp., Neoseiulella litoralis, Phytoseiulus persimilis, Typhloseiella isotricha, Typhlodromus phialatus, Typhlodromus rhenanoides), Tydeidae (Orthotydeus caudatus,Tydeus caudatus), and dipteran, Cecidomyiidae (Arthrocnodax vitis).

Assessment of pollen dimorphism in populations of Vitis vinifera L. subsp. sylvestris (Gmelin) Hegi in Spain

A comparative scanning electron microscopy study and biometric analysis of pollen of 14 Spanish Vitis vinifera L. subsp. sylvestris (Gmelin) Hegi populations was performed. In all the investigated populations pollen grains show a marked degree of dimorphism. Pollen grains from male flowers are prolate spheroidal and tricolporate in shape, while the pollen grains from female flowers are spheroidal to oval, unaperturate, with no colpi.

Formative and shared assessment in the initial training of physical education teachers: Results after four years of implementation in a Chilean Public University

La transición desde un modelo de enseñanza tradicional a uno competencial ha supuesto un gran cambio de paradigma en la formación universitaria chilena. Trabajar con el alumnado como centro del proceso de Enseñanza-Aprendizaje (E-A) obliga a replantear muchos elementos que intervienen en dichos procesos, especialmente la Evaluación. El objetivo del estudio es conocer la percepción del alumnado tras la aplicación de sistemas de Evaluación Formativa y Compartida en cuatro asignaturas de una universidad chilena. Se llevó a cabo bajo un enfoque cuantitativo en una muestra de 111 estudiantes de Formación Inicial del Profesorado en Educación Física, que participó de cuatro asignaturas que utilizaron sistemas de Evaluación Formativa y Compartida durante cuatro años seguidos. Son las siguientes: curso 2014, asignatura “prácticum” (Edad 24.1 +- 1.8); curso 2015, asignatura “Actividad Física y Salud para Grupos Especiales” (Edad 22 +- 2.2); curso 2016, asignatura “Gasto Energético y Antropometría” (Edad 23 +- 1.9); y, curso 2017, asignatura “Gasto Energético y Antropometría” (Edad 23.2 +- 2.1). Los principales resultados muestran altas valoraciones a los ítems correspondientes a “ventajas del sistema de evaluación” y bajas valoraciones a los ítems que se presentan como reales inconvenientes de un sistema de evaluación. Se pudo apreciar una alta valoración a los sistemas de evaluación utilizados, así como la presencia de elementos de Evaluación Formativa y Compartida en la Formación Inicial del Profesorado de la universidad en la que se realizó el estudioThe transition from a traditional model to a competency model has meant a great paradigm shift in Chilean university education. Replace the teaching staff with the students at the center of the Teaching-Learning (E-A) process forces us to rethink many elements that intervene in such processes, including assessment. The objective of the study is to know the perception of the students after the application of Formative and shared Assessment in four subjects from a Chilean university. It was carried out under a quantitative approach in a sample of 111 students (23.2 +- 2.1), the sample corresponded to students of Initial Teacher Training in Physical Education who participated in four systems of Formative and shared Assessment implemented in 2014 in the "practicum" (Age 24.1 +- 1.8); 2015 in the subject "Physical Activity and Health for Special Groups" (Age 22 +- 2.2); 2016 in the subject "Energy Expenditure and Anthropometry" (Age 23 +- 1.9) and 2017 in the subject "Energy Expenditure and Anthropometry" (Age 23.2 2.1). The main results show high valuated to the items corresponding to "advantages of the Assessment system" and low valuated to the items that are presented as real inconvenient of an Assessment system. It was possible to appreciate a high valuation to the Assessment systems used, as well as the presence of elements of formative and shared Assessment in the Pre-service Physical Education Training of the university where the study was carried ou

Resurgence of minor pests following the implementation of mating disruption against Lobesia botrana (Denis & Schiffermüller) (Lepidoptera, Tortricidae) in Sherry vineyards (Spain)

The implementation of the mating disruption technique against the grape berry moth, Lobesia botrana (Denis and Schiffermüller) (Lepidoptera, Tortricidae), in Integrated Pest Management (IPM) Sherry vineyards (Andalusia, South-western Spain) reduced the number of chemical treatments required to manage this serious pest. In order to verify the long term consequences of this type of management on the minor pests of vineyards, a study was carried out over nine years to compare the population levels of four phytophagous insect species (Altica ampelophaga, Planococcus citri, Jacobiasca lybica, Aphis gossypii) in plots where L. botrana was managed with conventional chemical treatments or using mating disruption. Field data on secondary pests were collected on randomly chosen vines at different times on different plant organs such as leaves, shoots and bunches, depending on the type of pest, according to the ATRIA procedure (Andalusian IPM procedure). Results showed a significant increase of grapevine infestation by all four secondary pest species in the plots managed with grape berry moth mating disruption. These findings represented a limitation for the implementation of this technique in Andalusian vineyardsWe want to thank J. L. Jiménez García, Academia de San Dionisio de Ciencias, Artes y Letras of Jerez de la Frontera; J. Alcón González, Servicio de Protección de los Vegetales of Jerez de la Frontera and AECOVI JERE

Quantification of proteome changes in bovine muscle from two-dimensional electrophoresis data

Proteome changes in the longissimus thoracis bovine muscle in response to pre-slaughter stress were assessed on the basis of two-dimensional electrophoresis (2-DE) data. In this study, the bootstrap resampling statistical technique and a new measure of relative change of the volume of 2-DE protein spots are shown to be more efficient than commonly used statistics to reliably quantify changes in protein abundance in stress response. The data are supplied in this article and are related to "Tackling proteome changes in the longissimus thoracis bovine muscle in response to pre-slaughter stress" by Franco et al. [1]

Xenobiotics that affect oxidative phosphorylation alter differentiation of human adipose-derived stem cells at concentrations that are found in human blood

Adipogenesis is accompanied by differentiation of adipose tissuederived stem cells to adipocytes. As part of this differentiation, biogenesis of the oxidative phosphorylation system occurs. Many chemical compounds used in medicine, agriculture or other human activities affect oxidative phosphorylation function. Therefore, these xenobiotics could alter adipogenesis. We have analyzed the effects on adipocyte differentiation of some xenobiotics that act on the oxidative phosphorylation system. The tested concentrations have been previously reported in human blood. Our results show that pharmaceutical drugs that decrease mitochondrial DNA replication, such as nucleoside reverse transcriptase inhibitors, or inhibitors of mitochondrial protein synthesis, such as ribosomal antibiotics, diminish adipocyte differentiation and leptin secretion. By contrast, the environmental chemical pollutant tributyltin chloride, which inhibits the ATP synthase of the oxidative phosphorylation system, can promote adipocyte differentiation and leptin secretion, leading to obesity and metabolic syndrome as postulated by the obesogen hypothesis

Relic wild grapevines in Extremadura (Spain)

Relic wild grapevine populations (Vitis vinifera L. subsp. sylvestris (C.C.Gmel.) Hegi), were surveyed in Extremadura region (Spain). Twenty-two populations were found along river bank forests in Badajoz and Cáceres provinces. The main ampelographical characteristics and phenology of vines and the incidence of parasites were evaluated. Supporting flora has been botanically characterized. Results confirmed the dioecious characteristic of this grapevine subspecies and showed that Colomerus vitis (Pagenstecher) (Acari, Eriophyiidae) mite and powdery and downy mildews are the main parasites affecting their populations