Identifying profiles of children at risk of being less physically active: an exploratory study using a self-organised map approach for motor competence

This study aims to develop profiles in children according to physical fitness, actual and perceived motor competence, and to examine the level of engagement in physical activity and weight status according to these profiles. In the study, 156 typically developing Spanish children (47.4% girls) of primary school age (5–11 years-old) participated voluntarily. Children’s perceived and actual motor competence, physical fitness, physical activity participation and weight status were assessed. A Self-Organising Map and K-means cluster analysis were used to classify and visualise the values. Four profiles were found: profile 2 was aligned – high capacity, high perception, profile 1 was partially aligned – medium capacity and perception, profile 3 and 4 were both non-aligned – low capacity, medium perception and medium capacity, low perception; respectively. Children in profile 2 were more active than children in profile 3 and 4 (P < .05). In profile 2 there was a lower frequency of overweight/obese children than normal-weight children. On the contrary, in profiles 1, 3 and 4 a similar distribution of normal-weight and overweight/obese children was found. High capable children with high perception exhibited higher physical activity participation and were more likely to be of normal-weight compared to those with low capacity and/or perception.     

Influence of shod/unshod condition and running speed on foot-strike patterns,inversion/eversion,and vertical foot rotation in endurance runners

The aim of this study was to determine the influence of barefoot running on foot-strike patterns, eversion–inversion, running speed and vertical foot rotation in endurance runners. Eighty healthy recreational runners (age = 34.11 ± 12.95 years old, body mass index = 22.56 ± 2.65 kg · m^?2) performed trials in shod/unshod running conditions on a treadmill at comfortable and competitive self-selected speeds. Data were collected by systematic observation of lateral and back recordings at 240 Hz. McNemar’s test indicated significant differences between shod/unshod conditions and foot strike at comfortable and competitive speeds (P < 0.001). Speed was related to vertical foot rotation type for shod (P < 0.01) and unshod conditions (P < 0.05). Significant differences were found between shod/unshod conditions in foot rotation at comfortable running speeds (P < 0.001) and competitive running speeds (P < 0.01). No significant difference was found in inversion or eversion (P ≥ 0.05). In conclusion, the results suggest that running kinematics, in terms of foot-strike patterns and vertical foot rotation, differ between shod/unshod conditions, while the inversion or eversion degree remains unchanged.     

Relationship between sociometric types and academic achievement in a sample of compulsory secondary education students / Relación entre tipos sociométricos y rendimiento académico en una muestra de estudiantes de Educación Secundaria Obligatoria

Abstract

The aim of this study was to analyse the relationship between sociometric types, behavioural categories and academic achievement in a sample of 1,349 compulsory secondary education students (51.7% boys), ranging in age from 12 to 16 years. The students’ sociometric identification was performed by using the Programa Socio and academic performance was measured by school marks provided by teachers in the subjects of Spanish language, mathematics and average academic performance. The results show that sociometric types were significant predictors of academic achievement, as students who were rated positively by their peers (popular, leaders, collaborators and good students) were more likely to have high academic achievement (in mathematics, Spanish language and average academic achievement) than students rated negatively by peers (rejected-aggressive, rejected-shy, neglected and bullies).     

Definition of the procedure to determine the suitability and durability of an anti-graffiti product for application on cultural heritage porous materials

Anti-graffiti protection is becoming a common practice in many urban buildings, especially in areas of social decay. When Cultural Heritage objects are affected by graffiti, the application of anti-graffiti products can result not only in an unsatisfactory result but also in an irreversible damage of an invaluable cost. The materials commonly found in these constructions are very frequently porous and present different types of decay forms. For this reason, the protection of these materials should be carefully considered. This paper proposes a criterion to decide on the suitability and durability of an anti-graffiti product prior to its application in a porous surface of a protected building. Performance classifications are defined for a series of properties including colour and gloss, and hydric and durability properties, and minimum acceptable values or reductions in these properties are recommended.     

Investigating Image Formation with a Camera Obscura: a Study in Initial Primary Science Teacher Education

Research in Science Education - This article presents the results of a qualitative study aimed at determining the effectiveness of the camera obscura as a didactic tool to understand image...     

A synthesis of research on effectiveness of school-based drug prevention programmes / Claves de eficacia de los programas de prevención de consumo de sustancias en el contexto escolar: una meta-revisión

Abstract

Relevant information on effectiveness of school-based drug prevention programmes is available. Despite this, there is still contradictory evidence that makes it necessary to continue to shed light on this issue. Based on a synthesis research method, the aim of this study was to determine the relevant variables that enhance the efficacy of these programmes and to determine the weight of their empirical evidence. Furthermore, several features of the evaluation designs whose variables had been proven effective were examined. A systematic review of periodical literature was conducted, which led us to extract 1,622 papers, of which 17 studies were analysed. An in-depth analysis of these publications led us to identify 29 key variables associated with the efficacy of the programme, which were ranked according to the weight of their empirical evidence. Moreover, the characteristics of the studies included in the review highlighted the need to improve the rigorousness and quality of the evaluation designs in this field.     

Translanguaging: towards a dynamic model of bilingualism at school / Translanguaging: hacia un modelo dinámico de bilingüismo en la escuela

Abstract

As a response to the trend of using school languages separately, this article puts forward a pedagogical strategy labelled translanguaging which fosters the dynamic and integrative use of bilingual students’ languages in order to create a space in which the incorporation of both languages is seen as natural and teachers accept it as a legitimate pedagogical practice. Thus, translanguaging becomes the process through which bilingual students create meaning while shaping their experiences and increasing their knowledge by using their linguistic and semiotic repertoire without arbitrary separation. After posing the theoretical framework underpinning translanguaging, an experience conducted in a secondary school institute is described, concluding with a specific example of translanguaging in a class activity.     

Gender in teaching: a literature review

Internationally, both in popular and scientific media, debates occasionally emerge concerning the possible (negative) consequences of feminisation tendencies in the teaching staff. In these discussions, various assumptions about the ‘nature’ of male and female teachers and masculinity and femininity are expressed. Male and female teachers are often presumed to differ in teaching styles, capacities and effects on both the teaching profession and the pupils. The arguments used in these debates only seldom refer to particular theoretical grounds or to empirical evidence. Moreover, apart from Sandra Acker’s essay ‘Gender and teachers’ work’ in 1995 Acker, S. 1995. “Gender and teachers’ work”. In Review of research in education, Edited by: Apple, M. W. 99–162. Washington DC: American Educational Research Association. [Crossref] , [Google Scholar], educational research lacks an up‐to‐date review of teacher gender. Therefore, this article aims to provide insight into contemporary theoretical gender perspectives. It also intends to connect these with empirical research that takes teacher gender into account. Most of the research studies referred to in this article do not explicitly state their underlying theoretical principles. Yet, since these studies have distinct research foci, research questions, methodologies and conclusions, they appear to depart from a variety of gender conceptualisations. Therefore, in this article the differences between these conceptualisations will be examined and the divergent theoretical assumptions underlying these studies will be revealed. The two most widespread and disparate perspectives in gender theory are the essentialist perspectives on the one hand and the constructionist perspectives on the other. The differences between them are made up by the degree to which explanations are deterministic and focused on the individual rather than on the social and cultural level. Drawing upon this theoretical contrast, we divided the body of research on teacher gender into two divergent research traditions: sex differences research and gender dynamics research. The research questions, underlying theoretical principles and methodologies of these two traditions are examined.