Effects of 6-month soccer and traditional physical activity programmes on body composition,cardiometabolic risk factors,inflammatory, oxidative stress markers and cardiorespiratory fitness in obese boys

Physical activity is important in obesity prevention, but the effectiveness of different physical activity modalities remains to be determined among children. The main purpose of this study was to compare the effects of a 6-month soccer programme and a traditional physical activity programme on changes in body composition, cardiometabolic risk factors, inflammatory and oxidative markers, cardiorespiratory fitness and perceived psychological status in obese boys. Eighty-eight boys (8–12 years; BMI > +2 standard deviations of WHO reference values) participated in one of three groups: soccer, traditional activity and control. Soccer and traditional activity programmes involved 3 sessions per week for 60–90 min at an average intensity of 70–80% of maximal heart rate. Control group participated in activities of normal daily living. All boys participated in school physical education, two sessions per week of 45–90-min. Measurements were taken at baseline and after 6 months, and included body size and composition, cardiometabolic risk factors, inflammatory and oxidative markers, cardiorespiratory fitness and perceived psychological status. Physical activity and dietary intake were assessed before and immediately following the intervention. The three groups had similar characteristics at baseline. After 6 months, both intervention groups had significantly lower relative fatness (% fat), waist circumference and total cholesterol, and higher cardiorespiratory fitness, self-esteem, perceived physical competence and attraction to physical activity compared with control group. In conclusion, physical activity interventions over 6 months positively influenced several indicators of health status among obese boys. The results also suggested that soccer has the potential as an effective tool for the prevention and reduction of childhood obesity and associated consequences.     

The peak velocity derived from the Carminatti Test is related to physical match performance in young soccer players

ABSTRACT

The aim of this study was to examine the relationship between the peak velocity derived from the Carminatti Test (T-CAR) (PV_T-CAR) and physical match performance in young soccer players. Thirty-three youth soccer players were recruited from 2 non-professional clubs. Friendly matches and small-sided game were performed. Physical match demands were assessed using Global Positioning System (GPS) technology. On a separate occasion, the players were submitted to the T-CAR. Players were categorised into 3 groups based on their T-CAR performance: Low (PV_T-CAR ≤ P33), Intermediate (P33 > PV_T-CAR < P66) and High (PV_T-CAR ≥ P66). The PV_T-CAR (15.5 ± 0.7 km·h^?1) was significantly related to high-intensity activities (HIA; r = 0.78, P < 0.001), high-intensity running (HIR; r = 0.66, P < 0.001), sprinting (r = 0.62, P < 0.001) and total distance (TD) covered (r = 0.47, P < 0.01) during friendly matches. The PV_T-CAR was strongly correlated with the amount of HIA (r = 0.81, P < 0.001), HIR (r = 0.85, P < 0.001) and TD covered (r = 0.81, P < 0.001) during small-sided game. No significant correlation was observed between the PV_T-CAR and distance of sprinting (r = 0.49, P = 0.067) during small-side game. Furthermore, players in the High group covered significantly more TD (10%) and did more HIA (42%), sprinting (31%) and HIR (25%) during friendly matches compared to the players classified as having Low performance on the T-CAR. These differences still remained after adjusting for chronological age (CA), maturity and body size. In conclusion, the current study gives empirical support to the ecological and construct validity of this novel field test (T-CAR) as an indicator of match-related physical performance in young soccer players during pubertal years.     

Effects of an intervention programme with teachers on the development of positive behaviours in Spanish physical education classes

Background: The physical education (PE) context has been emphasised as an ideal environment for developing positive behaviours among students. Under the Positive Youth Development paradigm, various initiatives have been conducted with the aim of promoting personal and social responsibility among adolescents. Self-Determination Theory has been widely used to analyse students’ motivational processes during PE classes.

Purpose: This study aimed to measure the effects of a multidisciplinary intervention with teachers on the development of positive behaviours in PE classes.

Participants: Twenty PE teachers participated in the study (M_age?=?35 years; SD?=?2.32) along with 777 of their students (M_age?=?12.81 years; SD?=?.93). The teachers (male?=?16; female?=?4) were between the ages of 29 and 48 years (M?=?35.2 years; SD?=?2.32). The students who participated in this study (male?=?377; female?=?400) were divided into 52 classes and were between the ages of 12 and 16 years (M?=?12.81; SD?=?.93).

Research design: A quasi-experimental design was used that consisted of a control group and three groups in which an intervention was developed. In the control group, the teachers did not receive any type of intervention; in the second group, the teachers received a training programme to develop strategies for supporting basic psychological needs and promoting positive behaviours; in the third group, the teachers received a didactic unit to promote positive behaviours; and in the last group the teachers received a combination of the two previous interventions.

Data analysis: A repeated-measures ANCOVA (analysis of covariance) was used for every dependent variable included in the study to analyse the effect of Group?×?Time interaction, including Gender and Grade Level as covariates. The fixed effects caused by Intercept, Group, Time, and the Group?×?Time interaction were calculated using compound symmetry as the type of covariance and restricted maximum likelihood as the estimation method.

Findings: By examining the differences between pre-test and post-test, it was determined that in comparison with the students in the control group, the students from the three experimental groups had generally improved scores on the variables related to positive behaviours, such as perceptions of the teacher's support, as well as the development of the targeted behaviours.

Conclusions: These results provide information about the efficacy of an intervention programme with teachers that consists of strategies for developing positive behaviour and support for basic psychological needs to promote the development of positive student behaviour.     

The impact of the university context on European students' learning approaches and learning environment preferences

This article describesexperiences of 610 Dutch students and 241students from other European countries whostudied at least three months abroad within theframework of an international exchange program.The Dutch students went to a university inanother European country and the foreignstudents went to a Dutch university. By meansof a questionnaire students' perceptions ofthree main characteristics of the universitylearning environment were measured concerningthe home university, the host university andthe ideal learning environment. The studentswere also asked about their way of learning atthe home university and at the host university,in particular about the extent of constructivelearning and reproductive learning. Evidencewas found for the influence of aspects of thelearning environment on the two learningapproaches; e.g., a learning environmentcharacterized as student-oriented discouragesreproductive learning and promotes constructivelearning, especially when conceptual andepistemological relations within the learningdomain are stressed. The learning environmentpreferences of the students were partly relatedto their learning orientations at the homeuniversity, but they were strikingly similarfor students from different countries. Therewas a strong preference for those learningenvironment aspects that promote constructivelearning.     

The influence of core teaching conceptions on teachers' use of inquiry teaching practices

This article investigates three teachers' conceptions and use of inquiry‐based instructional strategies throughout a professional development program. The professional development program consisted of a 2‐week summer inquiry institute and research experience in university scientists' laboratories, as well as three academic year workshops. Insights gained from an in‐depth study of these three secondary teachers resulted in a model of teacher conceptions that can be used to direct future inquiry professional development. Teachers' conceptions of inquiry teaching were established through intensive case–study research that incorporated extensive classroom observations and interviews. Through their participation in the professional development experience, the teachers gained a deeper understanding of how to implement inquiry practices in their classrooms. The teachers gained confidence and practice with inquiry methods through developing and presenting their institute‐developed inquiry lessons, through observing other teachers' lessons, and participating as students in the workshop inquiry activities. Data analysis revealed that a set of four core conceptions guided the teachers' use of inquiry‐based practices in their classrooms. The teachers' conceptions of science, their students, effective teaching practices, and the purpose of education influenced the type and amount of inquiry instruction performed in the high school classrooms. The research findings suggest that to be successful inquiry professional development must not only teach inquiry knowledge, but it must also assess and address teachers' core teaching conceptions. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 1318–1347, 2007     

Overcoming a Learning Bottleneck: Inquiry Professional Development for Secondary Science Teachers

This paper examines the summer component of a year-long professional development program. The program was developed based on recent models of effective professional development that indicate that teachers should guide the direction and focus of the professional development program. Specific activities in the summer program were adapted from a long-running, successful program for university faculty development. In this study we explore the conceptions of inquiry teachers developed during the program, as well as the products teachers created. The discrepancies between program goals and the teachers’ products and conceptions are described and reasons for these differences explored. The results suggest that engaging teachers in identifying key issues in their own professional development is an effective strategy.     

The recent process of decentralization and democratic management of education in Brazil

Brazilian society is beginning a new historical period in which the principle of decentralization is beginning to predominate over centralization, which held sway during the last 25 years. In contrast to recent Brazilian history, there is now a search for political, democratic and participatory decentralization more consonant with grass-roots aspirations. The first section of this article presents a brief analysis of some decentralization policies implemented by the military regime of 1964, and discusses relevant facts related to the resistance of civil society to state authoritarianism, and to the struggle for the democratization and organization of civil society up to the end of the 1970s. The second section analyzes some new experiences of democratic public school administration initiated in the 1970s and 1980s. The final section discusses the move toward decentralization and democratization of public school administration in the new Federal and State Constitutions, and in the draft of the new Law of National Education.

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Zusammenfassung Die brasilianische Gesellschaft beginnt einen neuen Abschnitt in ihrer Geschichte, in dem das Prinzip der Dezentralisierung über die in den letzten 25 Jahren vorherrschende Zentralisierung dominiert. Im Gegensatz zur jüngsten brasilianischen Geschichte wird nunmehr eine politische, demokratische und partizipatorische Dezentralisierung gesucht, die mit den regionalen Bestrebungen besser vereinbar ist. Der erste Teil dieses Artikels enthält eine kurze Analyse einiger 1964 vom Militärregime eingeführter Dezentralisierungmaßnahmen und untersucht relevante Fakten, die mit dem Widerstand der zivilen Gesellschaft gegen die Staatsgewalt und mit dem Kampf um Demokratisierung und eine Organisation der zivilen Gesellschaft bis Ende der 70er Jahre zusammenhängen. Im zweiten Teil werden einige neue Erfahrungen den in der 70er und 80er Jahren eingeführten Verwaltung öffentlicher demokratischer Schulen analysiert. Im Schlußteil geht es um die Entwicklung zur Dezentralisierung und Demokratisierung der öffentlichen Schulverwaltung in den neuen Bundes- und Staatsverfassungen und im Entwurf des neuen Gesetzes zu Nationaler Bildung.

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Résumé La société brésilienne entame une nouvelle ère historique caractérisée par une prédominance du principe de décentralisation sur celui de centralisation, qui a prévalu durant les 25 dernières années. Par comparaison à l'histoire brésilienne moderne, on vise actuellement une décentralisation politique, démocratique et fondée sur la participation, qui soit plus en harmonie avec les aspirations du peuple. La première partie du présent article contient une brève analyse des politiques de décentralisation appliquées par le régime militaire de 1964, et discute les faits pertinents relatifs à la résistance de la société civile à l'autoritarisme de l'Etat, et à la lutte pour la démocratisation et l'organisation de la société civile jusqu'à la fin des années 70. La deuxième partie analyse quelques expériences récentes concernant la démocratisation de l'administration de l'école publique, inaugurée dans les années 70 et 80. La dernière partie examine le passage à la décentralisation et à la démocratisation dans l'administration de l'école publique dans la nouvelle constitution fédérale et dans celles des Etats fédérés, ainsi que dans le nouveau projet de loi sur l'Education nationale.

     

The new educational pluralism in Latin America

Conclusion Education is, however, already beginning to reflect the whole range of pluralisms that constitute the relatively complex, urbanized and semi-industrialized societies of most of Latin America.Modernity in these societies assumes the form of cultural pluralism with a centrifugal and fragmented social basis, in which deep divisions of class and social strata still exist alongside emerging tensions due to the spread of markets, privatization in civil society, the disintegration of the traditional state, the rapid internationalization of communications and expectations, and the consolidation of liberal-democratic regimes that enable all this diversity to be expressed more freely.The new pluralism of Latin American education has therefore more to do with the modernization of societies and their cultures than with the more restrictive notion of complementarity among well-structured socio-cultural elements that fight to preserve their identity and that attain a form of expression recognized by the state in the field of education. The latter type of pluralism, found in more stable and better structured societies, is replaced in Latin America by a more fluid and ambiguous educational pluralism which, in the final analysis, reflects a process of construction of modernity that began only recently but is now in full swing. Specialist in the sociology of education. Professor-researcher at the Latin American Faculty of Social Sciences (FLACSO), vice-president of the Chilean Higher Council of Education, where he chaired the Presidential Study Commission on Higher Education. Member of the Executive Committee of the Latin American Social Sciences Council. His most recent books are: Educación superior en América latina: cambios y desafíos (1990), Chile: transformaciones culturales y modernidad(1989), and Recursos humanos para la investigación en América latina (1989).     

Cognitive,Motivational, and Volitional Dimensions of Learning: An Empirical Test of a Hypothetical Model

The principal aim of this research is to contrast empirically a hypothetical model developed on the basis of the fundamental assumptions of current self-regulated learning models. In line with evaluation criteria of model fit, a high rate of congruence between the hypothesized theoretical model and the empirical data was observed. Analysis of the effects between the variables of the model revealed the following relevant aspects: students' predisposition to feel responsible for the results of their academic behavior (internal attribution) is related to positive self-image (academic self-concept), both being important conditions for development of learning-oriented motivation (learning goals). All of this involves selection and use of learning strategies for deep information processing (deep learning strategies), which leads students to assume responsibility with high levels of persistence, perseverance, and tenacity so as to achieve goals defined by the motivational orientation. This persistence and effort to achieve the proposed goals has in turn a positive and significant effect on academic achievement.