Effectiveness during ball screens in elite basketball games

Ball screens are one of the most frequently used tactical behaviour in elite basketball games. The aim of the present study was to identify their predictors of success related to time, space, players, and tasks performed. The sample was composed of 818 ball screens corresponding to 20 close games (mean differences in score of 3.1 ± 0.8 points) randomly selected from the playoff games of the Spanish Basketball League (2008–2011). Classification tree analysis (CHAID) was used to analyse which variable or combination of variables, better predicts effectiveness during ball screens. The main results allowed identifying interactions with dribbler actions after the screen and the orientation of the screen on the ball. The results showed no interaction with game quarter and quarter minute temporal-related variables in both analyses. The present findings allow improving coaches’ strategic plans that involve selecting the most appropriate offensive approach when performing ball screens.     

Making It Fit: Reshaping Library Services and Spaces for Today's Students

University course assignments increasingly focus on group work and group projects to help students collaboratively discover more about their fields of study. The Thomas G. Carpenter Library realized the need to investigate means for reimagining itself to better accommodate today's researchers. The complex process of planning for the redesign of both services and space undertaken by the library is described and explained in this first of a planned series of articles.     

Deconstructing the Metanarrative of the 21st Century Skills Movement

Abstract

If Neil Postman, were alive today, what would he say to Prensky, the originator of the term, ‘digital native’, about the ways in which teachers should approach the wonders and perils of e-learning in their classrooms? As the Dean of a faculty of education which is devoted to both creating and critiquing a variety of digital teaching and learning strategies in K-12 and adult education contexts, I have kept a close eye on the developing metanarrative of the twenty-first century skills movement. Arguments and anecdotes from the movement’s proponents concerning teachers’ technological accountability and competencies are attractive and compelling to some educators at the same time as they are oppressive and disturbing to others. In order to deconstruct the technophilic discourses of Prensky, Trilling, and Fadel, I juxtapose their work with Postman’s cautionary tales about totalitarian technocracy in schools. Postman wants educators to question their taken-for-granted assumptions about the ways in which they and their students should interact with technology. Prensky and his followers wish to provide educators with effective ways to involve their students in experiential learning partnerships through the use of serious gaming, e-books, crowdsourcing, and Facebook. As the views of Prensky and Postman are contrasted, a number of interesting issues emerge. What, for instance, is the nature of moral development and cultural identity formation when collective intelligence, hypertexts, and virtual relationships displace traditional textbook and face-to-face modes of learning? In this article, therefore, I attempt to synthesize the opposing perspectives of Prensky and Postman in order to establish a balanced and yet critical theory of the nature of e-learning.     

The effects of exercise in hypoxic and normoxic conditions on endothelin-1 and arterial compliance

The purpose of this study was to determine the effects of short-term normoxic and hypoxic exercise on plasma endothelin-1 and nitric oxide levels, and the relationship of arterial compliance and pulmonary artery pressure to endothelin-1. Seven endurance-trained males completed two incremental and two steady-state exercise tests performed at ventilatory threshold in normoxia and hypoxia (fraction of inspired oxygen = 0.14). Plasma endothelin-1was measured throughout steady-state tests. Arterial compliance using applanation tonometry, plasma nitric oxide and pulmonary artery pressure using Doppler echocardiography were measured before and after exercise. Small arterial compliance and pulmonary artery pressure significantly increased following exercise. There were no main effects of condition or time for plasma endothelin-1and nitric oxide levels. There were no significant relationships between plasma endothelin-1 and arterial compliance or pulmonary artery pressure. In conclusion, mechanisms other than the endothelial system may play a role in the exercise-induced changes in small artery compliance in this study population. Moderate hypoxia and a 30-minute steady-state exercise have limited effects on plasma endothelin-1 in endurance-trained males.     

Physical education teaching as a caring act—techniques of bodily touch and the paradox of caring

In this article, we investigate ‘no touch policies’ as a practical teacher concern that includes the body as a location, a source and a means in educational activity. We argue that to understand issues regarding physical touch within school practice we must conceive it as deeply associated with specific teaching techniques. Thus, the didactical challenge is not found in argumentations about the pro and cons of physical touch, but through analysis of how teachers handle student interaction and teaching intentions.

We consider teaching as a caring profession. Caring, as a practical teacher concern, requires wisdom regarding the right time to use bodily touch and to refrain from such use. This wisdom involves the ability to discern people’s needs, desires, interests and purposes in particular situations and act appropriately. From a body pedagogical perspective we approach intergenerational touch not only as a discursive and power-related question but as an essential tension in the intersection of the; ambiguity attendant to any intentional act such as teaching, the conflict between the ethics of care and the ethics of justice, and finally, the paradox of caring.

We draw on interviews with PE-teachers in Swedish primary, secondary and upper-secondary schools and analyses of a collection of techniques of bodily touch that are established and practiced with specific pedagogical purposes. The results shows PE teacher’s competence in handling different functions of intergenerational touch in relation to three different techniques of bodily touch; (1) Security touch, which is characterized by intentions to handle the fragile; (2) Denoting touch, which is characterized by intentions to handle learning content and (3) Relational touch, which is characterized by caring intentions. Each of these is of importance for the teachers in carrying out their call to teach and each of these relies on professional assessments whether or not it meets its intended purpose.     

Effectiveness of peers in delivering programs or motivating older people to increase their participation in physical activity: Systematic review and meta-analysis

The objective of this systematic review and meta-analysis was to evaluate the effectiveness of peers to deliver programs or encourage older people to be physically active and improve physical outcomes. Peer reviewed articles published in English between January 1976 and June 2016, retrieved from six databases according to the predefined inclusion criteria were included. Where possible results were pooled and meta-analyses conducted. Eighteen articles were included in the review, a total of 3,492 intervention participants, average age 66.5 years and 67.1% were female. Overall, study quality was medium to high. Interventions mainly included resistance, flexibility and cardiovascular training, however there was one aquatic exercise group. Eight studies were delivered by peers and five utilised peer support, which included advice and being positive but was not directly linked to an exercise intervention. While 16 of the 18 studies reported improvement in levels of physical activity and/or noted physical benefits by peer involvement, the meta-analyses findings supported the control groups for the six-minute-walk-test and the timed-up-and-go test. Findings from this review suggest exercise programs involving peers can promote and maintain adherence to exercise programs. However, results were inconclusive as to whether peers have a positive effect on improving older people’s physical function.