Field dimension and skill level constrain team tactical behaviours in small-sided and conditioned games in football

Abstract

This study analysed the influence of field dimension and players’ skill level on collective tactical behaviours during small-sided and conditioned games (SSCGs). Positioning and displacement data were collected using global positioning systems (15 Hz) during SSCGs (Gk+4 v. 4+Gk) played by two groups of participants (NLP- national-level and RLP-regional-level players) on different field dimensions (small: 36.8 × 23.8 m; intermediate: 47.3 × 30.6 and large: 57.8 × 37.4 m). Team tactical performance was assessed through established dynamic team variables (effective playing space, playing length per width ratio and team separateness) and nonlinear signal processing techniques (sample entropy of distances to nearest opponents and the teams’ centroids’ mutual information). Results showed that the effective playing space and team separateness increased significantly with pitch size regardless of participant skill level (P < 0.001, η² = 0.78 and P < 0.001, η² = 0.65, respectively). Playing length per width ratio increased with pitch size for the NLP but was maintained at a relatively constant level by RLP across treatments indicating different playing shapes. There was significantly more irregularity in distances to nearest opponents for the NLP in small (P = 0.003) and intermediate fields (P = 0.01). Findings suggest that tactical behaviours in SSCGs are constrained by field size and skill level, which need to be considered by coaches when designing training practices.     

Communcating emotional support and its relationship to feelings of being understood,trust, and self‐disclosure

The communicating of emotional support would seem to be an aspect of any successful relationship. Additionally, it would seem to reason that how one communicates emotional support would be an aspect of a relationship pertinent to communication research. Unfortunately, there is very little empirical evidence that illuminates how this is related to other relational outcomes such as trust. Weber and Patterson (1996) first developed a measure that taps into how much emotional support one receives from a specific other. In their initial scale development piece the authors validate the Communication Based Emotional Support Scale (CBESS) by finding positive correlations with both relationship solidarity and relationship satisfaction. This current study aimed to further validate the CBESS by exploring its relationship to trust, self‐disclosure, and feelings of being understood.     

Book reviews

DIGITAL SENSATIONS: SPACE, IDENTITY, AND EMBODIMENT IN VIRTUAL REALITY. By Ken Hillis. Minneapolis: University of Minnesota Press, 1999; pp. xi + 271. $47.95 cloth; $18.95 paper.

THOMAS KUHN: A PHILOSOPHICAL HISTORY FOR OUR TIMES. By Steve Fuller. Chicago and London: The University of Chicago Press, 2000; pp. xvii + 472.

PROMETHEUS WIRED: THE HOPE FOR DEMOCRACY IN THE AGE OF NETWORK TECHNOLOGY. By Darin Barney. Chicago: Chicago University Press, 2000; pp. 340. $29.00.

DEWEY ON DEMOCRACY. By William R. Caspary. Ithaca, NY: Cornell University Press, 2000; pp. 256. $39.95.

THE ORGANIZING PROPERTY OF COMMUNICATION. By François Cooren. Philadelphia and Amsterdam: John Benjamins, 2000; pp. 272. $50.00.

CRAFTING SOCIETY: ETHNICITY, CLASS, AND COMMUNICATION THEORY. By Donald G. Ellis. Mahwah: Lawrence Erlbaum Associates, Publishers, 1999; pp. xvi + 229. $49.95.

PROGAY/ANTIGAY: THE RHETORICAL WAR OVER SEXUALITY. Ralph R. Smith and Russel R. Windes. Thousand Oaks, CA: Sage Publications, Inc., 2000; pp. xxiv + 240.

THEORIES OF CULTURE IN POSTMODERN TIMES. By Marvin Harris. Walnut Creek, CA: AltaMira Press, 1999; pp. 224. Cloth $62.00; Paper $22.95.

PRESIDENTIAL CRISIS RHETORIC AND THE PRESS IN THE POST‐COLD WAR WORLD. By Jim A. Kuypers. Westport, CT: Praeger, 1997; pp. xi + 242.     

Perspectives of UK Vice-Chancellors on Leading Universities in a Knowledge-Based Economy

This paper draws upon the experiences and perceptions of ten university vice-chancellors in the United Kingdom on the challenges they face in providing leadership and strategic direction for their institutions into the twenty-first century. The paper reveals the perceptions and spoken words of these leaders as they identify the key challenges shaping higher education, their strategies for addressing these challenges, their struggle to maintain the core mission of universities and finally, implications for the future of higher education.     

The relationship of interest to internal and external motivation

This study was conducted to examine the relationship between student interest and motivation. Previous studies have shown that measures of interest have attained positive relationships with global measures of motivation (Frymier, Shulman & Houser, 1996; Weber & Patterson, 2000). Additionally, even though a number of instructional researchers have speculated that interest is related to motivation through intrinsic means (Brophy, 1983; Mitchell, 1993; Schiefele, 1991; Schraw, Brunning & Svoboda, 1995; Stipiek, 1996; Tobias, 1994), there has been no systematic effort to provide any empirical evidence to these claims. Results indicate that interest is significantly related to intrinsic, but not extrinsic, motivation.     

Inclusion and the special educational needs (SEN) resource base in mainstream schools: physical factors to maximise effectiveness

As a society, we have a responsibility to provide an inclusive built environment. As part of the need to promote inclusion, there is now a growing trend to place pupils with special educational needs (SEN) into a mainstream school setting. This is often facilitated by providing a specialist SEN resource base located within the mainstream school. This article outlines why the whole school should be considered when locating and implementing a SEN resource base. It also highlights the wider opportunities for enhancing inclusion for pupils with SEN when giving holistic thought to the wider context of the resource base. It then indicates a four‐stage approach, using the illustrative example of a pupil with autistic spectrum disorder (ASD), to help evaluate the optimum SEN resource base location within a mainstream school setting. Finally it highlights some benefits and challenges of an enriched school environment for all pupils when considering genuine inclusion.     

A small-scale randomized efficacy trial of Carescapes: Enhancing children’s social development in child care homes

The quality of the child care environment and caregiver practices can potentially have significant, lasting impact on children’s social development. This study involves the development and a small-scale efficacy trial of the Carescapes program, a video-based training program that focuses on promoting positive social development in young children attending family child care. Fifty-seven caregivers who provided child care in their homes were randomly assigned to immediate intervention or waitlist control groups. Random coefficients analyses showed significant increased use of effective behavior management practices and decreased overall children’s problem behavior for the intervention group. A mediation model demonstrated that increases in effective behavior management practices were associated with decreases in problem behavior. A medium intervention effect was found for caregiver’s monitoring and a small effect for use of positive attention. These effects declined 5 months following the intervention. Implications for future efficacy and effectiveness studies in family child care settings that involve strategies to facilitate maintenance are discussed.