Power training in elite young soccer players: Effects of using loads above or below the optimum power zone

ABSTRACT

This study aimed to examine the effects of two jump squat (JS) training programs involving different loading ranges in under-20 soccer players during a preseason period. Twenty-three elite young soccer players performed sprint speed (at 5-, 10-, and 20-m), change-of-direction (COD) speed, JS peak-power (PP), and countermovement jump (CMJ) tests pre and post four weeks of training. Athletes were pair-matched in two groups according to their optimum power loads (OPL) as follows: lower than OPL (LOPL; athletes who trained at a load 20% lower than the OPL) and higher than OPL (HOPL; athletes who trained at a load 20% higher than the OPL). Magnitude-based inferences were used to compare pre- and post-training measures. Meaningful increases in the PP JS were observed for both groups. Likely and possible improvements were observed in the 5- and 10-m sprint velocity in the LOPL group. Meanwhile, possible and likely improvements were observed in the CMJ, 5- and 10-m sprint velocity, and COD speed in the HOPL group. Overall, both training schemes induced positive changes in athletic performance. Soccer coaches and sport scientists can implement the JS OPL-based training schemes presented here, either separately or combined, to improve the physical performance of youth soccer players.     

On the temporal and behavioural consistency of pre-performance routines: an intra-individual analysis of elite basketball players' free throw shooting accuracy

The effectiveness of pre-performance routines on skilled performance in a self-paced skill has yet to be verified. In this study, we examine the importance of temporal and behavioural consistency in these routines. The duration and specific pattern of behaviours exhibited before each free throw (n = 284) were observed during 14 National Basketball Association play-off games. An intra-individual standardized score was calculated for each shot's duration. Each player's dominant behavioural routine was identified and each shot was classified as "sequence followed" or "sequence not followed". No difference was observed in the success rates of shots associated with brief, long, and regular duration routines (P > 0.05). However, players were more successful when they followed their dominant behavioural sequence (83.77% success) than when they deviated from their specific behavioural pattern (71.43% success) (P < 0.05). The findings are interpreted in light of relevant theory and implications for practice are discussed.     

The performance environment of the England youth soccer teams

In the present study, we examined the performance environment of the England youth soccer teams. Using a semi-structured protocol with a prospective sample, national coaches (n = 6), sport scientists (n = 3), and players (n = 4) were interviewed directly following international tournaments about the factors that positively and negatively influenced performance. Qualitative content analysis revealed the following factors as major positive influences on performance: adhering to a consistent tournament strategy, player understanding, strong team cohesion, organized entertainment activities, detailed knowledge of opposition, an effective physical rest/recovery strategy, and previous tournament experience. Major factors perceived to have negatively influenced performance included: over-coaching, player boredom, player anxiety, physical superiority of the opposition, physical fatigue over the tournament, problems sleeping, and lack of information on the opposition. Eight overall dimensions emerged to describe the performance environment: planning and organization, physical environment, tactical factors, development and performance philosophy, psychological factors, physical factors, social factors, and coaching. The findings support recent work that suggests the performance environment is multifaceted, with performance being contingent upon a broad range of interacting factors that go beyond the traditional psychosocial and physical domains.     

Professional Football in Apartheid South Africa: Leisure,Consumption and Identity in the National Football League, 1959–1977

A growing body of academic and popular literature considers the history of South African football. These and existing publications pay little or no attention to the emergence of white professional football in apartheid South Africa. The National Football League (NFL) challenged the amateur game and introduced professional football to the country. During its 17-year existence, the NFL grew each season with large attendances until its demise in 1977. In addition, the NFL imported a range of international players, invited foreign teams and actively engaged in the political debates in South African sport at the time. The NFL was instrumental in popularising the game across the country for all South Africans. The NFL became the most popular sports entertainment of choice for South Africans during this period. Finally, the NFL actively engaged in a campaign of destroying rival non-racial anti-apartheid leagues while simultaneously co-opting less progressive organisations.     

Giving up technology and social media: why university lecturers stop using technology in teaching

University lecturers use a wide range of technologies when teaching and there has been much research into how particular technologies are adopted. However, there are also many technologies that, despite early promise, are no longer being used in university teaching and have been abandoned by institutions or individuals. This article presents the results of a qualitative investigation into why university lecturers stop using technology. It used detailed episodic narrative interviews to explore the experiences of lecturers using technology in their teaching at three UK universities. While the data provides examples of technologies that were discarded as they became outdated and were replaced by new devices, this was not the only reason that technologies are rejected. The data also demonstrated that even relatively up-to-date or innovative technologies or practices (e.g. the use of Facebook) may be abandoned. The article discusses the participants’ experiences of ceasing to use technology and demonstrates the importance of context in decisions about using technology and social media in teaching. The article argues that studies of technology adoption should be accompanied by research that revisits the sites of these studies to consider how the implementation of technology continues over time and how it comes to an end.     

Achievement effects of multigrade and monograde primary schools in the Turks and Caicos Islands

This article reports on a study that compares the reading progress of students in multigrade schools with the reading progress of students in monograde schools. The research was conducted in a small island state in the Caribbean. The results of the study indicate that multigrade schools are particularly effective at promoting the reading progress of low-achieving students. It is hypothesised that this is partly because of differences in the approach to instruction in multigrade and monograde classrooms. Whereas monograde classrooms tend to be characterised by undifferentiated whole-class teaching, in multigrade classes students have more opportunity to engage in small-group work. The implications of the findings are explored for policy, practice and research.     

Do physical activity beliefs differ by age and gender?

Age and gender are consistently related to physical activity (PA), yet theoretical explanation for these associations is scant. The present study compared the mean values and correlations of a population sample, divided by gender and age group, with respect to theory of planned behavior beliefs (behavioral, normative, and control) and PA. Participants were a sample (N=6,739) of adults (M age=49.65, SD=16.04) who completed measures of social and health demographics, theory of planned behavior beliefs, and self-reported PA. Mean analyses identified greater perceived control over PA for seniors than for young and middle-aged adults (N>.025). Belief-behavior correlations, however, were not different across age and gender in 24 of 26 tests (q<.19). Thus, PA beliefs are invariant across age and gender with the exception of mean levels of perceived control, which are lower among younger adults than older adults. Factors such as early parenthood and career demands were considered the likely reasons for differences. Overall, the evidence suggests that adapting theoretical models for specific age groups or based on gender may not be necessary.     

Preservice teachers’ views of global citizenship and implications for global citizenship education

Global citizenship (GC) is becoming increasingly significant as a desirable graduate attribute in the context of increasing globalisation and cultural diversity. However, both the means and ends of GC education are influenced by a divergent range of conceptualizations. The aim of this research project was to investigate preservice teachers’ understandings of global citizenship, with a particular focus on cultural diversity. Pre-service teachers (PSTs) participated in interviews, and findings indicated that they were uncertain about the idea of global citizenship, sought harmony and a desire for sameness in culturally diverse relationships, and held ethnocentric, paternalistic and salvationist views about the ‘Other’. Drawing on these findings, we present a framework incorporating technicist, humanistic and postcritical conceptions as a tool for analysis of GCE approaches, their means and ends.