Cross-sectional comparison of body composition and resting metabolic rate in Premier League academy soccer players: Implications for growth and maturation

ABSTRACT

For the first time we aimed to: (1) assess fat-free mass (FFM) and RMR in youth soccer players, (2) compare measured RMR to estimated RMR using previously published prediction equations, and (3) develop a novel population-specific prediction equation. In a cross-sectional design, 99 males from a Premier League academy underwent assessments of body composition (DXA) and RMR (indirect-calorimetry). Measured RMR was compared to estimated values from five prediction equations. A novel RMR prediction equation was developed using stepwise multiple regression. FFM increased (P<0.05) between U12 (31.6±4.2 kg) and U16 (56.3±5.3 kg) after which no further increases occurred (P>0.05). RMR in the U12s (1655±195 kcal.day^?1), U13s (1720±205 kcal.day^?1) and U14s (1846±218kcal.day^?1) was significantly lower than the U15s (1957±128 kcal.day^?1), U16s (2042±155 kcal.day^?1), U18s (1875±180 kcal.day^?1) and U23s (1941±197 kcal.day^?1) squads (P>0.05). FFM was the single best predictor of RMR (r²=0.43; P<0.01) and was subsequently included in the novel prediction equation: RMR (kcal.day^?1) = 1315 + (11.1 x FFM in kg). Both FFM and RMR increase from 12-16 years old, thus highlighting the requirement to adjust daily energy intake to support growth and maturation. The novel prediction RMR equation developed may help to inform daily energy requirements.     

Student teacher challenges: using the cognitive load theory as an explanatory lens

Cognitive load theory (CLT) can explain the challenges faced by student teachers. This study, guided by the CLT, included 26 pre-service teachers. Participants completed a cognitive load self-report questionnaire and were interviewed at two points during their student teaching. Results revealed that student teachers decreased mental effort related to monitoring their students’ level of attention, meeting needs of diverse learners, and managing internal and external distractions. Qualitative analysis revealed: (1) student teachers became aware of limited cognitive resources; (2) lesson planning imposes cognitive load during student teaching; and (3) cognitive overload limits the ability to make modifications during teaching.     

The “Hand-off” as a Flawed Approach to Disseminating Innovation: Lessons from Chemistry

Drawing on studies of active learning methods in an undergraduate chemistry course at a research institution, we first present two case studies exploring the change processes and outcomes of the faculty member who designed the course and the one who adapted it. We then explore the nature of the problems experienced during the adaptation process. We conclude with recommendations for successfully diffusing innovations: adapting faculty members should choose innovations that genuinely interest them and are aligned with their goals, should experiment with innovations in a gradual way, and should receive support throughout the process.     

Our Language: (Re)Imagining Communities in Ukrainian Language Classrooms

Drawing upon video recordings from two fifth-grade Ukrainian classrooms and interviews with children four years later, this paper examines these classrooms as sites for socializing learners into an imagined community of Ukrainian speakers, the extent to which children took up identities as members of this community, and the potential effect of this identification on willingness to learn and use Ukrainian. Microanalysis of classroom interaction illustrates how teachers drew upon prevailing discourses of language and nation in ways that both presupposed and sought to create children’s membership in an imagined national community whose core practices included affiliation with Ukrainian as “our language.” However, interview data reveal that while children readily aligned with this imagined community and voiced its language ideologies, they positioned themselves as peripheral members or alternatively reimagined an alternative, multilingual Ukrainian community.     

‘Trying to decide … what sort of teacher I wanted to be’: mentoring as a dialogic practice

Mentoring of pre-service teachers in school contexts is acknowledged as an important part of initial teacher education. However, finding sufficient school-based professional experience placements for pre-service teachers, ensuring the quality of the learning experiences provided by such placements, and gaining a clear understanding of what teachers actually learn during placements continue to be of concern to all involved in this component of teacher education. In this paper, three interconnected perspectives are provided as a university-based teacher educator, a school-based teacher educator and a pre-service teacher learn together in a dialogic mentoring relationship. The work of Mikhail Bakhtin and Valentin Voloshinov is employed to theorise the nature of dialogic relationships and how such relationships differ from ‘having a conversation’.     

Developmental trajectories of bullying and associated factors

Trajectories in bullying through adolescence were studied along with individual, family, and peer relationship factors. At the outset, participants' ages ranged from 10 to 14; 74% identified as European Canadian with the remainder from diverse backgrounds. With 8 waves of data over 7 years, 871 students (466 girls and 405 boys) were studied to reveal 4 trajectories: 9.9% reported consistently high levels of bullying, 13.4% reported early moderate levels desisting to almost no bullying at the end of high school, 35.1% reported consistently moderate levels, and 41.6% almost never reported bullying. Students who bullied had elevated risks in individual, parent, and peer relationship domains. Risk profiles and trajectories provide direction for interventions to curtail the development of power and aggression in relationships.     

Interactive or inactive? a consideration of the nature of interaction in whole class teaching

Recent learning theories and the suggested importance of ‘interactive’ approaches in national initiatives, (NLS, NNS) led to an ESRC‐funded action research project involving the University of Exeter and teachers in three schools—‘Using Talk to Activate Learners’ Knowledge' (TALK). This investigated how ‘interactive’ whole class teaching was and whether teacher‐pupil interactions permitted recoding of information and understanding. The findings corroborate those from Galton (1999 Galton M Hargreaves L Comber C Wall D Pell T (1999a) Inside the primary classroom—20 years on (London, Routledge) [Crossref] [Google Scholar]a, 1999 Galton, M, Hargreaves, L, Comber, C, Wall, D and Pell, T. (1999b). Changes in patterns of teacher interaction in primary classrooms: 1976–1996. British Educational Research Journal, 25(1): 23–37. [Taylor & Francis Online] [Google Scholar]b), Mroz (2000 Mroz, M, Smith, F and Hardman, F. (2000). The discourse of the Literacy Hour. Cambridge Journal of Education, 30(3): 379–390. [Taylor & Francis Online] [Google Scholar]) and English (2002 English, E, Hargreaves, L and Hislam, J. (2002). Pedagogical dilemmas in the National Literacy Strategy: primary teachers' perceptions, reflections and classroom behaviour. Cambridge Journal of Education, 32(1): 9–26. [Taylor & Francis Online] [Google Scholar]): that teacher‐led questioning and explanation still dominate, as do teachers' objectives. Interaction as participation was differentially experienced by higher and lower abilities, boys and girls, with few opportunities for pupil initiation or extended response. The study, however, provides a model for more fully analysing the varying forms and functions of teachers' questions and statements which may lead to a greater clarity in recognising ways to provide more effective discourse for learning.     

Gaining ‘Raw Insider Knowledge’: The Benefits and Challenges of International Study Tours for Creative Industries Students

International short‐term study tours are a fast‐growing format for outbound education and provide exciting experiential learning opportunities for students in the creative industries disciplines. This success has encouraged researchers to seek a comprehensive view of the various concrete experiences that contribute to student learning during study tours. To that end, this article presents evidence from a qualitative online post‐tour questionnaire administered with students studying various art and design disciplines who participated in short‐term international study tours at a large Australian university in 2015. Using Kolb's Experiential Learning Theory as a framework, data collected explored student perceptions of which concrete experiences on a study tour are most impactful and which may actually hinder learning. Findings revealed: experiencing key industry venues are the most significant aspects of a study tour, rather than networking or personal growth; poor itinerary planning and travel issues are the least liked aspects of a tour, yet are often the most easily addressed with better tour management and planning; and students were positively impacted by unexpected gains in knowledge about their creative industries discipline. This study, therefore, provides unique insights into which concrete experiences may be most impactful as part of the experiential learning cycle within an international study tour for creative industries students.