Mediating effects of resistance training skill competency on health-related fitness and physical activity: the ATLAS cluster randomised controlled trial

The purpose of this study was to examine the mediating effect of resistance training skill competency on percentage of body fat, muscular fitness and physical activity among a sample of adolescent boys participating in a school-based obesity prevention intervention. Participants were 361 adolescent boys taking part in the Active Teen Leaders Avoiding Screen-time (ATLAS) cluster randomised controlled trial: a school-based program targeting the health behaviours of economically disadvantaged adolescent males considered “at-risk” of obesity. Body fat percentage (bioelectrical impedance), muscular fitness (hand grip dynamometry and push-ups), physical activity (accelerometry) and resistance training skill competency were assessed at baseline and post-intervention (i.e., 8 months). Three separate multi-level mediation models were analysed to investigate the potential mediating effects of resistance training skill competency on each of the study outcomes using a product-of-coefficients test. Analyses followed the intention-to-treat principle. The intervention had a significant impact on the resistance training skill competency of the boys, and improvements in skill competency significantly mediated the effect of the intervention on percentage of body fat and the combined muscular fitness score. No significant mediated effects were found for physical activity. Improving resistance training skill competency may be an effective strategy for achieving improvements in body composition and muscular fitness in adolescent boys.     

Defining the nature of blended learning through its depiction in current research

ABSTRACT

Blended learning has been a feature of higher education practice and research for almost two decades. This article takes stock of current blended learning research, contributing to the growing number of meta-analyses of higher education and blended learning research more generally, through a review of ninety-seven articles relating to blended learning in higher education published in fifteen journals between 2012 and mid-2017. The review focused on where and when the articles were published; their provenance, scale, scope; methodological approach; the broad research themes; and definition of blended learning used. The review shows that despite its ubiquity, blended learning’s definition is all-encompassing; its spread is global but research is dominated by key players; it is of technical interest; and its research is small-scale, individually focused, seeking to evidence the benefits of blended learning. The article concludes with recommendations of how higher education research could provide institutions with evidence to ensure their ‘best of blends’.     

Opening classroom interaction: the importance of feedback

Efforts to encourage ‘interactive practice’ in the National Literacy (NLS) and Numeracy (NNS) Strategies in the UK, have led to an emphasis on teacher questions. Recent research into classroom interactions, however, indicate that the pattern of interaction remains largely unchanged since the introduction of these strategies in terms of the type and amount of questions teachers are asking, and the opportunities for extended pupil participation. This article uses evidence gathered from a large‐scale research project examining classroom interactions during literacy and numeracy lessons, and the researchers' critical reflections upon this process, to examine conceptions of interactive pedagogy. It is argued that in order to ‘open’ classroom interaction, emphasis should be less on the questions teachers ask, and more on the manner with which teachers react to pupils' responses to questions. Episodes of classroom interaction from video recorded literacy and numeracy lessons taken as part of the study are used to support this argument. They present evidence of teacher behaviours in reaction to pupils' responses which succeed in facilitating a more interactive learning environment. The implication that such behaviour will contribute towards a model of effective interactive practice is also discussed.     

Identification of Alcohol by Smell among Preschoolers: Evidence for Early Socialization about Drugs Occurring in the Home

This study tested preschoolers' ability to provide accurate verbal associations to alcoholic beverage odors and whether this ability was related to parental drinking patterns and motivations. Older preschoolers performed better than younger preschoolers; photographic cues improved performance; children who correctly identified a substance by smell had socially appropriate knowledge of the culturally appropriate users of the substance; children reported liking substances that are used mainly by children and adults, and generally reported disliking substances whose use is legally limited to adults only; children were better at identifying substances they commonly use, but success at recognition of alcoholic beverages was related to heavier parental drinking and use of alcohol for escape reasons. Findings have implications for theories of socialization to drug use and for models of prevention.     

Contemporary Scientists and their Interactions with Non-Scientists: Alternative Companion Stories for School Curricula

Research in Science Education - Students learn more than science knowledge in a science classroom; they also acquire important messages about the purposes and contexts of science. Roberts (2011)...     

Inexpensive Options for a High-Tech Learning Environment

Radford University was recently configured with a campus-wide wireless local area network. Using these new capabilities, a classroom-based Honors section of Concepts of Biology was conducted solely using electronic technologies (paper was never transferred from professor to student). To accomplish this, students used common software and freeware. Commercial versions of similar software are designed solely for academic use, however, here the students were trained to use software and technologies that will be available to them once leaving the institution. Overall, students in this course responded favorably to the use of technology and reported that it aided in their learning process.