Application of velocity loss thresholds during free-weight resistance training: Responses and reproducibility of perceptual,metabolic, and neuromuscular outcomes

ABSTRACT

The aim of this study was to investigate the differences and long-term reliability in perceptual, metabolic, and neuromuscular responses to velocity loss resistance training protocols. Using a repeated, counterbalanced, crossover design, twelve team-sport athletes completed 5-sets of barbell back-squats at a load corresponding to a mean concentric velocity of ~0.70 m·s^?1. On different days, repetitions were performed until a 10%, 20% or 30% velocity loss was attained, with outcome measures collected after each set. Sessions were repeated after four-weeks. There were substantial between-protocol differences in post-set differential ratings of perceived exertion (dRPE, i.e., breathlessness and leg muscles, AU) and blood lactate concentration (B[La], mmol·L^?1), such that 30%>20%>10% by small to large magnitudes. Differences in post-set countermovement jump (CMJ) variables were small for most variables, such that 30%<20%<10%. Standard deviations representing four-week variability of post-set responses to each protocol were: dRPE, 8–11; B[La], 0.8–1.0; CMJ height, 1.6–2.0; CMJ PPO, 1.0–1.8; CMJ PCV, 0.04–0.06; CMJ 100ms-Impulse, 5.7–11.9. Velocity loss thresholds control the magnitude of perceptual, metabolic, and neuromuscular responses to resistance training. For practitioners wanting to reliably prescribe training that can induce a given perceptual, metabolic, or neuromuscular response, it is strongly advised that velocity-based thresholds are implemented.     

The diffusion of ideas in the academy: A quantitative illustration from economics

It has long been recognised in policy discussion that the influence of new ideas depends not just on their generation but also on the way in which they diffuse through society. However, while the spread of new ideas in industry has been much studied, there are no similar quantitative studies on diffusion within the academy. This paper addresses that gap by providing quantitative evidence on the adoption of two techniques for empirically testing hypotheses in economics. On the basis of this evidence, and contrary to a common expectation, the spread of ideas seems neither straightforward nor especially rapid in the academy.     

Indigenous graduate research students in Australia: a critical review of the research

Over the last decade, there has been a steady increase in the number of Indigenous graduate research students in Australia, yet research and pedagogy has not kept pace with changes underway in the sector. From an extensive search of literature published between 2000 and 2017, 15 papers (representing 10 research projects conducted by seven teams or authors) were identified that addressed Indigenous graduate research student experience. Overall, the literature tends to focus on identifying barriers to completion, noting in particular the impact of financial difficulties, social isolation and racism. A research degree is a key site for the assertion and legitimation of Indigenous knowledges, and it is here that Indigenous students are navigating tensions between legitimated disciplinary practices of the centre and the peripheral status of Indigenous knowledges. We, therefore, adopt Herbert's ‘centre–periphery’ model to interpret the research, arguing that this framework explains the focus on barriers, the neglect of pedagogy centred on academic excellence and student strengths, and research relationships between students and Indigenous communities. Our review identifies the need for a systematic research agenda specifically focused on Indigenous student success at the graduate research level, and looking internationally in order to assess the performance and strategies of Australian higher education providers in comparison to international institutions meeting the aims of First Nations research communities. This approach, we suggest, should move beyond an analysis of the nature of enablers and barriers to focus on Indigenous Higher Degree by Research success.     

Moving beyond enhancing pedagogies with digital technologies: Frames of reference,habits of mind and transformative learning

Abstract

Digital technologies are a part of schooling, however, given the significant focus on using of digital technologies in teaching and learning, there is little evidence of wide scale transformation. It is within this context that this paper reports on a qualitative, explanatory case study of six teachers, with experience in enhancing pedagogies in a well-established ubiquitous technologies environment, consciously seeking to transform their practice to enact personalized digital learning. The findings indicate three interacting factors contributed to the degrees of transformation: teachers’ frames of reference (beliefs and attitudes), habits of mind (prior experience), and modes of transformative learning. This paper highlights how diversification of classroom roles, relationships and actions created challenges for teachers with experience integrating digital technologies in teaching and learning.     

Parenting and Beyond: Common Neurocircuits Underlying Parental and Altruistic Caregiving

Interpersonal relationships constitute the foundation on which human society is based. The infant-caregiver bond is the earliest and most influential of these relationships. Driven by evolutionary pressure for survival, parents feel compelled to provide care to their biological offspring. However, compassion for non-kin is also ubiquitous in human societies, motivating individuals to suppress their own self-interests to promote the well-being of non-kin members of the society. We argue that the process of early kinship-selective parental care provides the foundation for non-exclusive altruism via the activation of a general Caregiving System that regulates compassion in any of its forms. We propose a tripartite structure of this system that includes (1) the perception of need in another, (2) a caring motivational or feeling state, and (3) the delivery of a helping response to the individual in need. Findings from human and animal research point to specific neurobiological mechanisms including activation of the insula and the secretion of oxytocin that support the adaptive functioning of this Caregiving System.     

The (mis)use of SATs to examine gender and achievement at Key Stage 2

ABSTRACT

This article discusses some of the issues raised in the early stages of an Economic and Social Research Council (ESRC) study. ¹ 1 Gender and Learning: A Study of Underachievement in Junior Schools, Economic and Social Research Council R000237346. Project directors: Harry Daniels, Valerie Hey, Diana Leonard and Marjorie Smith. The first phase of the project involved an analysis of end of Key Stage 2 (children aged 10–11) Standard Assessment Test (SAT) data within a Midlands and a London local education authority (LEA(M) and LEA(L) respectively). The LEAs were identified according to the quality and accessibility of the data and their socio‐economic and socio‐cultural diversity. The analysis was used as an instrument for selecting schools in each LEA that displayed specific but con‐ sistent patterns of high, low and average achievement which were cross cut by large differences between boys' and girls' achievement in all three SAT subjects (English, maths and science). On one level, this article discusses the difficulties we encountered in identifying schools with consistent patterns of gendered achievement as well as signposting the ‘political’ significance of these difficulties for present and future edu‐ cation policies. On another level, it is a vehicle for the development of the theoretical lenses of learner identity and post‐Vygotskian analysis that have shaped our under‐ standing of gendered achievement which we use to ‘speak’ to and influence the development of the test procedures highlighted in this article.

     

Rhetorical imperialism and Sun‐Tzu's art of war: A response to combs’ rhetoric of parsimony

This essay discusses how Wesker conveys his central intuition about the limitations of language by employing verbal and visual games and rituals that function as narrative, analogue, symbol, and subtext in The Trilogy. These games take the form of playfulness to indicate emotional solidarity, of everyday rituals with archetypal or religious undertones, or of games about the acquisition of language itself.     

Relational Framing Theory: Utterance Form and Relational Context as Antecedents of Frame Salience

Using relational framing theory, this article examines the influence of utterance type and relational context on the salience of relational frames. The authors report the results of two studies that used scenarios to manipulate utterance form and information about the relationship between interactants. Participants rated the relevance of dominance-submissiveness and affiliation-disaffiliation frames to interpreting the hypothetical interactions. Results showed that judgments of dominance-submissiveness frame salience were sensitive to variations in utterance type and relational context, but the results were mixed for the affiliation-disaffiliation frame. The authors discuss the implications for relational framing theory and the possibility of an affiliation bias.