Acceleratory match-play demands of a Super Rugby team over a competitive season

The match-play demands of rugby union have increased over time, and these demands should be quantified so as to provide a basis for optimal player loading during training. The primary aim of this article was to quantify accelerations, decelerations, impacts and aggregated body demands during the first half of match-play in a Super Rugby team. The secondary aim was to determine whether these characteristics are position-specific. Thirty-three players were monitored for 14 matches using global positioning system units with inbuilt microtechnology. Players were grouped according to positional roles and data were analysed for those who completed the entire duration of the first half of a given match. Forwards sustained more (d = 0.44) high-intensity impacts and greater (d = 0.26) aggregated body demands, while backs had more moderate (d = 0.55) and heavy accelerations (d = 0.76), and moderate (d = 0.23) and heavy decelerations (d = 0.54). These differences suggest that conditioning and recovery strategies should reflect the physical demands placed on players in different playing positions. Forwards should be conditioned with a focus on impacts and require longer recovery for the same duration of playing time, whereas conditioning for backs should emphasise rapid accelerations and decelerations.     

A comparison of two methods for the calculation of accumulated oxygen deficit

The aim of this study was to compare accumulated oxygen deficit data derived using two different exercise protocols with the aim of producing a less time-consuming test specifically for use with athletes. Six road and four track male endurance cyclists performed two series of cycle ergometer tests. The first series involved five 10 min sub-maximal cycle exercise bouts, a VO2peak test and a 115% VO2peak test. Data from these tests were used to estimate the accumulated oxygen deficit according to the calculations of Medb? et al. (1988). In the second series of tests, participants performed a 15 min incremental cycle ergometer test followed, 2 min later, by a 2 min variable resistance test in which they completed as much work as possible while pedalling at a constant rate. Analysis revealed that the accumulated oxygen deficit calculated from the first series of tests was higher (P < 0.02) than that calculated from the second series: 52.3 +/- 11.7 and 43.9 +/- 6.4 ml x kg(-1), respectively (mean +/- s). Other significant differences between the two protocols were observed for VO2peak, total work and maximal heart rate; all were higher during the modified protocol (P < 0.01 and P < 0.02, respectively). Oxygen kinetics were also significantly faster during the modified 2 min maximal test. We conclude that the difference in accumulated oxygen deficit between protocols was probably due to a reduced oxygen uptake, possibly caused by a slower oxygen on-response during the 115% VO2peak test in the first series, and VO2-power output regression differences caused by an elevated VO2 during the early stages of the second series.     

Cross‐field effects and temporary social fields: a case study of the mediatization of recent Australian knowledge economy policies

This paper utilizes Bourdieu’s conceptual frame to examine the mediatized effects of policy processes concerned with the growth and support of knowledge industries in Australia. These policies span education, science, research and other knowledge industries (such as venture capital firms and intellectual property law). The paper argues that some policy processes are best represented as temporary social fields. The nature of these fields can be described by the kinds of cross‐field effects that they produce. A case study of an Australian knowledge economy policy, The chance to change, and associated policy processes demonstrates the broad analytic capacities of Bourdieu’s conceptual frame for policy analysis, when combined with the concepts of cross‐field effects and temporary social field developed here.     

Understanding equity as an asset to national interest: developing a social contract analysis of policy

Alongside the influence of market-based reforms in education policy has been the growth of policy that has largely been overlooked – those that outline social contracts. This paper draws on policies that connect with equity as a way of illustrating this social contract turn in policy and develops a conceptualisation of social contracts as they apply to education policy. The argument provides three principles that underpin social contracts, including informed consent, negotiation and accountability. This paper applies these principles to three levels of social contract. At the first level are broad social contracts, which are associated with debates about the kinds of things that states should expect from its citizens, and the things that citizens could expect from governments and the state. The second level of social contract is an institutional or field-based social contract, which spells out the obligations and connections between a specific field and other fields. This level names a kind of social contract that is often exemplified in policies or statements by specific institutions. The third level of social contract deals with contract-like mechanisms embedded in fields that make tangible the obligations and expectations of citizens in fulfilling the expectations of fields.     

Career choices and characteristics of African-American undergraduates majoring in criminal justice at historically black colleges and universities

Recent research has shown that African-Americans at historically black colleges and universities (HBCUs) have increasingly selected criminal justice/criminology as their field of study and career choice (Gabbidon and Penn 1999). To explore this trend, the authors replicated the work of Krimmel and Tartaro (1999) by surveying 284 undergraduate criminal justice majors at several HBCUs; the study was designed to investigate whether the students' reasons for selecting criminal justice as a major and career choice were in line with those of the earlier study conducted at predominantly white institutions. Our findings show that, while students at the two types of universities seem to select criminal justice as a major for the same reasons-including the interesting nature of the subject matter and its relevance to the real world-undergraduates at HBCUs reported stronger attitudes towards entering the career for economic as well as for altruistic reasons such as protecting the Constitution, fighting oppression, and helping people solve problems.     

Undistributing Work Through Writing: How Technical Writers Manage Texts in Complex Information Environments

This article presents findings from a recent study of mediated writing in a technical writing firm to examine distributed work conditions and how they affect the practices of individual technical writers. Distribution of labor, texts, and technologies for producing documentation creates complex information environments that writers must negotiate. In doing so, they practice two kinds of expertise central to technical writing as a profession—technological and rhetorical skill. This article examines how those skills are affected by distributed work.     

Exploring learning goals and assessment approaches for Indigenous health education: a qualitative study in Australia and New Zealand

In higher education, assessment is key to student learning. Assessments which promote critical thinking necessary for sustained learning beyond university are highly valued. However, the design of assessment tasks to achieve these types of thinking skills and dispositions to act in professional practice has received little attention. This research examines how academics design assessment to achieve these learning goals in Indigenous health education. Indigenous health education is an important area of learning for health practitioners to help address worldwide patterns of health inequities that exist for Indigenous people. We used a constructivist qualitative methodology to (i) explore learning goals and assessment strategies used in Indigenous health tertiary education and (ii) examine how they relate to higher education assessment ideals. Forty-one academics (from nine health disciplines) involved in teaching Indigenous health content participated in a semi-structured interview. Thematic analysis revealed learning goals to transform students’ perspectives and capacities to think critically and creatively about their role in Indigenous health. In contrast, assessment tasks encouraged more narrowly bounded thinking to analyse information about historical and socio-cultural factors contributing to Indigenous health. To transform students to be critical health practitioners capable of working and collaborating with Indigenous people to advance their health and well-being, the findings suggest that assessment may need to be nested across many aspects of the curriculum using a programmatic approach, and with a focus on learning to think and act for future practice. These findings accord with more recent calls for transformation of learning and assessment in health education.     

The Development of Nonsymbolic Probability Judgments in Children

Two experiments were designed to investigate the developmental trajectory of children's probability approximation abilities. In Experiment 1, results revealed 6- and 7-year-old children's (N = 48) probability judgments improve with age and become more accurate as the distance between two ratios increases. Experiment 2 replicated these findings with 7- to 12-year-old children (N = 130) while also accounting for the effect of the size and the perceived numerosity of target objects. Older children's performance suggested the correct use of proportions for estimating probability; but in some cases, children relied on heuristic shortcuts. These results suggest that children's nonsymbolic probability judgments show a clear distance effect and that the acuity of probability estimations increases with age.