Optimizing training adaptations by manipulating glycogen

For decades, glycogen has been recognized as a storage form of glucose within the liver and muscles. Only recently has a greater role for glycogen as a regulator of metabolic signalling been suggested. Glycogen either directly or indirectly regulates a number of signalling proteins, including the adenosine-5'-phosphate- (AMP-) activated protein kinase (AMPK) and p38 mitogen-activated protein kinase (MAPK). AMPK and p38 MAPK play a significant role in controlling the expression and activity of the peroxisome proliferator activated receptor γ coactivators (PGCs), respectively. The PGCs can directly increase muscle mitochondrial mass and endurance exercise performance. As low muscle glycogen is generally associated with greater activation of these pathways, the concept of training with low glycogen to maximize the physiological adaptations to endurance exercise is gaining acceptance in the scientific community. In this review, we evaluate the scientific basis for this philosophy and propose some practical applications of this philosophy for the general population as well as elite endurance athletes.

Healthy settings : past, present and future

Based on previously published work and data from elite interviews, this thesis identifies four challenges for settings-based health promotion - clarifying theory; building bridges; reconfiguring for the 21st century; and promoting a culture of evaluation, learning and development. It concludes by mapping future directions for health settings research, policy and practice.

Relationship between inflammatory cytokines and self-report measures of training overload

It has been purported that inflammatory cytokines may be responsible for the aetiology of overtraining. The aim of the present study was to investigate the relationship between self-reported measures of overtraining and inflammatory cytokines. Eight elite male rowers were monitored in their natural training environment for 8 weeks prior to the 2007 Rowing World Championships. During this period of intense endurance training, self-report measures of overtraining and inflammatory cytokines (Interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-12p70, and Tumor Necrosis Factor (TNF)-) were assessed fortnightly. Consistent with previous findings, proinflammatory cytokines IL-1β and TNF- were significantly associated (p ≤ 0.05) with measures of depressed mood, sleep disturbances, and stress. Similarly, IL-6 was significantly associated (p ≤ 0.01) with measures of depressed mood, sleep disturbances, and fatigue. These results are consistent with previous hypotheses describing how overtraining may be caused by excessive cytokine release, and lend further support for a cytokine hypothesis of overtraining.

Impact of training on changes in perceived stress and cytokine production

Data on training of competitive athletes and the inflammatory response, and, more specifically, the utility of psychological inventories to monitor this response in regards to overreaching is limited. The aim of the present study was to investigate the association of the Perceived Stress Scale (PSS) and inflammatory markers in elite rowers. Eight rowers (males n = 4; females n = 4) were monitored over an 8-week training period, comprising 12 sessions each week and training an average 3.11 h·d-1. Training volume was periodized weekly while intensity was maintained throughout the study. Perceived stress was measured weekly pretraining, and capillary blood samples (500 μL) were taken post-training. Significant associations between perceived stress and cytokines interleukin-6 (p < .05) and tumor necrosis factor alpha (p < .05) were observed. While further investigation of the role of cytokines in the overtraining process is required, these data provide preliminary support for an association between perceived stress and the inflammatory responses to training.

Obstacles in the optimization of bone health outcomes in the female athlete triad

Maintaining low body weight for the sake of performance and aesthetic purposes is a common feature among young girls and women who exercise on a regular basis, including elite, college and high-school athletes, members of fitness centres, and recreational exercisers. High energy expenditure without adequate compensation in energy intake leads to an energy deficiency, which may ultimately affect reproductive function and bone health. The combination of low energy availability, menstrual disturbances and low bone mineral density is referred to as the ‘female athlete triad’. Not all athletes seek medical assistance in response to the absence of menstruation for 3 or more months as some believe that long-term amenorrhoea is not harmful. Indeed, many women may not seek medical attention until they sustain a stress fracture.
This review investigates current issues, controversies and strategies in the clinical management of bone health concerns related to the female athlete triad. Current recommendations focus on either increasing energy intake or decreasing energy expenditure, as this approach remains the most efficient strategy to prevent further bone health complications. However, convincing the athlete to increase energy availability can be extremely challenging.
Oral contraceptive therapy seems to be a common strategy chosen by many physicians to address bone health issues in young women with amenorrhoea, although there is little evidence that this strategy improves bone mineral density in this population. Assessment of bone health itself is difficult due to the limitations of dual-energy X-ray absorptiometry (DXA) to estimate bone strength. Understanding how bone strength is affected by low energy availability, weight gain and resumption of menses requires further investigations using 3-dimensional bone imaging techniques in order to improve the clinical management of the female athlete triad.

Carbohydrate intake strategies to enhance endurance exercise performance

While elite Olympic distance triathletes consume adequate carbohydrate pre-competition, many fail to meet suggested guidelines during actual competition. Furthermore, metabolic adaptations that occur in response to training appear similar under varying conditions of carbohydrate availability. However, daily training with high carbohydrate availability increases the use of carbohydrate consumed during exercise.

Complicating hetero-femininities : young women, sexualities and girl power at school

This paper is concerned with expanding knowledge of how femininity/sexuality intersections are constituted in secondary schools. Existing studies have drawn upon Judith Butler’s notion of a ‘heterosexual matrix’ in order to understand how intersections of femininity/sexuality are produced in schools through normative discourses of heterosexuality and gender. Drawing on ‘after-queer’ theoretical resources from within cultural studies that focus on the deployment of notions of sexuality within constructions of intelligible citizenship, I explore how the femininity/sexuality intersection within secondary schools might be complicated, when the significance of discourses of ‘girl power’, linked with successful neoliberal citizenship, is considered. I analyse young women’s discussions of key ‘girl power’ icons in popular culture, generated through fieldwork in an elite girls’ school in Australia. Throughout the analysis I explore how understanding intersections of femininity/sexuality in secondary schools requires an analytical framework that can attend to both familiar notions of heterosexuality and gender – and their ongoing currency – as well as how notions of sexuality are mobilized in the production of successful neoliberal girl citizens. I propose that this analytical approach is useful in terms of avoiding the reinscription of sexuality identity categories in education research.

Didaked : celebrity, privacy and player behaviour in the AFL

At the start of the 21st century elite male team sports assume a high profile presence in the commodified spaces of a globalised hyperreality. When games are sports entertainment businesses many elite performers are celebrities: they exist as brands whose every thought and action is commodified and consumed.
In these spaces the misbehaviours of a relatively small number of Australian Rules Football (AFL) players continue to make the news. A high profile recent incident involving Collingwood footballer Alan Didak is the subject of this paper. Given the levels of media attention devoted to such events we ask: Do AFL footballers have a right to privacy? We also question whether AFL players really understand what it means to be a sports celebrity.
The elevation of the sport star to the status of celebrity means that the idea that an elite performer has a private life and a public life that are separate is one that is problematic. Drawing on Foucault’s later work on the care of the self, our analysis will focus on a variety of processes which seek to develop and manage a professional identity for elite performers – and the risks that attach to these identities.

(Dis)ordering teacher education : from problem students to problem-based learning

This paper takes issue with the 'disabling' of students enrolled in teacher education courses, perpetrated by definitions of students' learning disorders and by the structures and pedagogies engaged by teacher educators. Focusing on one case, but with relevance for similarly affected systems, the paper begins by outlining the changed student entry credentials of Australian universities and their faculties of education. These are seen as induced by a shift from elite to mass provision of higher education and the particular effect on teacher education providers (especially those located in regional institutions) of the politics of government funding and the continuing demand for teachers by education systems. While these changed conditions are often used to argue an increased university population of students with learning disorders, the paper suggests that such arguments often have more to do with how student problems are defined by institutions and how these definitions serve to secure additional government funding. More pertinently, the paper argues that such definition tends to locate the problem in individual students, deferring considerations of teacher educators' pedagogy and the learning arrangements of their institutions. The paper concludes that the place to begin addressing these issues of difficulty would seem to be with a different conception of knowledge production.

More towards the centre : searching for field position for student equity in Australian higher education

The field of Australian higher education has changed, is changing and is about to change, as it is repositioned in relation to other ‘fields of power’. It is a sector now well defined by its institutional groupings – the Go8, the IRUs, the ATN and the rest – and by their relative claims to selectivity and exclusivity, with every suggestion of their differentiation growing. Even within these groupings there are distinctions and variations. Moreover, Australian universities now compete within an international higher education marketplace, ranked by THES and Shanghai Jiao Tiong league tables. ‘Catchment areas’ and knowledge production have become global. And the potential of a ‘joined‐up’ tertiary education system, of VET and universities, will rework relations within Australian higher education, as will lifting the volume caps on university student numbers. In sum, Australian universities (and agents within them) are positioned differently in the field, although not in the stable relations imagined by Pierre Bourdieu in the France of the 1960s. And being so variously and variably placed, institutions and agents have different stances available to them, including the positions they can take on student equity. In this paper I begin from the premise that our current shared stance on this has been out‐positioned. Nation‐bound proportional representation loses its equity meaning when the Australian elite send their children to Harvard, Yale, Oxford and Cambridge. The same could also be said, and has been, about equity representations by region, institution, discipline and degree. What then, also, for a new national research centre with a focus on student equity and higher education, for its research agenda and positioning in the field? What stance can it take on student equity that will resonate on a national and even international scale? And, given a global field of higher education, what definitions of equity and propositions for policy and practice can it offer? What will work in the pursuit of equity?

Cosmopolitanism : religion and kinship among young people in south-western Sydney

Debates about globalization have been accompanied by considerable critical assessment of the notion of cosmopolitanism. The upsurge in travel, trade, communication, and resettlement among non-elite individuals and groups has raised questions about the nature and form of ‘bottom-up’ or ‘vernacular’ cosmopolitanism. This article explores the ways in which the experiences of a group of young people (12–15 years of age) in south-western Sydney contribute to shared practices of membership in a culturally differentiated society. On one level, these young people display a de facto vernacular cosmopolitanism through familial experiences of migration. However, the article shows how these young people often move within socially and culturally bounded communities defined by ethnicity, language, socio-economic status, shaped by desires for safety, support and belonging, and maintained by propinquity, religion and the persistence of traditional expectations and patterns around gender and inter-marriage.

A modern audience for the ancient mysteries of the occult : the evolution of Rudolf Steiner's esoteric architecture

In today’s secular society, occult conceptions of architecture may seem somewhat anachronistic, but at the turn of the twentieth century the bourgeoisie, alongside society’s artistic and intellectual elite, were enthusiastically embracing a myriad of esoteric doctrines and mystical impulses. One of the most prominent and enduring examples of this cultural phenomenon is to be found in Rudolf Steiner’s quasi-philosophical system of Anthroposophy. As a path of spiritual development based on ancient mysteries of the occult, Anthroposophy offered people the belief that there existed a way out of the chaos and meaninglessness of modern industrialised society. Steiner used the medium of architecture as a way of repackaging the occult’s venerable secrets into a tangible, material form that made their hidden message more readily accessible to his contemporary audience. While he was striving towards creating a totally new architectural language appropriate to the modern age, he perceived architectural style as an evolutionary process that revealed its spiritual content in a particular way in every epoch. As such, Steiner made free use of historical and mythological precedents as archetypal references in his work, thus giving his architecture a genealogy that has, until now, remained largely undefined. By investigating Steiner’s indebtedness to ancient temples and the architecture of the baroque, a greater understanding of his architectural heritage is made possible, which not only helps to locate him within the cultural milieu of his day, but also within the broader context of architectural history. A spiritual thread runs through this history that demonstrates that Steiner’s architecture is not as idiosyncratic as it may initially seem, though whether his work represents an original step forward in the development of modern architecture, or is merely a hangover of nineteenth century eclecticism, must also be considered in order to determine the architectural value of Steiner’s esoteric ideas.