Freestyle race pacing strategies (400 m) of elite able-bodied swimmers and swimmers with disability at major international championships

Freestyle race pacing strategies (400 m) were compared between elite able-bodied swimmers and those with minimal physical (International Paralympic Committee S10 classification) and visual disabilities (International Paralympic Committee S13 classification). Data comprised 50-m lap splits and overall race times from 1176 400-m freestyle swims from World Championships, European Championships and Olympic/Paralympic Games between 2006 and 2012. Five pacing strategies were identified across groups (even, fast start, negative, parabolic and parabolic fast start), with negative and even strategies the most commonly adopted. The negative pacing strategy produced the fastest race times for all groups except for female S13 swimmers where an even strategy was most effective. Able-bodied groups swam faster than their S10 and S13 counterparts, with no differences between S10 and S13 groups. The results suggest adoption of multiple pacing strategies across groups, and even where impairments are considered minimal they are still associated with performance detriments in comparison to their able-bodied counterparts. The findings have implications for the planning and implementation of training related to pacing strategies to ensure optimal swimmer preparation for competition. Analogous performance levels in S10 and S13 swimmers also suggest a case for integrated competition of these classifications in 400-m freestyle swimming.     

Nausea is associated with endotoxemia during a 161-km ultramarathon

This study explored possible contributing factors to gastrointestinal distress, including endotoxemia, hyperthermia, dehydration and nutrition, during a 161-km ultramarathon. Thirty runners participated in the study and 20 finished the race. At three checkpoints and the finish, runners were interviewed to assess the incidence and severity of 12 gastrointestinal symptoms and to determine dietary intake. Core temperature was measured at the same locations. Runners were weighed pre-race, at the three checkpoints and the finish to monitor hydration status. Blood markers for endotoxemia (sCD14) and inflammation (interleukin-6 and C-reactive protein) were measured pre- and post-race. Gastrointestinal symptoms were experienced by most runners (80%), with nausea being the most common complaint (60%). Runners with nausea experienced significantly greater (P = 0.02) endotoxemia than those without nausea (sCD14 mean increase 0.7 versus 0.5 µg · mL^?1). There was a significant positive correlation (r = 0.652, P = 0.005) between nausea severity and endotoxemia level. Inflammatory response, core temperature, hydration level and race diet were similar between runners with and without nausea. This study links endotoxemia to nausea in ultramarathon runners. Other possible contributing factors to nausea such as hyperthermia, dehydration and nutrition did not appear to play a role in the symptomatic runners in this study.     

24 h Accelerometry: impact of sleep-screening methods on estimates of sedentary behaviour and physical activity while awake

Although accelerometers can assess sleep and activity over 24 h, sleep data must be removed before physical activity and sedentary time can be examined appropriately. We compared the effect of 6 different sleep-scoring rules on physical activity and sedentary time. Activity and sleep were obtained by accelerometry (ActiGraph GT3X) over 7 days in 291 children (51.3% overweight or obese) aged 4–8.9 years. Three methods removed sleep using individualised time filters and two methods applied standard time filters to remove sleep each day (9 pm–6 am, 12 am–6 am). The final method did not remove sleep but simply defined non-wear as at least 60 min of consecutive zeros over the 24-h period. Different methods of removing sleep from 24-h data markedly affect estimates of sedentary time, yielding values ranging from 556 to 1145 min/day. Estimates of non-wear time (33–193 min), wear time (736–1337 min) and counts per minute (384–658) also showed considerable variation. By contrast, estimates of moderate-to-vigorous activity (MVPA) were similar, varying by less than 1 min/day. Different scoring methods to remove sleep from 24-h accelerometry data do not affect measures of MVPA, whereas estimates of counts per minute and sedentary time depend considerably on which technique is used.     

What Happens in Vegas Doesn’t Always Stay in Vegas: Negotiating the Curriculum Leads to Agency and Change

Through a self-study methodology, six doctoral students and a professor examine how our semester long doctoral level class became a transformative space for all participants. We investigate how each individual was able to participate in the construction of a powerful and meaningful learning community, which led to a re-visioning of ourselves as women and teacher educators. Feminist pedagogy and positioning theory provide a guiding framework for both the class and our own reflective research. Our findings include, but are not limited to, showing how negotiating the curriculum led to a doctoral class becoming a safe space and how this negotiation led to transferring democratic practices to our teaching and the tensions associated with that. This work contributes to the field of teacher education as it focuses on the importance of fostering classroom and school cultures where knowledge production is facilitated through democratized practices. Our study highlights the value of creating a learning community where all members, both students and teacher, share power, privilege, and voice. It is in these types of positive educational environments that true meaning making and change can occur.     

HPE teachers’ negotiation of environmental health spaces: discursive positions,embodiment and materialism

A National Curriculum in Health and Physical Education (HPE) has recently been developed in Australia. This new curriculum reflects, among other educational priorities, both environmental sensitivities and a commitment to the enhancement of young people’s health and wellbeing. HPE is one of the key sites in the curriculum where a focused consideration of the relationship between the environment and health is possible. However, to date no research has considered the ways that HPE teachers might recognise and negotiate these spaces. The research described in this paper addresses this gap through an analysis of semi-structured interviews with generalist primary and specialist secondary HPE teachers, drawing on a ‘narrative ethnography’ approach derived from cultural geography. This analysis highlights the consequences of the absence of a knowledge tradition that explicitly links the fields of the environment and health in HPE. Participants who were able to conceptualise environmental health almost exclusively drew on dominant neoliberal and risk discourses. At the same time, teachers’ embodied histories and affective encounters with non-human nature helped them to rupture or challenge dominant assumptions about environmental health. We argue that corporeal knowledge developed through embodied experiences has the potential to assist teachers in formulating environmental health in ways that highlight how interactions with the environment might enhance health and wellbeing.     

Doctoral Education,Danger and Risk Management

This paper examines how risk management is reworking the doctoral supervisor/candidate relationship. We argue that a larger and more diverse population of doctoral students means special challenges for universities worldwide in managing doctoral programs to optimise their productivity and minimise the risk of failure, costliness and/or litigation. An effect of this is that professional and personal relationships in universities, as in many other public and private institutions, are being reshaped in order to be more closely aligned with risk minimisation policy directives and strategies. To understand what effects such reshaping is having on doctoral education, we bring together anthropological theorising of risk with pedagogical theorising of power and identity in education contexts. This theoretical cross-over between anthropology and education situates the pedagogic work of doctoral training within a culturally constituted order of professional care and risk management. We utilise this framework to interrogate "soft marking" as a specific domain in which risk minimisation is producing new relational identities for both supervisors and students involved in doctoral studies programs.     

Book reviews

Educational technology research and development -     

Genetic and environmental processes in young children's resilience and vulnerability to socioeconomic deprivation

Some children exposed to socioeconomic (SES) deprivation are resilient and function better than expected, given the level of deprivation they have experienced. The present study tested genetic and environmental contributions to young children's resilience and vulnerability to SES deprivation. Children's resilience was assessed by the difference between their actual score and the score predicted by their level of SES deprivation in the E-Risk Study, an epidemiological cohort of 1,116 five-year-old twin pairs. Consistent with previous research, results showed that maternal warmth, stimulating activities, and children's outgoing temperament appeared to promote positive adjustment in children exposed to SES deprivation. Findings add new information by demonstrating that resilience is partly heritable and that protective processes operate through both genetic and environmental effects.     

Creating first-year assessment support: lecturer perspectives and student access*

While online courses provide opportunities for a range of assessment tools and resources, little is known about how lecturers might best provide assessment cues to support diverse cohorts. This study explored how lecturers communicate messages about assessment expectations to first-year students in two courses at an Australian regional university (Nursing, n = 323; Engineering, n = 153), and how students accessed the assessment resources. A comparative case study methodology was used. Data included interviews with course coordinators to identify the assessment cues provided, course online content related to assessment and data recording student access of assessment resources. Diverse messaging systems were observed and verbal and written cues were abundant and embedded throughout both courses; however, not all students accessed all cues. What remains unclear is how students might bring together these cues in a productive way. Further research must explore the extent to which students can be better supported to improve their learning.