Improving the precision of the accumulated oxygen deficit using VO2-power regression points from below and above the lactate threshold

The accumulated oxygen deficit (AOD) method assumes a linear VO₂-power relationship for exercise intensities increasing from below the lactate threshold (BLT) to above the lactate threshold (ALT). Factors that were likely to effect the linearity of the VO₂-power regression and the precision of the estimated total energy demand (ETED) were investigated. These included the slow component of VO₂ kinetics (SC), a forced resting y-intercept and exercise intensities BLT and ALT. Criteria for linearity and precision included the Pearson correlation coefficient (PCC) of the VO₂-power relationship, the length of the 95% confidence interval (95% CI) of the ETED and the standard error of the predicted value (SEP), respectively. Eight trained male and one trained female triathlete completed the required cycling tests to establish the AOD when pedalling at 80 rev/min. The influence of the SC on the linear extrapolation of the ETED was reduced by measuring VO₂ after three min of exercise. Measuring VO₂ at this time provided a new linear extrapolation method consisting of ten regression points spread evenly from BLT and ALT. This method produced an ETED with increased precision compared to using regression equations developed from intensities BLT with no forced y-intercept value; (95%CI (L), 0.70±0.26 versus 1.85±1.10, P<0.01; SEP(L/Watt), 0.07±0.02 versus 0.28±0.17; P<0.01). Including a forced y-intercept value with five regression points either BLT or ALT increased the precision of estimating the total energy demand to the same level as when using 10 regression points, (5 points BLT + y-intercept versus 5 points ALT + y-intercept versus 10 points; 95%CI(l), 0.61±0.32, 0.87±0.40, 0.70±0.26; SEP(L/Watt), 0.07±0.03, 0.08±0.04, 0.07±0.02; p>0.05). The VO₂-power regression can be designed using a reduced number of regression points... ABSTRACT FROM AUTHOR

International comparisons of rural-urban educational attainment : data and determinants

We study cross-country differences in rural and urban educational attainment by using a data set comprising 56 countries. We focus on the determinants of rural–urban educational inequality, which is measured by the ratio of rural to urban average years of schooling within each country. We find that riskier human capital investment, less credit availability, a colonial heritage, a legal system of French origin and landlockedness of nations are all associated with relatively lower rural educational levels and greater rural–urban educational inequality. Conversely, larger formal labor markets, better infrastructure and a legal system of British origin are associated with relatively higher rural educational levels and lower rural–urban educational inequality. We also identify an interaction effect between economic development level and some of these factors. In particular, we find that as development level increases, the negative (positive) relationship between French (British) legal systems and rural–urban educational inequality is reversed and becomes positive (negative).

Crossing cultural boundaries, flexible approaches and nurse education : a case study

Computer-mediated conferencing commonly is used to promote collaborative learning, including student learning across distance. This article presents the outcomes and experiences of Master of Nursing students in three countries using flexible learning approaches facilitated by the use of computer-mediated conferencing. It examines issues relating to support for global nursing education, presents an evaluation of one particular unit, and presents themes in the feedback from students about their experience. The authors report the findings in three categories: broadened perspectives, tackling the technology, and adaptive learning. Furthermore, the article offers suggestions for enhancing student-learning experiences when computer-mediated conferencing facilities are used.

Middle power dilemmas : Australia, the US and China

TOPICS
Australia and the US: the search for security through alliance
Australia and China: from perceived threat to economic embrace
Nightmare scenarios? Prospects for US-China conflict
Strategies for a pressured middle power<br />

Cultural racism, language prejudice and discrimination in hospital contexts : an Australian study

This article explores the idea that racial and ethnic disparities in healthcare may be expressive of unacknowledged practices of cultural racism. In conducting this exploration, the researchers identify, describe and discuss the practice of language prejudice and discrimination by health service providers, discovered serendipitously in the context of a broader study exploring cultural safety and cultural competency in an Australian healthcare context. The original study involved individual and focus groups interviews with 145 participants recruited from over 17 different organisational and domestic home sites. Participants included health service managers, ethnic liaison officers, qualified health interpreters, cultural trainers/educators, ethnic welfare organisation staff, registered nurses, allied health professionals, and healthcare consumers. Participants self-identified as being from over 27 different ethnocultural and language backgrounds.

Analysis of the data revealed that English language proficiency, like skin colour, was used as a social marker to classify, categorise, and negatively evaluate people of non-English speaking backgrounds (NESB) in the contexts studied. Negative evaluations, in turn, were used to justify the exclusion of NESB people from healthcare relationships and resources. Further data analysis revealed that underpinning the negative attitudes and behaviours in hospital domains concerning people who spoke accented English or who did not speak English proficiently were a dislike of difference, fear of difference, intolerance of difference, fear of competition for scarce healthcare resources, repressed hostility toward difference, and ignorance.

Highlighting the implications of language prejudice for the safety and quality care of NESB people, the researchers call for further internationally comparative research and debate on the subject.

The relationship between human beings and technological systems

By combining the ontological approaches to technology of Dessauer, Ortega y Gasset and Heidegger, with the psychology of Jung, the integrated and psycho-constructivist approach to technology demonstrates that the relationship between human beings and technological systems is a symptomatic, symbiotic and synchronistic factor of human well-being and adaption.

A cross-cultural examination of social and sexual behaviour in High Functioning Autism and Down Syndrome

The focus of this research was to obtain an understanding of the social and sexual behaviour of adolescents with High Functioning Autism (HFA) or Down Syndrome (DS) in comparison to Typically Developing (TD) adolescents across cultures. The findings highlight the importance of cross-cultural research and indicate the need for sex education. The portfolio presents four case studies which support the proposition that insecure attachment is only likely to lead to depression in the presence of socially-related and other psychological difficulties, since not all insecurely attached children develop depressive symptoms.