Whole-body pre-cooling and heat storage during self-paced cycling performance in warm humid conditions

The aim of this study was to establish the effect that pre-cooling the skin without a concomitant reduction in core temperature has on subsequent self-paced cycling performance under warm humid (31 degrees C and 60% relative humidity) conditions. Seven moderately trained males performed a 30 min self-paced cycling trial on two separate occasions. The conditions were counterbalanced as control or whole-body pre-cooling by water immersion so that resting skin temperature was reduced by approximately 5-6 degrees C. After pre-cooling, mean skin temperature was lower throughout exercise and rectal temperature was lower (P < 0.05) between 15 and 25 min of exercise. Consequently, heat storage increased (P < 0.003) from 84.0+/-8.8 W x m(-2) to 153+/-13.1 W x m(-2) (mean +/- s(mean)) after pre-cooling, while total body sweat fell from 1.7+/-0.1 l x h(-1) to 1.2+/-0.1 l h(-1) (P < 0.05). The distance cycled increased from 14.9+/-0.8 to 15.8+/-0.7 km (P < 0.05) after pre-cooling. The results indicate that skin pre-cooling in the absence of a reduced rectal temperature is effective in reducing thermal strain and increasing the distance cycled in 30 min under warm humid conditions.     

Middle years teacher education: New programs and research directions

Teacher education programs focussing on the development of specialist teachers for ‘the middle years’ have proliferated in Australian universities in recent years. This paper provides some insights into middle years’ teacher education programs at the University of Queensland, Edith Cowan and Flinders Universities with regard to their: philosophical underpinnings; specific educational context; scope and nature of the program. In addition, some of the research directions and efficacy strategies utilised in conjunction with the programs will be shared, along with some early findings from a longitudinal study in one of the programs. We propose that the pattern of programmatic growth heralds a new time for teacher education, and we speculate about the production of new kinds of teacher identities as graduates take their place in the profession.     

Science at the Center: An Emergent, Standards-Based, Child-Centered Framework for Early Learners

This article will describe an approach to planning and assessment that is designed to support an emergent, play-based curriculum while helping teachers make informed instructional decisions. Using assessment that supports curriculum allows early childhood professionals to infuse early learning content standards into meaningful, relevant and connected topics of study. Through a combined effort among teachers, administrators and university faculty, one demonstration school developed a method of integrating and evaluating content standards and developmental skills into an emergent curriculum model. While this remains a work in progress, it does show promise for being an effective way to address state standards while maintaining recommended developmentally appropriate practices.     

Health and medical news on the Web: comparing the results of news-providing Web resources

News changes constantly. That change and the abundance of Web-based news resources available complicate finding the news. This paper reviews sixteen different online news sources for their coverage of recent health and medical issues; both general-interest and medical news sites are included. Three health-related news stories were searched in all resources within set time-frames to provide a comparison of coverage. Features and types of resources are described. The use of RSS feeds and weblogs to find news is also discussed with suggestions for using news aggregators to control the flow of information.