Determination of peak cardiorespiratory fitness parameters in children: which averaging method should we use?

The purpose of this study was to identify which averaging methods most accurately measures peak cardiorespiratory fitness (CRF) parameters [peak O₂ uptake (VO₂), peak O₂pulse and peak respiratory exchange ratio (RER)] in a sample of healthy children and adolescents. In this cross-sectional multicenter study, we recruited 278 healthy children aged 12–17 years. We compared the mean peak value of three CRF parameters using the recommended averaging methods (30-second block average) with alternative averaging methods such as moving averages or shorter smoothing periods. We also assessed averaging methods for accuracy by individually reviewing breath-by-breath scatter plots. The 30-second block average method resulted in a lower mean peak VO₂ and in an increased proportion of underestimated peak values. Using a 30-second moving average significantly increased mean peak values which increased accuracy. Similar results were found for peak RER and peak O₂pulse. In conclusion, the currently recommended averaging method (30-second block average) increased the risk of misinterpretation of peak CRF values in children. Using a moving average approach decreased misinterpretation and increased accuracy.     

A History of Infant Feeding

The historical evolution of infant feeding includes wet nursing, the feeding bottle, and formula use. Before the invention of bottles and formula, wet nursing was the safest and most common alternative to the natural mother''s breastmilk. Society''s negative view of wet nursing, combined with improvements of the feeding bottle, the availability of animal''s milk, and advances in formula development, gradually led to the substitution of artificial feeding for wet nursing. In addition, the advertising and safety of formula products increased their popularity and use among society. Currently, infant formula-feeding is widely practiced in the United States and appears to contribute to the development of several common childhood illnesses, including atopy, diabetes mellitus, and childhood obesity.     

‘They call me wonder woman’: the job jurisdictions and work‐related learning of higher level teaching assistants

This paper reports on an in‐depth interview study of the roles, job jurisdictions and associated learning of higher level teaching assistants (HLTAs). This role has the core purpose of covering classes to enable teacher release for planning, preparation and assessment. HLTAs’ individual job jurisdictions are described and discussed as are implications for their knowledge and practice. The HLTAs are found to have wide‐ranging job domains and, sometimes, unexpected involvements which mean they have to improvise practice. The study acknowledges that these HLTAs are being creatively managed and deployed by head teachers for the sake of teachers and schools. However, they are, at times, required to take on planning and cover duties which are beyond their knowledge and training with a likely impact on children’s learning. Given their training and experience it is asked if covering classes to release teachers is the most effective use of their abilities and time.     

Teaching social studies to high school students with academic handicaps in a mainstreamed setting: effects of a computerized study guide

This research investigated the effectiveness of a computerized study guide, in comparison to a notetaking condition, as a method to increase textbook comprehension among students with learning disabilities and remedial education pupils enrolled in a ninth-grade world geography class. Results indicated that the computerized study guide produced significantly higher performance than notetaking for both groups of students. There was no significant difference in the performance of the two groups within treatments. Several practical issues concerning the implementation of computerized study guides in secondary programs serving students with academic handicaps are discussed.     

Intergenerational Discussions as a Curriculum Strategy: Modeling Audacious Hope in Action

This article builds upon the idea of audacious hope in action described by Generett and Hicks in “Beyond Reflective Competency: Teaching for Audacious Hope-in-Action.” Outlining the difficulties that teachers experience sustaining hope, the author describes the survival strategies used by African Americans to remain hopeful when there was little evidence to support such a stance. This article proposes that intergenerational conversations with African Americans who are committed to social change can be an effective curriculum strategy for teacher educators seeking to incorporate a hopeful stance into their curriculums. Gretchen Givens Generett is an Associate Professor in the School of Education and Social Sciences at Robert Morris University. Her current research investigates the role of hope in education and the challenges of working for social change in mixed communities.     

Priming Welfare Queens and Other Stereotypes: The Transference of Media Images into Interpersonal Contexts A previous version of this manuscript was presented at the 48th annual meeting of the International Communication Association,San Diego (2004).

Specific stereotype portrayals of African American women were hypothesized to produce stereotype-consistent judgments made of a different African American woman. Participants (N?=?76) observed a mammy, jezebel or welfare queen video-segment. Then they observed an African American woman in a mock job interview and rated the interviewee. Participants who observed a specific stereotype associated the interviewee more quickly with stereotype-consistent adjectives than with stereotype-inconsistent adjectives for all three stereotypes. For measures of how suitable the woman was for jobs that were related to the stereotypes, only the welfare queen prime produced significant effects.