Physical activities and sedentary pursuits in African American and Caucasian girls

The purposes of this study were to describe and compare the specific physical activity choices and sedentary pursuits of African American and Caucasian American girls. Participants were 1,124 African American and 1,068 Caucasian American eighth-grade students from 31 middle schools. The 3-Day Physical Activity Recall (3DPAR) was used to measure participation in physical activities and sedentary pursuits. The most frequently reported physical activities were walking, basketball, jogging or running, bicycling, and social dancing. Differences between groups were found in 11 physical activities and 3 sedentary pursuits. Participation rates were higher in African American girls (p < or = .001) for social dancing, basketball, watching television, and church attendance but lower in calisthenics, ballet and other dance, jogging or running, rollerblading, soccer, softball or baseball, using an exercise machine, swimming, and homework. Cultural differences of groups should be considered when planning interventions to promote physical activity.     

A variant within the AQP1 3ʹ-untranslated region is associated with running performance,but not weight changes,during an Ironman Triathlon

The objective of this study was to test the association of the rs1049305 (G > C) variant within the 3?-untranslated region of the aquaporin 1 gene, AQP1, with changes in body weight, post-race serum sodium concentration and performance in Ironman triathletes. Five hundred and four male Ironman triathletes were genotyped for the rs1049305 variant within the AQP1 gene. Change in pre- and post-race body weight was calculated for 470 triathletes and used as a proxy for changes in body fluid during the race, as well as to divide triathletes into biologically relevant weight-loss groups (0–3%, 3–5% and >5%). There were no rs1049305 genotype effects on post-race serum sodium concentrations (P = 0.647), pre-race weight (P = 0.610) nor relative weight change during the Ironman Triathlons (P = 0.705). In addition, there were no significant differences in genotype (P = 0.640) nor allele (P = 0.643) distributions between the weight loss groups. However, triathletes who carry a C-allele were found to complete the 42.2-km run stage faster (mean 286, s = 49 min) than triathletes with a GG genotype (mean 296, s = 47 min; P = 0.032). The AQP1 rs1049305 variant is associated with running performance, but not relative body weight change, during the 2000, 2001 and 2006 South African Ironman Triathlons.     

Prospective Elementary Teachers’ Analysis of Children’s Science Talk in an Undergraduate Physics Course

We investigated how prospective teachers used physics content knowledge when analyzing the talk of elementary children during special activities in an undergraduate physics content course designed for prospective teachers. We found that prospective teachers used content knowledge to reflect on their own learning and to identify students’ science ideas and restate these ideas in scientific terms. Based on this research, we inferred that analyzing children’s ideas through videos provides a meaningful context for applying conceptual physics knowledge in physics courses. Activities that are embedded within a disciplinary curriculum, such as those studied here, may help prospective teachers learn to use disciplinary knowledge in exactly the type of activity in which their content knowledge will be most useful: listening to and interpreting children’s science ideas.     

Performance evaluation of the high sensitive troponin I assay on the Atellica IM analyser

IntroductionThe Fourth Universal Definition of Myocardial Infarction Global Taskforce recommends the use of high sensitive troponin (hs-Tn) assays in the diagnosis of acute myocardial infarction. We evaluated the analytical performance of the Atellica IM High-sensitivity Troponin I Assay (hs-TnI) (Siemens Healthcare Diagnostics Inc., Tarrytown, USA) and compared its performance to other hs-TnI assays (Siemens Advia Centaur, Dimension Vista, Dimension EXL, and Abbott Architect (Wiesbaden, Germany)) at one or more sites across Europe.Materials and methodsPrecision, detection limit, linearity, method comparison, and interference studies were performed according to Clinical and Laboratory Standards Institute protocols. Values in 40 healthy individuals were compared to the manufacturer’s cut-offs. Sample turnaround time (TAT) was examined.ResultsImprecision repeatability CVs were 1.1–4.7% and within-lab imprecision were 1.8–7.6% (10.0–25,000 ng/L). The limit of blank (LoB), detection (LoD), and quantitation (LoQ) aligned with the manufacturer’s values of 0.5 ng/L, 1.6 ng/L, and 2.5 ng/L, respectively. Passing-Bablok regression demonstrated good correlations between Atellica IM analyser with other systems; some minor deviations were observed. All results in healthy volunteers fell below the 99th percentile URL, and greater than 50% of each sex demonstrated values above the LoD. No interference was observed for biotin (≤ 1500 µg/L), but a slight bias at 5.0 g/L haemoglobin and 50 ng/L Tn was observed. TAT from was fast (mean time = 10.9 minutes) and reproducible (6%CV).ConclusionsReal-world analytical and TAT performance of the hs-TnI assay on the Atellica IM analyser make this assay fit for routine use in clinical laboratories.     

A comparative study of attitudes toward child sexual abuse among social work and judicial system professionals

To meet the needs of mutual clients, perpetrators and victims, social service and judicial system professionals share an obligation to collaborate in cases of child sexual abuse. Unknown is the extent to which individuals in counter professions share common beliefs about perpetrators and victims of child sexual abuse. This paper reports an inquiry into the attitudes of five professional groups within an urban criminal justice system specific to victim credibility, victim culpability, offender culpability, and the crime and punishment of child sexual abuse. As predicted, statistically significant differences in attitudes were found among child welfare social workers, police officers, district attorneys, public defenders, and judges. In particular, groups differed in their beliefs about victim credibility and punishment of offenders, suggesting conflict in addressing two fundamental questions in these cases: (1) Can a child be believed when he or she reports sexual abuse? and (2) How should the system deal with offenders? Both questions beg the continuing attention of all professionals invested in these cases, ultimately benefiting victims and offenders. Both quantitative and qualitative findings are provided in this report.     

Differentiation and its Problems: the views of primary teachers and curriculum support staff in Northern Ireland

This paper identifies a range of problems associated with putting differentiation into practice. The opinions of head teachers, subject co‐ordinators, and teachers were sought, as well as those of the curriculum support staff in the Education and Library Boards on the extent to which these problems affected primary schools in Northern Ireland, and case‐studies illuminated these views. The results showed that the curriculum support staff regarded most problems in differentiation in a more serious light than the schools themselves did, but there was agreement on the acute lack of time to deliver a differentiated curriculum, on the shortage of human resources and on the difficulties with new assessment methods.     

The Evolution of the UK’s Research Assessment Exercise: Publications,Performance and Perceptions

This article examines how the UK Research Assessment Exercise (RAE), along with the development of performance indicators, fits into the production of research within a changing policy context. The historical evolution of the RAE from 1985–2001 is considered, before looking specifically at how research output (in the form of journal publications) was, and is, assessed. Changes in process and output measurements necessitated a move from quantitative to quality evaluation, which affected both academic publishing and the role of journals within the RAE. The issue of quality – in terms of perceptions and performance – as applied to both is explored.