Technical variability of the Vivago® wrist-worn accelerometer

Abstract

The aim was to assess the technical variability of a new wrist-worn accelerometer under controlled conditions with a shaker device and during normal daily physical activities (PAs). In the first experiment, 10 wrist-worn accelerometers (Vivago^® Wellness, Paris, France) were attached to the shaker device. Variability was tested at five shaking frequencies (1.1, 2.1, 3.1, 4.1, and 10 Hz) for 10 min at each frequency. In the second experiment, 21 participants wore wrist-worn accelerometers and performed six consecutive 10-min periods of activity at increasing levels of intensity from sedentary to vigorous. Results from the first experiment show a modest inter- and intra-instrument reliability at low frequencies and that reliability improved as frequency increased. The inter-instrument coefficient of variation (CV) was 2.6–18.3%. The intra-instrument CV was 4.1–23.2%. Variability was similar in the second experiment with a CV inversely related to PA intensity. The inter- and intra-instrument CV varied from 24.2% and 19.9% for sedentary activities to 3.7% and 4.3% for vigorous PA, respectively. Results suggest that reliability was higher at high intensities, corresponding to moderate and vigorous PA, intensities generally recommended for public health purposes.     

The Effects of One versus Two Years of Intensive Reading Intervention Implemented with Late Elementary Struggling Readers

We examined the effectiveness of a researcher‐provided reading intervention with 484 fourth graders with significant reading difficulties. Students were randomly assigned to one year of intervention, two years of intervention, or a business‐as‐usual comparison condition (BAU). Students assigned to two years of intervention demonstrated significantly greater gains in reading fluency compared to students who received one year of intervention and the BAU group. Students in both the one‐ and two‐year groups demonstrated similar and significantly larger gains in word reading in comparison to the BAU group. There were no statistically significant differences between the three groups on standardized measures of reading comprehension. We discuss these results in the context of research with late elementary and secondary students targeting reading comprehension.     

Pedagogical devices as children’s social care levers: A study of social care workers’ attitudes towards boarding schools to care for and educate children in need

It has been proposed that boarding schools in England can be used to provide a stable education and care environment for vulnerable children in need, and the government is expanding their use. However, for vulnerable children to be placed in boarding schools, social workers will need to be willing to contemplate boarding as a viable care option. In this study we interviewed N = 21 social care practitioners including directors, senior and middle managers, frontline social workers, social worker-academics and family support workers who work with vulnerable children. Using thematic analysis of the transcribed interviews, seven major themes identified a range of issues and concerns held by social care workers about placing vulnerable children in boarding schools. We present these themes and consider the issues that will have to be addressed prior to changes in policy and practice. The study concludes that many of those within the social work profession are unlikely to consider boarding as an intervention for children in need. Further research in this area is a matter of urgency.     

Learning to lead: Self‐ and peer evaluation of team leaders in the human structure didactic block

Increasing emphasis on leadership in medical education has created a need for developing accurate evaluations of team leaders. Our study aimed to compare the accuracy of self‐ and peer evaluation of student leaders in the first‐year Human Structure block (integrated gross anatomy, embryology, and radiology). Forty‐nine first‐year medical students at Mayo Medical School were assigned to learning teams of three or four members. Teams worked together on daily laboratory dissection, clinical projects, embryology presentations, and daily group quizzes. Student team leaders were responsible for leading laboratory dissection, reviewing radiographic findings, and organizing group assignments. Weekly electronic surveys were administered to evaluate team leaders on altruism, compassion, respect, integrity, responsibility, commitment to excellence, and self‐reflection. Results demonstrated that team leaders rated themselves lower than their peers rated them in multiple aspects of leadership. Peer evaluation of team leaders was statistically higher than self‐evaluation in all traits measured except respect. Female leaders were rated higher by their peers in the areas of responsibility and self‐reflection compared to male leaders. This study demonstrates the need for increased communication between team leaders and members, along with creation of a mutually respectful environment, to improve leader awareness of their abilities and foster team success. Anat Sci Educ 2:210–217, 2009. © 2009 American Association of Anatomists.     

An evaluation of a pre‐training assistant educational psychologist programme

Two cohorts of psychology graduates with Graduate Basis for Registration (GBR) with the British Psychological Society (BPS), and a range of relevant work experience (teaching, youth and social work) were employed by the Kent Educational Psychology Service (EPS) over a two‐year period as assistant educational psychologists (Assistant EPs). This paper presents information about the role and effectiveness of this pre‐training Assistant EP programme. The role of the Assistant EP was identified as including: individual and group level casework, projects, applied research, and delivering training, under the direct supervision of EPs. All Assistant EP work was evaluated using a range of measures. Outcomes showed that intervention targets (as agreed using the Target Monitoring and Review form) were consistently met or exceeded. Key stakeholders perceived Assistant EPs to be a valuable and flexible resource and Assistant EPs felt that the role prepared them well for applying for professional training courses. The paper concludes with a brief discussion around the future role of pre‐training Assistant EPs.     

百万富翁俱乐部(英文)

The ranks of millionaires,now more than ten million strong,are swelling one BRIC at a time.that's because Brazil,Russia,India,and China are enjoying some of the highest rates of growth in millionaires.According to an annual report on world wealth,the population of those with a million U.S. dollars in assets,not including home value,rose most last year in stock-strong India(up 23%),manufacturing giant China(20%),and ethanol-exporting Brazil(19%),with gas-and oil-rich Russia(14%) surging too.They're joinin...