Using compositional data analysis to explore accumulation of sedentary behavior,physical activity and youth health     

Simone J.J.M.Verswijveren  Karen E.Lamb  Josep A.Martín-Fernández  Elisabeth Winkler  Rebecca M.Leech  Anna Timperio  Jo Salmon  Robin M.Daly  Ester Cerin  David W.Dunstan  Rohan M.Telford  Richard D.Telford  Lisa S.Olive  Nicola D.Ridgers 《运动与健康科学(英文)》2022,11(2):234-243

Purpose:The study aimed to describe youth time-use compositions,focusing on time spent in shorter and longer bouts of sedentary behavior and physical activity(PA),and to examine associations of these time-use compositions with cardiometabolic biomarkers.Methods:Accelerometer and cardiometabolic biomarker data from 2 Australian studies involving youths 7-13 years old were pooled(complete cases with accelerometry and adiposity marker data,n=782).A 9-component time-use composition was formed using compositional data analysis:time in shorter and longer bouts of sedentary behavior;time in shorter and longer bouts of light-,moderate-,or vigorous-intensity PA;and"other time"(i.e.,non-wear/sleep).Shorter and longer bouts of sedentary time were defined as<5 min and>5 min,respectively.Shorter bouts of light-,moderate-,and vigorous-intensity PA were defined as<1 min;longer bouts were defined as≥1 min.Regression models examined associations between overall time-use composition and cardiometabolic biomarkers.Then,associations were derived between ratios of longer activity patterns relative to shorter activity patterns,and of each intensity level relative to the other intensity levels and"other time",and cardiometabolic biomarkers.Results:Confounder-adjusted models showed that the overall time-use composition was associated with adiposity,blood pressure,lipids,and the summary score.Specifically,more time in longer bouts of light-intensity PA relative to shorter bouts of light-intensity PA was significantly associated with greater body mass index z-score(zBMI)(β=1.79;SE=0.68)and waist circumference(β=18.35,SE=4.78).When each activity intensity was considered relative to all higher intensities and"other time",more time in light-and vigorous-intensity PA,and less time in sedentary behavior and moderate-intensity PA,were associated with lower waist circumference.Conclusion:Accumulating PA,particularly light-intensity PA,in frequent short bursts may be more beneficial for limiting adiposity compared to accumulating the same amount of PA at these intensities in longer bouts.  相似文献   

Truth and being     

Chris Daly 《Metascience》2010,19(3):417-420

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The City of Caxton and the Electronic Suburbs     

Macdonald Daly 《English in Education》1992,26(3):11-18

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The cohort model: Lessons learned when principals collaborate     

Lisa A. Umekubo  Janet H. Chrispeels  Alan J. Daly 《Journal of Educational Change》2015,16(4):451-482

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Trainee English teachers and the struggle for subject knowledge   总被引：1，自引：1，他引：0  

Caroline Daly 《Changing English: An International Journal of English Teaching》2004,11(2):189-204

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Reflective Writing on the Cadaveric Dissection Experience: An Effective Tool to Assess the Impact of Dissection on Learning of Anatomy,Humanism, Empathy,Well-Being,and Professional Identity Formation in Medical Students     

Matthew P. Abrams  Tabitha Eckert  Daniel Topping  Katherine D. Daly 《Anatomical sciences education》2021,14(5):658-665

Growing evidence supports the use of reflective writing activities centered around the human cadaveric dissection experience to support and assess elements of medical student wellness. Dissection may promote personal and professional development, increase resilience, and foster a sense of connection and community. This study employed a qualitative analysis of a reflective writing exercise to explore the question: “What is the impact of the cadaveric dissection anatomy experience on the personal and professional development of medical students?” This cross-sectional study was conducted at the conclusion of the first-year anatomy module. A total of 117 United States allopathic medical students were given a questionnaire designed to elicit the students' experiences and introspection. The exercise included four reflective questions that were provided to 20 groups of six students. Grounded theory analysis was used to explore themes that arose in students' responses. Participants exhibited several common reactions to cadaveric dissection. After analyzing all responses, 266 unique open codes were identified for all four questions. These open codes were sorted into ten distinct axial codes, which are broader categorical themes of open codes. The aims of our study were to identify themes that emerged as students reflected on the impact of their dissection experience using reflective writing as a tool to capture these themes and to gather information to inform pedagogical methodologies. The researchers observed that the educational effects of dissection captured in the reflective writing resembled those found in other areas of medical education that emphasize professional identity formation and important humanistic qualities.  相似文献   

Food aversion learning in kangaroo rats: A specialist-generalist comparison     

Martin Daly  Joan Rauschenberger  Phil Behrends 《Learning & behavior》1982,10(3):314-320

Two species of kangaroo rat (Dipodomys), varying in their degree of dietary specialization, were compared in a series of food aversion learning experiments to test the hypothesis that rapid aversion learning is an adaptation of relatively generalist feeders. The more generalist species indeed learned better or more rapidly in certain experiments, but species differences were at least partly a function of the specific test foods. Interpretation of results is complicated by differences between the two species in their initial reactions to particular foods, in the relative efficacy of different foods in supporting learned aversions, and perhaps even in their physiological responses to illness-inducing and control procedures.  相似文献   

A theory of action account of an across-school collaboration policy in practice     

Sinnema  Claire  Hannah  Darren  Finnerty  Alex  Daly  Alan 《Journal of Educational Change》2022,23(1):33-60

Journal of Educational Change - Educational systems worldwide promote the use of collaborative networks to foster teacher learning and improve practice in the pursuit of educational change to...  相似文献   

More than a master: developing,sharing, and using knowledge in school–university research networks     

Frank Cornelissen  Alan J. Daly  Yi-Hwa Liou  Jacqueline van Swet  Douwe Beijaard  Theo C.M. Bergen 《Cambridge Journal of Education》2014,44(1):35-57

Postgraduate master’s programs for in-service teachers may be a promising new avenue in developing research partnership networks that link schools and university and enable collaborative development, sharing and use of knowledge of teacher research. This study explores the way these knowledge processes originating from master’s students’ research occurs in the school–university network of a master’s program embedded in the K–12 school environment of a Central Management Organization in the US. Questionnaires, interviews, and logs were used to collect quantitative and qualitative data at four time-points over a 10-month period. Data were analyzed at three network levels: school, dyad, and individual. Findings indicate that the school network context provided both master’s students and research advisors with a supportive context for collaboratively engaging in knowledge processes during research as well as after they graduated. However, the network context was not enough to build sustainable and productive relationships in the partnership network.  相似文献   

Reducing test anxiety among school-aged adolescents: a field experiment     

Dave Putwain  Suzanne Chamberlain  Anthony L. Daly  Shireen Sadreddini 《Educational Psychology in Practice》2014,30(4):420-440

This paper evaluates the effectiveness of a multimodal and information technology (IT)-delivered intervention for test anxiety. Participants were randomly allocated to an intervention or waiting list group. Test anxiety was measured pre- and post-intervention and academic buoyancy, a construct that refers to students’ capacity to withstand academic challenge and pressure, as a covariate. In the intervention group, 13.7% of participants completed the full intervention programme comprising six sessions; 25.5% partially completed the programme (one or more sessions); and 60.8% of participants chose not to complete any sessions. Results showed that, after completing the intervention and when controlling for academic buoyancy, highly test anxious students showed a reduction in the worry and tension components of test anxiety, relative to those who did not complete the intervention. The findings suggest that the intervention may offer highly test anxious students a means of reducing their anxiety that does not rely on face-to-face delivery.  相似文献