A comparison of accelerometry analysis methods for physical activity in older adult women and associations with health outcomes over time     

Katie J. Thralls  Suneeta Godbole  Todd M. Manini  Eileen Johnson  Loki Natarajan  Jacqueline Kerr 《Journal of sports sciences》2013,31(20):2309-2317

ABSTRACT

This study compared five different methods for analyzing accelerometer-measured physical activity (PA) in older adults and assessed the relationship between changes in PA and changes in physical function and depressive symptoms for each method. Older adult females (N = 144, M_age = 83.3 ± 6.4yrs) wore hip accelerometers for six days and completed measures of physical function and depressive symptoms at baseline and six months. Accelerometry data were processed by five methods to estimate PA: 1041 vertical axis cut-point, 15-second vector magnitude (VM) cut-point, 1-second VM algorithm (Activity Index (AI)), machine learned walking algorithm, and individualized cut-point derived from a 400-meter walk. Generalized estimating equations compared PA minutes across methods and showed significant differences between some methods but not others; methods estimated 6-month changes in PA ranging from 4 minutes to over 20 minutes. Linear mixed models for each method tested associations between changes in PA and health. All methods, except the individualized cut-point, had a significant relationship between change in PA and improved physical function and depressive symptoms. This study is among the first to compare accelerometry processing methods and their relationship to health. It is important to recognize the differences in PA estimates and relationship to health outcomes based on data processing method.

Abbreviation: Machine Learning (ML); Short Physical Performance Battery (SPPB); Center of Epidemiologic Studies Depression Scale (CES-D); Physical Activity (PA); Activity Index (AI); Activities of Daily Living (ADL)  相似文献   

Listening to young people with autism: learning from researcher experiences     

Juliet Scott-Barrett  Katie Cebula  Lani Florian 《International Journal of Research & Method in Education》2019,42(2):163-184

This study explores the opportunities and dilemmas that have been encountered by researchers seeking the views of young people with autism. Twelve researchers were interviewed about their experiences in this field. Through exploration of the complex methodological and ethical issues that they encountered, this study aims to better understand how researchers can improve the way they listen to, and engage with, the views of children and young people with autism. This article discusses four themes that emerged from the interviews: power dynamics; building rapport; communication; and meaningful processes and outputs.  相似文献   

Working with childhood sexual abuse: a survey of mental health professionals     

Day A  Thurlow K  Woolliscroft J 《Child abuse & neglect》2003,27(2):191-198

OBJECTIVE: This study aimed to establish the views of a group of mental health professionals from various disciplines working in mental health service in a British hospital about the needs of clients who had experienced childhood sexual abuse. METHOD: Staff members were asked to complete an anonymous survey which asked questions relating to knowledge of sexual abuse and its effects, and the needs of clients and staff in working with this client group. A total of 54 people responded to the survey, 42 were female, 11 male. Most (72%) reported having over 10 years experience working in mental health, working in both in-patient and out-patient settings. RESULTS: While respondents were reasonably knowledgeable about childhood sexual abuse, they were not very comfortable, competent or supported in their work with this client group. There were no differences in responses according to the age or gender of respondents, but less experienced staff were more likely to feel supported. Those that had received training and/or supervision felt significantly more capable in working with this client group. CONCLUSIONS: The study offers some support for the development of specialist training, consultancy and supervision programs for mental health staff in the area of child sexual abuse.  相似文献   

The Impact of Choice and Control on Women’s Childbirth Experiences     

Katie Cook  Colleen Loomis 《The Journal of perinatal education》2012,21(3):158-168

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Authentically Engaged Learning Through Live Supervision: A Phenomenological Study          下载免费PDF全文

Steven Moody  Katie Kostohryz  Linwood Vereen 《Counselor Education & Supervision》2014,53(1):19-33

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Mobiles for literacy in developing countries: An effectiveness framework     

Daniel A. Wagner  Nathan M. Castillo  Katie M. Murphy  Molly Crofton  Fatima Tuz Zahra 《Prospects》2014,44(1):119-132

In recent years, the advent of low-cost digital and mobile devices has led to a strong expansion of social interventions, including those that try to improve student learning and literacy outcomes. Many of these are focused on improving reading in low-income countries, and particularly among the most disadvantaged. Some of these early efforts have been called successful, but little credible evidence exists for those claims. Drawing on a robust sample of projects in the domain of mobiles for literacy, this article introduces a design solution framework that combines intervention purposes with devices, end users, and local contexts. In combination with a suggested set of purpose-driven methods for monitoring and evaluation, this new framework provides useful parameters for measuring effectiveness in the domain of mobiles for literacy.  相似文献   

An Examination of Coursera as an Information Environment: Does Coursera Fulfill its Mission to Provide Open Education to All?     

Samantha Audsley  Kalyani Fernando  Brittany Robinson  Katie Varney 《期刊图书馆员》2013,64(2):136-166

In terms of international education, the concept of online education seems to be a growing trend. Edxonline.org, Minervaproject.com, and Udacity.com are all new massive online open courses (MOOCs)—education websites similar to Coursera offering students the ability to receive the best education from elite universities entirely online. The most tantalizing promise of a company like Coursera is the role it might play in improving education for the world's have-nots: high school dropouts, the global poor, and those less able to self-teach.  相似文献   

Organizational Dissent as a Function of Organizational Justice     

Alan K. Goodboy  Rebecca M. Chory  Katie Neary Dunleavy 《Communication Research Reports》2013,30(4):255-265

This study examined the relationships between perceptions of organizational justice and enacting organizational dissent. Participants were 107 full-time employees working in various organizations. Results indicated that employee perceptions of distributive and interpersonal justice negatively predicted latent dissent, while perceptions of informational justice positively predicted latent dissent. Perceptions of interpersonal justice were the strongest predictor of latent dissent. Perceptions of justice were not related to articulated or displaced dissent. Future research should continue to explore triggering agents of dissent in organizations.  相似文献   

Unpacking Our Academic Suitcases: The Inner Workings of Our Feminist Research Group     

Vikki Krane  Sally R. Ross  Katie Sullivan Barak  Julie L. Rowse  Cathryn B. Lucas-Carr 《Quest (Human Kinetics)》2013,65(4):249-267

In this paper we focus on the lived experiences of multidisciplinary scholars as we navigated and coalesced into a productive, interdisciplinary collaboration. We pull from our foundations in feminist methodology and provide excerpts from personal journals and reflexive group interviews to provide a behind-the-scenes account of the inner workings of a feminist research group. While sharing a common research goal, each member negotiated her personal, conceptual, and epistemological stances as we produced an effective, interdisciplinary pastiche. Throughout this process, we worked to create a non-hierarchical atmosphere, continuously and ethically questioned our methods, and incorporated reflexivity in the research processes. In addition to sharing our past experiences, we note challenges we encountered and offer practical suggestions based on the lessons we learned through this collaboration.  相似文献   

The effect of tuition fees on student mobility: the UK and Ireland as a natural experiment     

Paul Wakeling  Katie Jefferies 《British Educational Research Journal》2013,39(3):491-513

We exploit changes in student funding policies across the four UK nations and the Republic of Ireland to conduct a natural experiment investigating the marginal effect of differing tuition fee levels on students' enrolment behaviour. Whilst previous international research suggests increases in fees suppress demand and disincentivise cross‐border educational migration, some studies in North America and Germany find an element of inelasticity of demand. In the UK, various commentators have predicted marked shifts in student mobility in response to variation in tuition fee prices by country, trends expected to sharpen following substantial planned rises in tuition fees from 2012. After outlining tuition fee policies in the UK and Ireland, we analyse data on student enrolment destinations across the five countries for the period 2000–2010. We find little evidence to support the notion that student mobility is driven by economic ‘rationality’. Enrolment rates have risen despite increases in tuition fees and there is a long‐term trend for students to stay at home. Students seem not to be ‘pushed’ out‐of‐country by higher fees, but may be discouraged from moving if fees are lower in‐country. Student mobility within the UK and Ireland follows well‐worn paths from and to specific countries and institutions. Finally, we consider the implications of our findings for student mobility in general and forthcoming changes to UK student funding policies in particular.  相似文献