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141.
142.
Panteleimon Ekkekakis Mark E. Hartman Matthew A. Ladwig 《Journal of sports sciences》2018,36(16):1860-1871
Exercise or physical activity are recommended options within stepped-care treatment models for depression. However, few physicians present these options to patients, in part because of the impression that the supporting evidence is weak or inconsistent. We speculate that the coocurrence of “counter-messaging” and deficient critical appraisal may lead to such impressions. We focus on TREAD-UK (ISRCTN16900744), the largest trial to investigate “whether physical activity can be an effective treatment for depression within primary care”. In media statements, researchers declared that exercise was ineffective in lowering depression. We examined (a) the results of the trial, critiques, and rejoinders, (b) the impact on internet searches, and (c) whether TREAD-UK was critically appraised, as reflected in citing articles. We show that the results of TREAD-UK were misrepresented. The media campaign resulted in a fourfold increase in relevant internet searches. Of articles characterising the results, 57% adopted the interpretation that exercise failed to lower depression, whereas only 17% were critiques. We identify similarities to media portrayals of the OPERA (ISRCTN43769277), DEMO (NCT00103415), and DEMO-II trials (NCT00695552). We note a disconcerting trend of media campaigns that misrepresent the effects of exercise on depression and call for increased scrutiny in peer reviewing both pre- and post-publication. 相似文献
143.
Matthew Guschwan 《Sport in Society》2018,21(6):977-992
AbstractI was enthralled by the energy at the stadium. I was captivated by the visual choreography and visceral energy of fans chanting, jumping and shouting together. For me, the anonymous individuals at the stadium were the spectacle. In graduate school, I learned systematic approaches to research, but the tools of analysis never interested me as much as the thing itself – the social life that occurs in and around a stadium. My goal was to get to the heart of football fandom in Rome, plain and simple. Ultimately, I tried to conceptualize the culture, and wrap my findings into an academic narrative that expresses how important fandom is to the people in the stands. Football fandom is about passion that transcends rationality, and makes life more meaningful for those who partake. The question of how to articulate that phenomenon is an open one. This essay grapples with that question. 相似文献
144.
Rita Karam Susan G. Straus Albert Byers Courtney A. Kase Matthew Cefalu 《Educational technology research and development : ETR & D》2018,66(2):215-245
This study explores the diffusion of Web 2.0 technologies among science educators and the ways that these technologies are used to build teacher professional communities of practice (CoP) in life sciences and physical sciences. We used surveys and web analytics collected over a 21-month period to examine factors that motivate teachers to collaborate in these CoPs and the extent to which collaborative participation contributes to the development of sociotechnical capital and job outcomes, such as instructional practices and self-efficacy for science instruction. Results showed that only the lack of co-located peers at teachers’ schools predicted CoP participation. Participation did not predict job outcomes, but it did predict some aspects of sociotechnical capital, such as a cohesive climate and situated knowledge. In addition, sociotechnical capital was associated with job outcomes, including use of inquiry-based instruction, use of inquiry-based classroom activities and teacher self-efficacy. The lack of effect of most of the antecedent variables in predicting participation and the relatively minor role of participation in contributing to sociotechnical capital and job outcomes may be explained by floor effects on participation due to infrequent and ephemeral engagement of CoP members. Although participation rates were generally low, the positive association of participation with sociotechnical capital as well as generally favorable ratings of sociotechnical constructs suggest that online CoPs may have value for distributed science educators. Future research should address whether persistent participation by individuals is needed to build and sustain sociotechnical capital in online CoPs and to enhance development of participants’ teaching attitudes/practices. 相似文献
145.
Matthew B. Pontifex Steven P. Broglio Eric S. Drollette Mark R. Scudder Chris R. Johnson Phillip M. Oapos;Connor 《Research quarterly for exercise and sport》2013,84(4):553-559
We assessed the extent to which failures in sustained attention were associated with chronic mild traumatic brain injury (mTBI) deficits in cognitive control among college-age young adults with and without a history of sport-related concussion. Participants completed the ImPACT computer-based assessment and a modified flanker task. Results indicated that a history of mTBI, relative to healthy controls, was associated with inferior overall flanker task performance with a greater number of omission errors and more frequent sequentially occurring omission errors. Accordingly, these findings suggest that failures in the ability to maintain attentional vigilance may, in part, underlie mTBI-related cognition deficits. 相似文献
146.
Matthew E. Kreitzer 《国际体育史杂志》2013,30(2):232-246
During the first quarter of the twentieth century Northwestern Shoshone from the Washakie Indian Colony of northern Utah competed with their white neighbours in sporting contests. These events were recorded by white news reporters and, even more conspicuously, by a Shoshone journalist named Willie Ottogary. For 23 years Ottogary reported the daily highlights, struggles, successes and sporting events of his people. His social column was published in several newspapers of northern Utah and southern Idaho. Living descendants of the Washakie, Utah, group provide another key source of information on sporting activities engaged in by the Northwestern Shoshone. These three key sources are combined for the first time, in this essay, to bring to light the fascinating stories of Shoshone athletics from 1903 to 1929. 相似文献
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148.
Abstract This research compares the prevalence of hypertension in a group of adult masters swimmers with an age and sex matched cohort from the 2008 NHANES (National Health and Nutrition Examination Survey), used to represent the general population in the United States. Masters swimmer data were obtained from a one-time survey of all United States Masters Swimming (USMS) members. Both datasets included demographics, drug therapy, diseases and health status. Characteristics of swimming sessions as well as perceptions of impact of medications on exercise were also collected from the USMS respondents. Of 1346 completed surveys from USMS respondents, 15.8% self-identified as having hypertension while 36.2% participants in the NHANES survey suffered from hypertension (P < 0.001). The two groups were well matched for age and gender but the USMS group was primarily Caucasian, higher income, higher education, and reported higher health status. In the USMS group, not only was hypertension less prevalent but those who suffered from hypertension took fewer medications (P = 0.04) to manage their hypertension than in the NHANES group. Additionally, The USMS group suffering from hypertension considered themselves healthier (P < 0.001) than the NHANES group. 相似文献
149.
David Ronfeldt 《The Information Society》2013,29(4):243-296
Abstract The government world lags behind the business world in feeling the effects of the information technology revolution and related innovations in organization. But government may change radically in the decades ahead. This essay fields a concept— cyberocracy—to discuss how the development of, and demand for access to, the future electronic information and communications infrastructures (i.e., cyberspace) may alter the nature of the bureaucracy. Although it is too early to say precisely what a cyberocracy may look like, the outcomes may include new forms of democratic, totalitarian, and hybrid governments. Optimism about the information revolution should be tempered by a constant, anticipatory awareness of its potential dark side. 相似文献
150.
In recent years there has been a growing interest in arming physical education teachers with critical pedagogies. The purpose of this study was to determine the influence of a critically oriented methods course and early field experience (EFE) on 20 preservice teachers' (PTs) conceptions of the teaching–learning process. Data were collected using the critical incident technique and a reflective questionnaire. They were analyzed by employing the analytic induction method. Results indicated that the inward focus of the methods course and EFE on the analysis of teaching had a considerable influence on the PTs. Conversely, the outward focus on curriculum studies as well as four permeating themes (elitism, racism, classism, and sexism) appeared to have virtually no impact on them at all. Possible reasons for and implications of these findings are discussed. 相似文献