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排序方式： 共有144条查询结果，搜索用时 31 毫秒
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Kym Joanne Price Brett Ashley Gordon Stephen Richard Bird Amanda Clare Benson 《Journal of sports sciences》2020,38(9):970-984
ABSTRACTInterval exercise training is increasingly recommended to improve health and fitness; however, it is not known if cardiovascular risk is different from continuous exercise protocols. This systematic review with meta-analyses assessed the effect of a single bout of interval exercise on cardiovascular responses that indicate risk of cardiac fibrillation and infarction compared to continuous exercise. Electronic databases Medline, CINAHL, Embase, Scopus and Cochrane were searched. Key inclusion criteria were: (1) intervals of the same intensity and duration followed by a recovery period and (2) reporting at least one of blood pressure, heart rate variability, arterial stiffness or function. Cochrane Risk of Bias tool and GRADE approach were used. Meta-analyses found that systolic blood pressure responses to interval exercise did not differ from responses to continuous exercise immediately (MD 8 mmHg [95% CI ?32, 47], p = 0.71) or at 60 min following exercise (MD 0 mmHg [95% CI ?2, 1], p = 0.79). However, reductions in diastolic blood pressure and flow-mediated dilation with interval exercise were observed 10–15 min post-exercise. The available evidence indicates that interval exercise does not convey higher cardiovascular risk than continuous exercise. Further investigation is required to establish the safety of interval exercise for clinical populations. 相似文献
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Practice‐led research in art and design has now come of age and can take its place alongside other forms of research at the academic ‘high table’. It no longer needs to be treated with ‘special consideration’ as a new form of intellectual enquiry. The research craft developed by those involved in practice‐led research admits them to a broader community of practice engaged in questioning the conceptual basis of how we perceive and make sense of the world around us. The objective/subjective divide that preoccupied an earlier generation of academics has eventually been replaced by a more nuanced epistemological framework able to embrace PhDs that include non‐textual artefacts as part of their exposition. An increasing number of academic institutions around the world have taken up the debate and now participate in practice‐led research programmes. However, for early‐career researchers in these fields there are still many hurdles to overcome, some of which are unique to this form of endeavour, as we outline. This article has been developed from a series of seminars and workshops presented by the authors to early‐career practice‐led researchers as part of their Project Dialogue programme which seeks greater engagement between the arts and sciences. 相似文献
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Brett Christophers 《Journal of Cultural Economy》2017,10(1):63-80
This article explores the wide-ranging influence of the yield curve – a diagrammatic device for representing the term structure of effective interest rates on market-traded debt instruments – in contemporary monetary, financial and economic life. Drawing on the expanding literature on financial performativity, including within the field of cultural economy, the article submits that by virtue of its centrality to multiple, closely interconnected and often highly recursive sets of relations between economies, financial markets and central banks, the yield curve is performative at a range of different levels; and, parsing various different extant understandings of performativity, the article theorizes the particular nature of such performativity in the yield curve context. Against the grain of the bulk of the literature on financial performativity, however, the article also endeavors to connect the yield curve’s performativity explicitly to questions of privilege (the privileges of representation) and power (the power to perform) and their unequal distribution. That is to say, the article argues that to understand the multidimensional performativity of the yield curve, we need to draw out its political as well as cultural economy. 相似文献
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Audrey J. Jaeger Stephany Brett Dunstan Karrie Gibson Dixon 《Peabody Journal of Education》2015,90(5):615-635
Students from rural areas face additional burdens, such as affordability, academic preparation, and lack of college-going resources that make seeking, enrolling, and attending college more difficult. Community colleges offer hope to achieve a college degree for many rural students, and well-developed articulation agreements can be one way of improving access for these students. 相似文献
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