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131.
Respiratory muscle fatigue has been reported following short bouts of high-intensity exercise, and prolonged, moderate-intensity exercise, as evidenced by decrements in inspiratory and expiratory mouth pressures. However, links to functionally relevant outcomes such as breathing effort have been lacking. The present study examined dyspnoea and leg fatigue during a treadmill marathon in nine experienced runners. Maximal inspiratory and expiratory pressure, peak inspiratory and expiratory flow, forced vital capacity, and forced expiratory volume in one second were assessed before, immediately after, and four and 24 hours after a marathon. During the run, leg effort was rated higher than respiratory effort from 18 through 42 km (P < 0.05). Immediately after the marathon, there were significant decreases in maximal inspiratory pressure and peak inspiratory flow (from 118 +/- 20 cm H(2)O and 6.3 +/- 1.4 litres x s(-1) to 100 +/- 22 cm H(2)O and 4.9 +/- 1.5 litres x s(-1) respectively; P < 0.01), while expiratory function remained unchanged. Leg maximum voluntary contraction force was significantly lower post-marathon. Breathing effort correlated significantly with leg fatigue (r = 0.69), but not inspiratory muscle fatigue. Our results confirm that prolonged moderate-intensity exercise induces inspiratory muscle fatigue. Furthermore, they suggest that the relative intensity of inspiratory muscle work during exercise makes some contribution to leg fatigue.  相似文献   
132.
Current methods of assessing coordination in Paralympic classification are non-instrumented and are based on ordinal scales of measurement and therefore impede the development of evidence-based methods of classification. This paper describes an instrumented battery of tests that measure impaired coordination in a way that will permit evidence-based classification. Test–retest reliability and normative values for each of the tests are reported. Twenty participants visited the laboratory on two occasions, each time completing 11 tests: three running-specific, lower-limb reciprocal tapping tests (yielding five outcome measures); four throwing-specific, upper-limb discrete tapping tests (yielding four outcome measures); and four wheelchair-specific, upper-limb reciprocal tapping tests yielding seven outcome measures. Reliability was evaluated using Intra-class Correlation Coefficients (ICCs), Standard Error of Measurement, Limits of Agreement and Paired t-tests. ICCs for fourteen of the 16 outcome measures were excellent (ICC ≥ 0.80), although systematic bias was evident in two of these—a unilateral, running-specific lower-limb tests on the non-dominant side, and a unilateral wheelchair-specific upper limb test on the dominant side. ICCs for two tests—a bilateral wheelchair-specific upper limb test (0.74), and a unilateral wheelchair-specific upper limb test on the non-dominant side (0.54)—were good and fair respectively. Results indicate that 12 of the measures evaluated have measurement properties that will facilitate the development of evidence-based methods of Paralympic classification in athletics. Positional adjustment and increased familiarization may improve reliability in the other four. Studies evaluating reliability of this test battery in people with coordination impairments are warranted.  相似文献   
133.
This study examines the interplay between maternal depression/anxiety and infant temperament's developmental trajectory in 1687 Swedish-speaking mother–infant dyads from Uppsala County (2009–2019), Sweden. The sample includes a high proportion of university-educated individuals and a low share of foreign-born participants. Maternal depressive and anxiety symptoms were assessed using the Edinburgh Postnatal Depression Scale during gestational weeks 17 and 32 and postpartum at week 6. Multinomial regression explored associations between maternal variables and infant temperament trajectories at 6 weeks, 12 months, and 18 months. Prenatal anxiety is associated with the high-rising infant difficult temperament trajectory, while prenatal depression/anhedonia is associated with the stable-medium trajectory, attenuated postpartum. Associations between infant temperament and maternal mood depended on timing (pre/postpartum) and symptom type (depression/anhedonia vs. anxiety).  相似文献   
134.
This article is an account of the decision by an independent school to participate in its local Healthy Schools Scheme. One of the factors that influenced this decision was the value the school gained from a pupil survey. The same survey was used to track the impact of the school's Personal, Social and Health Education curriculum and pastoral work on pupils' experience of the school, and academic achievement. In particular, the authors explore the role of survey analysis and consultancy advice in interpreting survey results and developing school practice. The survey contributed to pupil participation in school development. The use of an external consultant as critical friend was perceived as an aid to school reflection and self-review.  相似文献   
135.
136.
Foregrounding the primary school as a key cultural arena for the production and reproduction of sexuality and sexual identities, this article goes some way to addressing what are absent from many sociological portrayals of young children and schooling. Drawing on data derived from an ethnographic exploration into children's gender and sexual identities during their final year of primary school, the article examines how dominant notions of heterosexuality underscore much of children's identity work and peer relationships. The article further illustrates how boys and girls are each subject to the pressures of compulsory heterosexuality, where to be a 'normal' girl or boy involves the projection of a coherent and abiding heterosexual self. The implications of recognising children's sexual cultures and the pressures to conform to a heterosexual culture are discussed briefly in the concluding section.  相似文献   
137.
State testing programs regularly release previously administered test items to the public. We provide an open-source recipe for state, district, and school assessment coordinators to combine these items flexibly to produce scores linked to established state score scales. These would enable estimation of student score distributions and achievement levels. We discuss how educators can use resulting scores to estimate achievement distributions at the classroom and school level. We emphasize that any use of such tests should be tertiary, with no stakes for students, educators, and schools, particularly in the context of a crisis like the COVID-19 pandemic. These tests and their results should also be lower in priority than assessments of physical, mental, and social–emotional health, and lower in priority than classroom and district assessments that may already be in place. We encourage state testing programs to release all the ingredients for this recipe to support low-stakes, aggregate-level assessments. This is particularly urgent during a crisis where scores may be declining and gaps increasing at unknown rates.  相似文献   
138.
This article reflects on the specific challenges facing teaching assistants (TAs) when managing behaviour. It considers the variety of existing research into this area, and why the paucity of specific research is problematic. It discusses how difficulties in access to training, its availability, the levels of preparation for lessons, the lack of guidance on teacher and TA working relationships, all impact on the way TAs manage behaviour. The article also highlights some of the conflicts inherent within broader issues which impact, either positively or negatively, on TAs ability to manage behaviour, including TA role definition, deployment and the wider pedagogical aspects of their evolving role.  相似文献   
139.
This paper has two aims, first to examine the feasibility of using an omnibus survey to estimate the prevalence and characteristics of families who home educate and secondly to provide an empirical contribution to recent research on home education in the UK. Because there is no statutory requirement for families who home educate to register with the Local Authority, there are no nationally representative data on the prevalence and characteristics of the home educating population in this country. Therefore gathering data from a fully randomised sample of home educating families would be prohibitively expensive. In this study we used a national omnibus survey to collect data on the homeschooling experiences of over 6000 households from across the UK, of whom 52 were found to have engaged in homeschooling. Our findings estimate that around 1% of families with dependent children have home educated either on a full or part-time basis. Provision of home education was often episodic and reflects the diversity of the home educating population. While the findings presented here largely confirm previous work on home education in the UK, other work tends to be based largely in the home educating community and often lacks a comparison with the general population. Using an omnibus survey like the Opinions and Lifestyle Survey enables researchers to gather data from a nationally representative sample of a small and diverse social group.  相似文献   
140.
This paper examines the effect of a podcasting task on the examination performance of several hundred first‐year chemistry undergraduate students. Educational researchers have established that a deep approach to learning that promotes active understanding of meaning can lead to better student outcomes, higher grades and superior retention of knowledge over time. We attempted to promote such an approach by setting a task that involved student collaboration, contextualisation of content, and communication through new media, specifically creative podcasting. Examination results were used as a source of empirical evidence of changes in understanding and retention that occurred for students who completed this task. In comparing results across 2 years on similar questions related to the podcasting topics, we found a statistically significant improvement after introduction of the podcasting task on the questions related to one of the topics on which students had actively created their own podcasts (“acids & bases”), but not on the other (“oxidisation and reduction”). Improved learning outcomes in the form of better understanding and retention over time in at least one case suggest that under some circumstances creative podcasting may indeed help to promote a deep learning approach.  相似文献   
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