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The purpose of this investigation was to study the effects of an acute bout of aerobic exercise on state anxiety of women while controlling for iron status (hemoglobin and serum ferritin). Participants were 24 active women, ages 18-20 years (n = 12) and 35-45 years (n = 12). In addition to a nonexercise control condition, participants completed one exercise bout at 60% maximal oxygen uptake (VO2max) and one at 80% VO2max. Each exercise session consisted of a 33-min bout in which participants exercised at their target intensities for a 20-min segment. Immediately before each exercise trial, participants were given the Spielberger State Anxiety Inventory (SAI). The SAI was again administered immediately following the exercise session and at 30, 60, and 90 min postexercise. Data were analyzed using an Age x Intensity x Time (2 x 3 x 5) repeated measures analysis of covariance (ANCOVA) with iron status serving as the covariate. The ANCOVA on state anxiety yielded significant effects for time (p < .0001, eta2(p) = .48), the Intensity x Time interaction (p = .0006, eta2(p) = .19), and the Intensity x Age interaction (p = .04, eta2(p) = .15). All three exercise conditions (including control) showed a decline in state anxiety across time, but the 80% VO2max condition showed a sharper decline. Intensity of exercise conditions did not differ in state anxiety at baseline or immediately after exercise, but a difference favoring the 80% VO2max condition over the control condition emerged at 30 min postexercise. After controlling for iron status, older women who exercised at 80% VO2max exhibited lower SAI scores compared to the control condition. 相似文献
174.
Inspiratory muscle fatigue may occur in as little as 6 min during high-intensity spontaneously breathing exercise. The aims of this study were to determine whether inspiratory muscle fatigue occurs during swimming exercise and whether inspiratory muscle strength differs between the supine and standing body positions. Seven competitive swimmers were recruited to perform a single 200 m front-crawl swim, corresponding to 90-95% of race pace. Inspiratory muscle strength was measured at residual volume using a hand-held mouth pressure meter that measured maximal inspiratory pressure in the upright and supine positions. At baseline, maximal inspiratory pressure in the supine position was significantly lower than maximal inspiratory pressure in the upright position (112 +/- 20.4 and 133 +/- 16.7 cmH2O, respectively; P < or = 0.01). Post-exercise maximal inspiratory pressure in the supine position (80 +/- 15.7 cmH2O) was significantly lower than baseline maximal inspiratory pressure in the supine position (P < or = 0.01). The results indicate that a single 200 m front-crawl swim corresponding to 90-95% of race pace was sufficient to induce inspiratory muscle fatigue in less than 2.7 min. Furthermore, although diaphragm muscle length is optimized when supine, our results indicate that the force output of the diaphragm and inspiratory accessory muscles is greater when upright than when supine. 相似文献
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Pam Fochtman 《Publishing Research Quarterly》2007,23(4):254-261
After settling in to his second term, Brazil’s president Lula da Silva has pledged to improve on his country’s woefully inadequate
education system. This means addressing illiteracy, which is one of Brazil’s most serious development issues. While Brazil
has the potential to be one of the world’s largest economies, it is hampered by high rates of functional illiteracy. Furthermore,
those that can read are non-readers. Consequently the Brazilian government has pledged to resolve illiteracy and launched
a nationwide reading program in 2005 with the optimistic goal of increasing the national reading rate by 50%. The article
analyzes the political risk in Brazil in light of the da Silva administration’s stated objectives. It will also assess the
impact of state literacy campaigns will have on the publishing industry and the potential for investment in the country. Finally,
it will discuss the importance of foreign investors in Brazil’s development goals. 相似文献
177.
Points of convergence: seamless long-term access to digital publications and archival records at library and archives Canada 总被引:1,自引:0,他引:1
In 2004, Canada’s national library and national archives merged to form Library and Archives Canada (LAC). LAC has become more than the sum of its parts, creating synergies between library and archives collections and services, realizing efficiencies and satisfying user demands for seamless access to all holdings. LAC has already created and launched Fed Search, an online search tool that provides clients with single-search access to library, archives and online collections. LAC is in the process of building a Trusted Digital Repository that will combine ingest, preservation, management and dissemination services for archives and library collections. 相似文献
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Bailey P Derbyshire J Harding A Middleton A Rayson K Syson L 《Health information and libraries journal》2007,24(Z1):77-85
Background: The Government's nursing recruitment campaign has widened access for those wishing to enter the profession, resulting in some students entering university with clinical experience but little experience of academic writing or using libraries. For these students, the library and study advice staff have an important role to play in helping them acquire appropriate information literacy and study skills. Objective: To evaluate the impact of workshops supplementing online instruction in study skills on students’ study and writing skills, and level of information literacy. Methods: A small group of pre‐registration nursing students identified as needing support with information literacy and study skills participated in focus groups to identify areas of concern, and were offered four remedial workshops. A follow‐up focus group explored whether the students’ needs had been addressed. Further evaluation of the workshops’ impact was completed by diagnostic testing within the University's information literacy programme, Skills Plus. Outcomes: The results showed that all students who attended at least one workshop improved their academic grade in their next assignment. Qualitative data indicated that the students’ confidence level and information literacy, including referencing skills, had improved. Conclusion: Evaluating the impact of this intervention has provided the evidence to demonstrate the value of this additional support. 相似文献
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This article features a discussion about how Pierce County (Washington) Library’s 2013 budgeting process and budget document explain budget cuts and service changes to users and taxpayers within the context of the library’s continuing effort to improve operational efficiency and maintain valued core, customer, and community services. Pierce County Library is an independent municipal corporation established by state law and is funded from a separate property tax levy as a junior taxing district. 相似文献