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In this study, we wished to determine whether the changes in metabolism observed during exercise in the cold are associated with changes in interleukin-6 (IL-6) and/or its soluble receptors. Eight healthy male participants performed 1 h of cycling exercise at 70% VO2max in a control (20 degrees C) and cold (0 degrees C) environment. Plasma concentrations of IL-6, soluble IL-6 receptor (sIL-6R), and sgp130 were measured before exercise, at 30 and 60 min of exercise, and 60 min after exercise. Substrate oxidation was estimated through measures of pulmonary gas exchange recorded between 50 and 55 min of cycling. Exercise in the cold resulted in an increase (P < 0.05) in carbohydrate oxidation (mean 2.58 g.min(-1), s = 0.49 at 20 degrees C vs. 2.85 g.min(-1), s = 0.58 at 0 degrees C) and a decrease (P < 0.05) in fat oxidation (0.55 g.min(-1), s = 0.17 at 20 degrees C vs. 0.38 g.min(-1), s = 0.16 at 0 degrees C) compared with the control trial. Interleukin-6 concentrations were elevated (P < 0.05) after 60 min of exercise in both the cold and control trials, with no differences between trials at any instant. Neither sIL-6R nor sgp130 was affected by exercise or the environment. The alterations in carbohydrate and fat utilization during 1 h of exercise in the cold are not paralleled by changes in plasma concentrations of IL-6 or its soluble receptors. 相似文献
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Robert Patterson 《Journal of The Franklin Institute》1877,104(5):301-302
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The paper examines the links between a recent focus in Australian universities on 'generic skills' or 'graduate qualities', and national employment policies directed at developing employment-related 'key competencies'. It examines the attempt by a team of teacher educators in Australia to develop curricula that would meet the goals of national workplace policy initiatives, while retaining the traditional university concern of teaching critical evaluation of information and social practice. The specific example is the teaching of sociology within a teacher education programme. However, the examples and analysis offered here would be of interest to university teachers working with students in any professional degree programme where there is an expectation that students will be able to understand and apply sociological knowledge within their professional field. The project was framed within the policy context of 'meeting students' needs' . 相似文献
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Teacher behavior,student interest and affective learning: putting theory to practice 总被引:2,自引:0,他引:2
Keith Weber Matthew Martin Brian Patterson 《Journal of Applied Communication Research》2013,41(1):71-90
Students of Project Adapt (PA), an instructional program for at-risk middle school students in Brooklyn NY, have displayed startling improvement on cognitive outcome measures. Teacher given grades and standardized tests illuminate the progress students have made since entering the program. The current investigation attempts to analyze PA on students' affective responses in a pre/post-test experimental design. Upon entering PA, students completed measures of interest, affect, and their previous teachers' behavior (pre). These ratings were then compared to end of year ratings on the same instruments (post). Results indicate students' perceive PA teachers utilizing different behaviors than their previous teachers. Additionally, student affect and interest increased significantly. Results of this study have implications for both instructional researchers and educational practitioners. 相似文献
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“Masculine” vs. “feminine” strategies in political ADS: Implications for female candidates 总被引:1,自引:0,他引:1
Anne Johnston Wadsworth Philip Patterson Lynda Lee Kaid Ginger Cullers Drew Malcomb Linda Lamirand 《Journal of Applied Communication Research》2013,41(1-2):77-94
This study explored several research questions concerning strategies typically said to be beneficial for female political candidates. Six 60‐second videotaped political commercials were produced featuring a female “candidate”, each containing either a “masculine” or a “feminine” strategy. The strategies were aggressive, nonaggressive, career, family, ambitious, and nonambitious. Each political commercial was inserted into a set of four locally produced, nonpolitical ads. Six groups of students were randomly assigned to each of the six treatment groups. After viewing the commercials, subjects were asked to fill out a questionnaire to measure response to the candidate and to the ads through semantic differentials and Likert‐scale questions. Results from the study indicate that the “aggressive” strategy worked better in comparison with the “nonaggressive” strategy and the “career” strategy worked better in comparison with the “family” strategy. Few significant differences were found between the “ambitious” and the “nonambitious” strategies. Several implications for female candidates are discussed. 相似文献
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Abstract Despite the popularity of open-wheel car racing, scientific literature about the physical characteristics of competitive race car drivers is scarce. The purpose of this study was to compare selected fitness parameters of experienced and junior open-wheel race car drivers. The experienced drivers consisted of five Formula One, two GP2 and two Formula 3 drivers, and the nine junior drivers drove in the Formula Master, Koenig, BMW and Renault series. The following fitness parameters were tested: multiple reactions, multiple anticipation, postural stability, isometric upper body strength, isometric leg extension strength, isometric grip strength, cyclic foot speed and jump height. The group differences were calculated using the Mann-Whitney U-test. Because of the multiple testing strategy used, the statistical significance was Bonferroni corrected and set at P < 0.004. Significant differences between the experienced and junior drivers were found only for the jump height parameter (P = 0.002). The experienced drivers tended to perform better in leg strength (P = 0.009), cyclic foot speed (P = 0.024) and grip strength (P = 0.058). None of the other variables differed between the groups. The results suggested that the experienced drivers were significantly more powerful than the junior drivers: they tended to be quicker and stronger (18% to 25%) but without statistical significance. The experienced drivers demonstrated excellent strength and power compared with other high-performance athletes. 相似文献
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