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41.
运用结构方程模型方法对230名普通大学生课外体育锻炼的主要影响因素进行了实证分析。结果显示:研究采用的结构方程模型与研究假设和构想概念拟合度较好;锻炼条件、锻炼氛围和锻炼承诺三变量对大学生课外体育锻炼坚持行为有较好地预测和解释。其中,影响大学生课外体育锻炼坚持机制中起主导作用的是内因——参与体育锻炼的行为意图(锻炼承诺)。锻炼氛围对锻炼坚持行为的直接作用路径在有无锻炼承诺群体中均具有显著性意义,即能使个体从无锻炼承诺向有锻炼承诺转变,促进有锻炼承诺的群体更长久地坚持体育锻炼。 相似文献
42.
Matheus Amarante Do Nascimento Aline Mendes Gerage Danilo Rodrigues Pereira Da Silva Alex Silva Ribeiro Daniel Gomes Da Silva Machado Fábio Luiz Cheche Pina 《European Journal of Sport Science》2019,19(2):199-207
Objective: To analyse the effect of resistance training (RT) frequency on muscle mass, appendicular lean soft tissue, insulin-like growth factor 1 (IGF-1), testosterone, and their changes with detraining in older women. Methods: Forty-five physically independent older women (≥ 60?years) were randomly assigned to perform RT either two (G2X, n = 21) or three times/week (G3X, n = 24), during 12?weeks (8 exercises, 1 set of 10–15 repetition maximum). Muscle mass and appendicular lean soft tissue, IGF-1, testosterone, and dietary intake were measured at pre-training, post-training, and after detraining (12?weeks). Results: Muscle mass and appendicular lean soft tissue significantly increased post-training (G2X?=?+5.5% and G3X?=?+5.8%, P?P?P?Conclusion: We conclude that lower RT frequency is as effective as higher frequency to improve muscle mass and appendicular lean soft tissue, and to maintain testosterone and IGF-1. Additionally, detraining may reduce testosterone regardless of RT frequency. These results are specifically for community-dwelling older women and may not be generalized to other populations. 相似文献
43.
Tiago Julio Costa Pereira Fábio Yuzo Nakamura Mayra Tardelli de Jesus Claudio Luís Roveri Vieira Milton Shoiti Misuta Ricardo Machado Leite de Barros 《Journal of sports sciences》2017,35(4):361-368
The purpose of this study was to analyse the physical and technical performances of professional tennis players during official matches. The trajectories of eight players were obtained during matches, using an automatic tracking method. The distances covered and technical performances were analysed for the first and second sets. The athletes covered (mean ± standard deviation) a total of 1702.4 ± 448.2 m in the first set, 1457.6 ± 678.1 m in the second set and 3160.0 ± 880.1 in the entire match. No differences were found between the sets for the physical variables (lateral and forward displacements, distance covered per rally, per game and per set, and the percentage of time spent in each range of velocity). However, the distances covered by the athletes during the rallies in which they were serving (median = 5.2; interquartile range (IQR) = 6.7 m) were statistically smaller than when they were returning (median = 6.2; IQR = 7.7 m). Forehand ground stroke proficiency decreased from the first (mean ± standard deviation: 75.2 ± 4.11%) to the second set (mean ± standard deviation = 65.5 ± 14.3%). In conclusion, tennis players did not present reduced physical performance from the first to the second set. 相似文献
44.
通过近几年测量专业实践教学改革内容的阐述,指出了老专业如何适应市场需要进行改革,并通过产学合作,探讨最佳办学模式,为其它老专业改造提供了经验。 相似文献
45.
This work aims to evaluate the determinants of the consumption of artistic-cultural goods and services in Brazil, conceiving
this consumption as an activity with positive effects on the consumer and on the society as a whole. Using the human capital
approach, we estimate a model in which the expenditures on artistic-cultural goods and services depend on socio-economic,
educational and socio-demographic characteristics of the head of the household, and on variables that indicate the location
of the household. The results indicate that artistic-cultural expenditures are strongly determined by income and by the education
of the consumer. Furthermore, the expenditure differs regionally, which may occur due to supply variations or historic-cultural
distinctions. 相似文献
46.
Julie K. Kidd Timothy W. Curby Caroline E. Boyer K. Marinka Gadzichowski Deborah A. Gallington Jessica A. Machado 《Early education and development》2013,24(6):900-918
Research Findings: A total of 72 Head Start children (M age = 53.26 months, SD = 5.07) were randomly assigned to 4 conditions. Some were taught the oddity principle (choosing the object that differs from others in a group) and seriation (ordering objects on a dimension and inserting new objects into such orders), which are forms of thinking that develop naturally at about age 4. Others were taught letters or numbers or were engaged in art activities in sessions matched in frequency, timing, and extent. Toy animals were used as props in lessons that scaffolded the children's learning. Preschoolers in the cognitive group improved their cognitive skills significantly more than the others and also became better than the numbers or art groups at identifying letters, as measured by the Letters and Words scale of the Stanford Early School Achievement Test 2. This indicates that with improved oddity and seriation skills, children profited more from lessons and letter sounds offered to all children by their classroom teacher. Comparable results were demonstrated for the oddity and seriation instruction and progress in counting and adding and subtracting objects as measured by the Woodcock–Johnson III Applied Problems scale. Practice or Policy: The content and procedures embodied in this research enable children who are economically disadvantaged to make progress in learning letters and in numeracy when enrolled in preschool. Brief periods of such activities for most of the school year may be an effective supplement to lessons on letters, letter sounds, and numeracy offered in preschool curricula. 相似文献
47.
Özlem Özkanlı Maria de Lourdes Machado Kate White Pat O'Connor Sarah Riordan Jenny Neale 《Tertiary Education and Management》2013,19(3):241-257
This paper reports on the second phase of a multi‐country study examining cross cultural perspectives of gender and management in Higher Education Institutions (HEIs). It examines the broader labour market context and legislative frameworks for higher education in each country and then analyses the literature on women in university management. The paper presents the findings of research with male and female senior managers about their perceptions of women as HEI managers within changing organisational and management structures. It concludes that although HEI’s are now largely aware of barriers to women getting into and on in senior management, they have not addressed the organisational structures and cultures that perpetuate this inequity. 相似文献
48.
Fabiana Andrade Machado Fábio Yuzo Nakamura Solange Marta Franzói De Moraes 《Journal of sports sciences》2013,31(12):1267-1274
Abstract This study examined the influence of the regression model and initial intensity of an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and the endurance performance. Sixteen non-competitive, recreational female runners performed a discontinuous incremental treadmill test. The initial speed was set at 7 km · h?1, and increased every 3 min by 1 km · h?1 with a 30-s rest between the stages used for earlobe capillary blood sample collection. Lactate-speed data were fitted by an exponential-plus-constant and a third-order polynomial equation. The lactate threshold was determined for both regression equations, using all the coordinates, excluding the first and excluding the first and second initial points. Mean speed of a 10-km road race was the performance index (3.04 ± 0.22 m · s?1). The exponentially-derived lactate threshold had a higher correlation (0.98 ≤ r ≤ 0.99) and smaller standard error of estimate (SEE) (0.04 ≤ SEE ≤ 0.05 m · s?1) with performance than the polynomially-derived equivalent (0.83 ≤ r ≤ 0.89; 0.10 ≤ SEE ≤ 0.13 m · s?1). The exponential lactate threshold was greater than the polynomial equivalent (P < 0.05). The results suggest that the exponential lactate threshold is a valid performance index that is independent of the initial intensity of the incremental test and better than the polynomial equivalent. 相似文献
49.
Ana Flávia Machado Alexandre Rabelo Arthur Gomes Moreira 《Journal of Cultural Economics》2014,38(3):237-251
This paper analyzes the singularity of artistic cultural sector workers in the Brazilian metropolitan labor market, considering the job satisfaction of artists that Throsby proposes in his work preference model of artist behavior (1994). We also examine the effect of public expenditures on the income of workers in the cultural sector. Using 2002 to 2010 data from the Monthly Employment Survey (PME) and administrative records from Finance of Brazil (FINBRA), we estimate a probit model and a wage equation. In our model, we estimate wages as a function of: (1) sociodemographic characteristics of workers, (2) a variable for informal jobs, (3) the number of working hours, (4) a variable for the worker having another job, (5) per capita expenditures on culture interacted with a dummy for artistic cultural workers, (6) interactive binary variables involving place of residence and artistic cultural workers and (7) the predicted probability obtained by the probit model. This probability is estimated based on the likelihood of working in a creative activity, considering both workers from the cultural sector and other workers, controlled by: (1) sociodemographic characteristics of workers, (2) characteristics of their jobs, (3) dummies for the metropolitan regions and (4) willingness of creative workers to work additional hours interacted with the number of hours worked. Our results show that workers in the cultural sector are likely to work longer hours when compared to workers in other sectors. For our wage equation, the results suggest that women earn relatively less than men and blacks earn less than whites. Furthermore, earnings increase with age and the level of education. Formal workers obtain higher earnings when compared to informal ones. Finally, an increase in the per capita public expenditure on the cultural sector raises the income of workers in artistic cultural occupations. 相似文献
50.
Jorge Américo Dinis Machado Joselina Maria Pinto Barbosa Maria Amélia Duarte Ferreira 《Anatomical sciences education》2013,6(3):163-169
Radiological imaging is gaining relevance in the acquisition of competencies in clinical anatomy. The aim of this study was to evaluate the perceptions of medical students on teaching/learning of imaging anatomy as an integrated part of anatomical education. A questionnaire was designed to evaluate the perceptions of second‐year students participating in a clinical anatomy course over three consecutive academic years. A principal component analysis was used to evaluate the dimensionality of the questionnaire. The variables were summarized using frequencies, mean, median, 25th percentile, 75th percentile, minimum, and maximum. The results demonstrated that students felt the teaching of imaging anatomy influenced learning in the clinical anatomy course (mean = 4.5, median = 5.0) and subsequent clinical courses (mean = 4.4, median = 4.0). Regarding the imaging techniques used in the demonstration of anatomical structures, computed tomography (median = 5.0) and magnetic resonance imaging (median = 5.0) were highly rated. Students suggested the use of additional support material (37.6%) and favored a more practical approach. In conclusion, the results of this work highlight the value of imaging anatomy in learning human anatomy. Students' comments pointed out a need to focus teaching/learning programs toward a more practical rather than theoretical approach as well as a need to provide a better fit between sectional anatomy and clinical cases using imaging anatomy. In order to provide an optimal learning environment to students, it also seems important to create improved media material as an additional resource tool. Anat Sci Educ. © 2013 American Association of Anatomists. 相似文献