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排序方式: 共有250条查询结果,搜索用时 15 毫秒
61.
The objective of this study was to use self-determination theory to analyze the relationships of several motivational variables with exercise dependence. The study involved 531 exercisers, ranging in age from 16 to 60 years old, who responded to differentquestionnaires assessing perception of motivational climate, satisfaction of basic psychological needs, motivation types, and exercise dependence. The results of multiple mediation analysis revealed that ego-involving climate and perceived competence positively predicted exercise dependence in a directed and mediated manner through introjected and external regulation. Gender and age did not moderate the analyzed relationships. These results allow us to better understand the motivational process explaining exercise dependence, demonstrating the negative influence of the ego-involving climate in the context of exercise. 相似文献
62.
Pedro Ángel Latorre Román Fernando Redondo Balboa Juan Párraga Montilla Víctor Manuel Soto Hermoso Pedro José Consuegra González Felipe García Pinillos 《Journal of sports sciences》2019,37(5):477-483
The purpose of this study was to determine the foot strike patterns (FSP), rearfoot position at initial contact (RPic, i.e., No INV/EVE) and foot rotation in children in relation to age. A total of 932 children aged 3 to 16 years participated in this study. A sagittal and frontal-plane video was recorded using a high-speed camcorder to analyse these variables. There is a significant increase (p < 0.001) of rearfoot strike patterns (RFS) prevalence in relation to age; e.g. preschool children (3–6 years old) displayed an RFS prevalence 46.65% and the adolescent population(15–16 years old) an RFS prevalence 92.20%. The total RFS prevalence in all samples was 69.25%. There was a significant reduction (p < 0.001) of prevalence of RPic in relation to age groups; preschool children displayed a prevalence of RPic 60.37% and the adolescent population 10%. There was a significant reduction (p < 0.001) of prevalence of no foot rotation in relation to age groups; preschool children displayed a prevalence of no foot rotation 48.95% and the adolescent population 13.55%. In conclusion, FSP in children are influenced by age. It is noteworthy that the RFS prevalence of children is lower in comparison to the adult population. 相似文献
63.
Sprinting analysis of elite soccer players during European Champions League and UEFA Cup matches 总被引:1,自引:1,他引:0
Di Salvo V Baron R González-Haro C Gormasz C Pigozzi F Bachl N 《Journal of sports sciences》2010,28(14):1489-1494
It has been suggested that assessment of high-intensity activities during a match is a valid measure of physical performance in elite soccer. Recently, sprinting activities have been analysed in more depth. The aim of this study was to develop a detailed analysis of the sprinting activities of different playing positions during European Champions League and UEFA Cup competitions. Altogether, 717 elite outfield soccer players were evaluated throughout 2002-2006 using ProZone? (Leeds, UK). Sprinting (explosive and leading) was analysed for each playing position. To compare positional differences, a Kruskal-Wallis analysis was performed. Differences were found among positions for total number of sprints and total sprint distance covered: wide midfielders > (attackers = wide defenders) > central midfielders > central defenders (P < 0.001), as well as for explosive sprints: (wide midfielders = attackers = wide defenders) > central defenders, wide midfielders > central midfielders > central defenders and attackers = wide defenders = central midfielders (P < 0.001), and leading sprints: wide midfielders > (attackers = wide defenders) > central midfielders > central defenders (P < 0.001). For each group, there were no differences in ratio of explosive to leading sprints. Wide midfielders performed a higher number of sprints in all five distance categories than all other positions. This study showed that sprinting characteristics are influenced by position. Wide midfielders have to complete additional high-intensity activities during training sessions compared with the other positions to achieve the performance level required during the match. 相似文献
64.
65.
José Carlos Núñez Natalia Suárez Rebeca Cerezo Julio González-Pienda Pedro Rosário Rosa Mourão 《教育心理学》2015,35(6):726-746
Homework (HW) is one of the most common school-related activities among parents, students and teachers. However, the need to assign HW to students has been extensively debated. The present investigation examines the relationship between specific HW variables (i.e. amount of HW completed, time spent on HW and perceived quality of HW time management) and academic achievement, while controlling for students’ gender and grade level. Participants included 454 students (ranging from 10 to 16?years of age) from three schools in northern Spain. A multivariate analyses of variance and path analyses showed that the amount of HW completed decreased with increased schooling, as did students’ perceived quality of HW time management. Data from hierarchical regression analyses completed by path analyses provided evidence that time spent on HW conjointly with perceived quality of HW time management explains how academic achievement is mediated by the amount of HW completed. These findings deepen the understanding of the complex impact of time spent on HW and on academic achievement. 相似文献
66.
Linda Prieto Lorena Claeys Everardo Lara González 《Journal of Latinos & Education》2015,14(2):125-134
This article exposes the ancient Nepohualtzitzin as an important contemporary mathematical tool. The design and development of Nepohualtzitzin Ethnomathematics Clubs (NECs) in predominantly Latina/o and low-income schools is also presented. NECs provide informal learning opportunities to develop and strengthen cultural connections to and abilities in mathematics for bicultural-bilingual learners, their parents, and teacher candidates. The formation of NECs is made possible through transnational alliances developed over time between the University of Texas at San Antonio, Secretaría de Educación Pública de México (Ministry of Public Education of Mexico), Coahuiltecan Indian Nation, Aztlán Associates, Danza Azteca Xinachtli, and Tzicatl—Community Development Corporation. 相似文献
67.
This article underlines some key traits in the make-up of postmodern footballers. Specifically, we discuss the changes in celebrating goals as sporting events in recent years. We contribute a new perspective on the birth of the postmodern ‘me-event’ compared with the ‘goal-event’ typical of modern times. To support our contribution empirically, we use two methodological dimensions: the discourse analysis of international football legislation and photographic and video archive to illustrate the diversity of phenomena with hermeneutic sampling criteria. The differences between the modern and postmodern way of celebrating a goal, individually and/or collectively, highlight a process of social change in which the individual way of celebrating advances rapidly in a society where there is ever greater media coverage and commercialism. 相似文献
68.
Aurora C. Vandewark 《The Journal of perinatal education》2014,23(3):135-141
Breastfeeding is an important health topic worldwide, although lack of breastfeeding knowledge is noted among health-care professionals. The purpose of this study was to explore the relationship between breastfeeding knowledge and attitudes in undergraduate nursing students at the beginning and end of their clinical education. An electronic survey, based on the Iowa Infant Feeding Attitude Scale and the Breastfeeding Knowledge Questionnaire, was administered. Attitude scores did not differ significantly between groups. Total knowledge scores between groups differed modestly (p = .006). Correlations between total knowledge and total attitude scores were found (r[89] = .482, p < .000). Respondents reported that nursing education effectively teaches breastfeeding and that breastfeeding advocacy through patient education is a crucial nursing role. 相似文献
69.
Ignacio González López 《Higher Education in Europe》2005,30(3-4):321-334
The primary objective of this paper has been to define a quality university from the user's perspective, based on what students expressed regarding different aspects of the institution. Two methodologically different formats of collecting information have assisted in testing the coherence of their opinions. A qualitative and quantitative approach helped to evaluate the results. 相似文献
70.