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361.
Ibai Garcia-Tabar Iñaki Llodio Luis Sánchez-Medina Xabier Asiain Javier Ibáñez 《Journal of sports sciences》2017,35(4):385-392
This study aimed to validate the use of a single blood lactate concentration measure taken following a 12 km h?1 running stage (BLC12) to predict and monitor fixed blood lactate concentration (FBLC) thresholds. Three complementary studies were undertaken. Study I: the relationships between BLC12 and the running speeds at FBLC of 3 mmol L?1 (S3mM) and 4 mmol L?1 (S4mM) measured during a multistage running field test were examined in 136 elite athletes. Study II: data from 30 athletes tested one year apart were used to test the predictive capacity of the equations obtained in Study I. Study III: 80 athletes were tested before and after an intensified training period to examine whether training-induced changes in FBLC thresholds could be predicted and monitored by BLC12. Study I: BLC12 was significantly (P < 0.001) and inversely related to S3mM (R2 = 0.89) and S4mM (R2 = 0.95). Study II: prediction models yielded robust correlations between the estimated and measured FBLC thresholds (r = 0.94–0.99; P < 0.001). Study III: estimated changes predicted actual training-induced changes in FBLC thresholds (r = 0.81–0.91; P < 0.001). This study gives empirical support to use a single lactate measure during a sub-maximal running field test as a simple, low-cost and practical alternative to FBLC thresholds in athletes. 相似文献
362.
Rick Oser Ellen Beck Jose Luis Alvarado Valerie Ooka Pang 《Multicultural Perspectives》2014,16(1):26-34
A comprehensive school and community wellness plan was developed and implemented to transform Lemon Grove Academy for the Sciences and Humanities, an urban school, where student achievement and faculty satisfaction has soared. The school has become the center for the local neighborhood where culture, language, and equity are valued. The school's Comprehensive Wellness Plan includes student wellness, family wellness, staff/faculty wellness, and environmental wellness. 相似文献
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This paper establishes a structural typology of the organisational configurations of public research organisations which vary in their relative internal sharing of authority between researchers and managers; we distinguish between autonomous, heteronomous and managed research organisations. We assume that there are at least two sources of legitimate authority within research organisations, one derived from formal hierarchy (organisational leadership) and another derived from the research community (professional); the balance of authority between researchers and managers is essentially structural but is empirically mediated by the funding portfolio of organisations and the corresponding endowment of resources at the disposal of leaders or researchers. Changes in the level, sources and strings of organisational and individual research funding are expected to affect the balance of internal authority in different ways depending on the organisational configuration, and to open the door to the influence of external actors in the development of research agendas. 相似文献
365.
Iván Clavel San Emeterio Jorge García-Unanue Eliseo Iglesias-Soler Jose Luis Felipe Leonor Gallardo 《European Journal of Sport Science》2019,19(2):217-224
Research question: The increase of physical exercise in fitness centres has turned these facilities in important active lifestyle promoters. However, only between 30% and 60% of subscribers still linked to the sports centre after a year. The aim of this study is to design a model to predict the drop out in fitness centres. Research methods: Monthly data corresponding to the actual behaviour of 14,522 members of three sport centres in Spain were recorded over the course of one year. In order to calculate the likelihood of drop out, logistic regressions were used to create predictive models for each centre. Results and findings: It was possible to predict abandonment of users of sport centres from their historical behaviour, although the predictive models obtained for each centre were not completely coincident. The effectiveness of the models was around 70%. Implications: The analysis of users’ behaviour in a fitness centre can allow to avoid the drop out and therefore the abandonment of physical activity. Segmenting the customers based on the likelihood of drop out may be useful for improving the effectiveness of the strategies of loyalty and for optimizing the organization of human and material resources. 相似文献
366.
Information technology (IT) has become a powerful tool in today's business world. One specific impact of IT has been the development of the virtual office and organization. This paper discusses some issues associated with the virtual office. Some advantages and disadvantages of the virtual office are summarized from both employees' and employers' perspectives. The behavior engineering model (BEM) developed by Thomas Gilbert (1996) is used as a framework to analyze the different factors related to performance in the virtual office. Additionally, the application of other concepts from human performance technology (HPT) and organizational behavior management (OBM) perspectives are suggested. Some future research guidelines are discussed and the need to further develop experimental and more controlled data-based studies are pointed out. 相似文献
367.
Jonquil D. Feldman Emme Lopez Christine S. Gaspard Karen D. Barton Luis F. Barcenes III 《Medical reference services quarterly》2018,37(1):10-18
At an academic health science center, librarians identified problems, weaknesses, and strengths in reference services. The on-call reference schedule was discontinued and a question flowchart was developed for circulation staff. Only research questions were referred to librarians, who would respond if available. Circulation staff perceived the unscheduled, voluntary model was not working well for the patrons or the staff. After two months, the schedule was reinstated with a hybrid version of the previous on-call format. In the process of changing the service model, the library staff also underwent a cultural change. 相似文献
368.
Luis M. Vaquero Luis Rodero-Merino Félix Cuadrado 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):371-384
Online learning platforms offer students the option of sharing content. They have become common tools in many universities over the last 10 years. But there is little information about how content spreads in the classroom, ie, how information cascades appear and evolve and what factors are relevant for the formation of cascades. This work analyses information cascades in the classroom, bringing new insights on student learning: students do not share much content, they prefer to share the content they find themselves as opposed to professor-given content, they share more data towards the end of the course and they do it in bursts. The paper also reveals different behaviour by high-performing students: their interactions are distributed more evenly over the term, their behaviour is more stable and they tend to share documents faster than low-performing students. Documents with high information tend to be less shared. Documents with fewer well-known entities are also shared fewer times. Paradoxically, high-performing students exchange more documents with high information, compared to mid- and low-performing students. 相似文献
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