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91.
Gabriel J. Pruna William P. McCormack Adam R. Jajtner Jeremy R. Townsend Jonathan D. Bohner 《European Journal of Sport Science》2016,16(1):72-79
The purpose of this study was to examine the effect of the L-Alanyl-L-Glutamine dipeptide (AG) on cognitive function and reaction time (RT) following endurance exercise. Twelve male endurance athletes (23.5 ± 3.7 y; 175.5 ± 5.4 cm; 70.7 ± 7.6 kg) performed four trials, each consisting of running on a treadmill at 70% of VO2max for 1h, then at 90% of VO2max until exhaustion. One trial consisted of no hydration (DHY), another required ingestion of only a sports electrolyte drink (ED) and two trials required ingestion of a low dose (LD; 300 mg·500 ml?1) and high dose (HD) of AG (1 g·500ml?1) added to the ED. Cognitive function and reaction tests were administered pre- and post-exercise. Magnitude based inferences were used to analyze ? cognitive function and ? reaction test data. Results indicated that DHY had a possible negative effect on number of hits in a 60-sec reaction test compared to LD and HD, while ED appeared to have a negative effect compared to HD. Analysis of lower body quickness indicated that LD and HD were likely improved in comparison to DHY. Performance on the serial subtraction test appeared to be possibly better in ED than DHY, while other comparisons between groups regarding cognitive function were unclear. In conclusion, rehydrating with AG during submaximal exercise may maintain or enhance subsequent RT in upper and lower body activities compared to DHY. These same effects were not apparent when participants consumed ED. 相似文献
92.
AbstractHigh school underrepresented minority students in the US are at an increased risk of dropping out of the STEM pipeline. Based on expectancy-value theory, we examined if Latino students’ perception of support from parents, siblings/cousins, teachers, and friends in 10th grade predicted their science ability self-concepts and values, which in turn predicted their classroom engagement. Survey data were collected from 104 Latino high school students and their science teachers. The findings suggest that adolescents’ perceptions of overall support and home-based support predicted adolescents’ science ability self-concepts at 10th grade while controlling for their 9th grade self-concepts. Although adolescents reported high support from teachers, teacher or school-based support alone was not a strong correlate of their motivational beliefs. Perceived support was indirectly related to classroom engagement through adolescents’ ability self-concepts. Feeling supported across home and school may be necessary to sustain adolescents’ science motivational beliefs and, in turn, their science classroom engagement. 相似文献
93.
Gabriel Hervas José Luis Medina María Paz Sandín 《Journal of Research on Technology in Education》2020,52(4):461-473
AbstractLesson study (LS) is a process through which teachers design, teach and discuss a lesson collaborating with colleagues. Sometimes, it includes video recording the lesson so teachers can use videos to later discuss the lesson and its improvement, however, there is little research addressing the consequences of doing it. This article investigates participants’ perceptions and use of video within LS. Results show that participants perceived video in LS as viable and with potential to stimulate reflection and to improve lessons, but also evince that video affects the outcomes, management and sustainability of LS. We analyze and discuss its potential and the challenges it poses, suggesting ideas for its implementation. 相似文献
94.
Leila Selimbegovic Armand Chatard Gabriel Mugny 《European Journal of Psychology of Education - EJPE》2007,22(3):275-290
A study was conducted to explore expert influence as a possible way to encourage girls’ mobility towards math- and science-related
careers. High school students were exposed to an expert source presenting “scientific evidence” that contrary to stereotype,
girls are better than boys in all subject domains. Beliefs related to stereotype content, self-evaluations and intentions
to engage in math- and science-related careers were assessed before and after exposure to influence. While most participants
were influenced at the level of stereotype content, only girls who did not personally believe the stereotype prior to influence,
and boys who did, increased their intentions to engage in math/science-related careers. Implications of the findings are discussed,
with an emphasis on the possible ways to influence girls who firmly believe in the stereotype. 相似文献
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97.
Larkin Lamarche Kimberley L. Gammage Philip J. Sullivan David A. Gabriel 《Measurement in physical education and exercise science》2013,17(2):120-134
This study examined the psychometric properties of the Self-Presentational Efficacy Scale (SPES) developed by Gammage, Hall, and Martin Ginis (2004). University students (196 men and 269 women) completed the SPES and measures of social physique anxiety, fear of negative evaluation, and physical activity. Participants also completed the SPES a second time. A series of multivariate data analyses were conducted to examine the SPES's factor structure. Confirmatory factor analysis indicated a 3-factor model, with each factor representing a distinct latent variable. Acceptable internal consistency and test–retest reliability were found. Evidence of concurrent validity with respect to sex and exercise status was demonstrated. Convergent validity was also shown, as relationships to exercise participation and self-presentational anxiety were found. Future research should assess the reliability and validity of the SPES in other samples and the relative and unique contribution of the three factors in predicting exercise-related outcomes. 相似文献
98.
Ana MarÍa Perez Aguirre Patricia Zorzoli Paula Ramirez Ramona Oviedo Dora Vai Gabriel Lopardo 《Educational Action Research》2013,21(1):51-60
The authors present the Didáctica de las Prácticas Escolares Cotidianas – The Didactics of Everyday School Practice (DIPEC). From their point of view, it owes its specificity to certain special characteristics, one of which is the inevitable presence of concrete, immediate teaching action, which presents particular problems and therefore particular ways of dealing with them. This article includes an example of a problematic situation, the way it was handled using Paulo Freire's methodology and the action subsequently developed. 相似文献
99.
In this paper we describe and theorize about a computer‐supported and mediated educational research project which encourages cultural production and sustainability. We first describe the CD‐Golem project which was developed in light of the perceived needs of a Diaspora community's attempts to impart its youth with a sense of belonging and continuity. Next we characterize Cultural Education and discuss the theoretical rationale of our approach in the context of current theories of identity and cultural construction, multicultural education and computer‐supported collaborative learning. We conclude by reviewing briefly and evaluating critically some of the lessons we have learned in our first years of activity. 相似文献
100.
The goals of this study are to describe the motivations and aims of young Israelis for choosing Reform rabbinical studies and to explore how the Israeli and Reform contexts are manifested in students’ motivations and aims. This question was examined by a study of the personal background, the decision-making process, and the motivations of 10 students in the Reform rabbinical program at the Jerusalem campus of Hebrew Union College (HUC). Though most of the students’ exposure to Reform Judaism occurred following an encounter with North American Reform Jewry, the choice of rabbinical studies was described by most of the participants as the result of a sense of incongruity between the personal, cultural, and professional dimensions of their lives. 相似文献