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81.
Zachary M. Gillen Marni E. Shoemaker Brianna D. McKay Joel T. Cramer 《Research quarterly for exercise and sport》2019,90(2):227-233
Purpose: The purpose of this study was to determine magnitudes of differences for anthropometric and athletic performance scores between high school and elite college-level American football players. Method: Participants included high school-age (n = 3,666) athletes who participated in American football combines, as well as elite college-level (n = 5,537) athletes who participated in the National Football League (NFL) scouting combine. Combine data included position; height; weight; 10-, 20-, and 40-yard dash; pro-agility (PA); L-cone drill (LC); vertical jump (VJ); and broad jump (BJ). Athletes were separated into their respective position group, defensive back (DB), wide receiver (WR), linebacker (LB), quarterback (QB), running back (RB), tight end (TE), defensive line (DL), and offensive line (OL) for analysis of performance differences. Percent differences for each dependent variable were calculated to quantify magnitudes of differences. Results: NFL combine participants scored 3% to 25% better on all measurements, with the largest differences between weight and VJ (14%–25%). Conclusion: The largest measurement-specific differences between high school-age and elite college-level American football players were body size and power. Although it may seem intuitive that elite college-level players would perform better, these data provide a unique perspective to high school players, parents, and coaches, giving new information to use when designing measurement-specific athletic development programs. Thus, strength and conditioning professionals may benefit from emphasizing increases in muscle mass and power output in strength and conditioning programs. 相似文献
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Matthew S. Thiese Zachary C. Arnold Skyler D. Walker 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):5-11
Statistics are the primary tools for assessing relationships and evaluating study questions. Unfortunately, these tools are often misused, either inadvertently because of ignorance or lack of planning, or conspicuously to achieve a specified result. Data abuses include the incorrect application of statistical tests, lack of transparency and disclosure about decisions that are made, incomplete or incorrect multivariate model building, or exclusion of outliers. Individually, each of these actions may completely invalidate a study, and often studies are victim to more than one offense. Increasingly there are tools and guidance for researchers to look to, including the development of an analysis plan and a series of study specific checklists, in order to prevent or mitigate these offenses.Key words: a priori, analytical plan, statistical methods, disclosure, transparency, biostatistics 相似文献
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Zachary Batz Brian J. Olsen Jonathan Dumont Farahad Dastoor Michelle K. Smith 《CBE life sciences education》2015,14(2)
The high attrition rate among science, technology, engineering, and mathematics (STEM) majors has long been an area of concern for institutions and educational researchers. The transition from introductory to advanced courses has been identified as a particularly “leaky” point along the STEM pipeline, and students who struggle early in an introductory STEM course are predominantly at risk. Peer-tutoring programs offered to all students in a course have been widely found to help STEM students during this critical transition, but hiring a sufficient number of tutors may not be an option for some institutions. As an alternative, this study examines the viability of an optional peer-tutoring program offered to students who are struggling in a large-enrollment, introductory biology course. Struggling students who regularly attended peer tutoring increased exam performance, expert-like perceptions of biology, and course persistence relative to their struggling peers who were not attending the peer-tutoring sessions. The results of this study provide information to instructors who want to design targeted academic assistance for students who are struggling in introductory courses. 相似文献
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An increase in the period over which a muscle generates force can lead to the generation of greater force and, therefore, for example in jumping, to greater jump height. The aim of this study was to examine the effect of squat depth on maximum vertical jump performance. We hypothesized that jump height would increase with increasing depth of squat due to the greater time available for the generation of muscular force. Ten participants performed jumps from preferred and deep squat positions. A computer model simulated jumps from the different starting postures. The participants showed no difference in jump height in jumps from deep and preferred positions. Simulated jumps produced similar kinematics to the participants' jumps. The optimal squat depth for the simulated jumps was the lowest position the model was able to jump from. Because jumping from a deep squat is rarely practised, it is unlikely that these jumps were optimally coordinated by the participants. Differences in experimental vertical ground reaction force patterns also suggest that jumps from a deep squat are not optimally coordinated. These results suggest there is the potential for athletes to increase jump performance by exploiting a greater range of motion. 相似文献
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Prevalence of mindfulness literature and intervention in school psychology journals from 2006 to 2016 
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下载免费PDF全文 Stacy L. Bender Rachel Roth Alicia Zielenski Zachary Longo Ashley Chermak 《Psychology in the schools》2018,55(6):680-692
Mindfulness has been gaining momentum in the field of school psychology, however compared to other applied psychology fields, less research on mindfulness interventions has been conducted. This study systematically reviewed mindfulness literature and empirical studies in nine school psychology journals from 2006–2016. The prevalence of mindfulness articles and research specifically focused on mindfulness intervention were examined. Additionally, the type of intervention implemented, tier of intervention, and targets of intervention were examined. Results indicated that .57% of articles during the ten‐year time frame were related to mindfulness (n = 17). Eight of the 17 articles investigated mindfulness interventions, with interventions ranging from informal practices (e.g., Mandala coloring) to specific intervention programs (e.g., Compassion and Attention in the Schools). Majority of interventions were implemented at the universal level for students. Future directions for mindfulness research and the importance of mindfulness in school psychology are discussed. 相似文献
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Gregory A. Cranmer Nicholas D. Bowman Zachary W. Goldman 《Communication Research Reports》2017,34(1):78-83
Extant research has established that racially based brawn and brain frames are common within sports media. Framing theory suggests that these brawn and brain frames should influence audience members’ behaviors and attitudes, but little empirical evidence to support this notion exists. This study used a quasi-experimental design (Frame x Athlete Race) to understand how exposure to sports news articles that emphasize the physical or mental attributes of White and Black athletes may result in audiences’ subsequent observable behaviors or character judgments toward athletes. Results indicated that frames influenced audiences’ behaviors in a simulated environment and attitudes regarding athletes’ mental abilities, whereas athlete race influenced audiences’ attitudes of athletes’ physical abilities. These findings support sports scholars’ assertions about framing effects and underscore the potential dangers of current sports media trends. 相似文献
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The purpose of this study was to identify the various ways that instructors communicatively fulfill college students’ basic psychological needs (i.e. autonomy, competence, relatedness) in the classroom. Participants were 119 undergraduate students who completed open-ended, self-report questionnaires. Analyses of the coded data revealed that a variety of instructor communication behaviors and practices previously identified in the effective teaching literature fulfill students’ needs for autonomy, competence, and relatedness. According to Deci and Ryan’s (1985) self-determination theory, the fulfillment of these needs intrinsically motivates students to learn, develops their cognitive capacities, and equips them for short-term and long-term success. 相似文献
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Catherine D. Bruce Brent Davis Nathalie Sinclair Lynn McGarvey David Hallowell Michelle Drefs Krista Francis Zachary Hawes Joan Moss Joanne Mulligan Yukari Okamoto Walter Whiteley Geoff Woolcott 《Educational Studies in Mathematics》2017,95(2):143-161
This paper finds its origins in a multidisciplinary research group’s efforts to assemble a review of research in order to better appreciate how “spatial reasoning” is understood and investigated across academic disciplines. We first collaborated to create a historical map of the development of spatial reasoning across key disciplines over the last century. The map informed the structure of our citation search and oriented an examination of connection across disciplines. Next, we undertook a network analysis that was based on highly cited articles in a broad range of domains. Several connection gaps—that is, apparent blockages, one-way flows, and other limitations on communications among disciplines—were identified in our network analysis, and it was apparent that these connection gaps may be frustrating efforts to understand the conceptual complexity and the educational significance of spatial reasoning. While these gaps occur between the academic disciplines that we evaluated, we selected a few examples for closer analysis. To illustrate how this lack of flow can limit development of the field of mathematics education, we selected cases where it is evident that researchers in mathematics education are not incorporating the important work of mathematicians, psychologists, and neuroscientists—and vice versa. Ultimately, we argue, a more pronounced emphasis on transdisciplinary (versus multidisciplinary or interdisciplinary) research might be timely, and perhaps even necessary, in the evolution of educational research. 相似文献
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Christopher D. Slaten Roberto C. Rivera Daniel Shemwell Zachary M. Elison 《Journal of Education for Students Placed at Risk》2016,21(2):129-142
A growing body of research suggests educators need to focus on cultivating social and emotional competencies that youth will need to thrive in the new knowledge economy (Durlak, Weissberg, Dymnicki, Taylor, &; Schellinger, 2011). For marginalized urban youth, in particular, few have derived programs and interventions to assist with these competencies. This study illuminates the perspectives of 9 African American youth at risk for academic failure taking part in the Fulfill the Dream (FTD) program. FTD is a social and emotional learning curriculum emphasizing social justice and critical consciousness through the utilization of hip-hop culture. Information regarding the nature of the collaboration of this research project and recommendations for education professionals working with marginalized youth are discussed. 相似文献