1,720,978 research outputs found
Effect of School Wellness Policies on School Physical Activity Behavior
No full textThe 2017 passing of the USDA Final Rule on School Wellness Policies requires schools to update their local school wellness policies. Purpose: To evaluate if the presence of policies to support PA and nutrition in schools was associated with students’ school-based PA and nutrition behaviors. Methods: Forty-two Iowa schools participated in the study. School wellness leaders completed an evaluation of their school wellness environment using the School Wellness Environment Profile. Classes of 4th – 8th grade students completed the Youth Activity Profile. Correlations were run to explore if there was an association between the number of policies in place to support student PA and nutrition and student-reported school-based behaviors. Results: Schools reporting having more policies in place to support student PA was predictive of students reporting higher levels of PA at school (r=0.50, p= 0.0009). Schools reporting having more policies in place to support student nutrition was not predictive of students reporting higher levels of nutrition behaviors. (r=-0.18, p=0.25). Conclusions: Our results show that differences exist in the types of wellness policies in place to support student behaviors in schools. In addition, we found that the presence of school PA policies was moderately associated with better student PA at school
Inter-instrument reliability of the Yamax digi-walker in elementary school children
No full textThis chapter looks at the Inter-instrument reliability of the Yamax digi-walker in elementary school childre
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
A Program Evaluation of a Flexible Non-Linear Periodization Model in a Collegiate Basketball Setting
Full text linkThe purpose of this project was to evaluate an in-season strength and conditioning program to maintain/increase muscular strength/power and increase motivation related to resistance training for female collegiate basketball athletes.
The athletes performed resistance training twice per week for 30-40 minutes per session over a 15-week period during their sport season. The in-season program was designed to maintain or gain muscular strength/power, promote recovery, and manage fatigue through sport specific movements using a flexible nonlinear periodization method (Haff & Tripplett, 2021). This is also known as daily undulating periodization, a method where volume and intensity fluctuate based on athlete readiness and fatigue levels (McNamara & Stearne, 2010). Athlete readiness was tracked using a questionnaire before each lifting session to determine the appropriate volume and intensity.
The training program was also informed by Self-Determination Theory (SDT), with the goal of driving changes in the motivation of athletes as it relates to resistance training. This theory states that humans must meet three psychological needs; competence, autonomy, and relatedness to foster optimal motivation (Deci & Ryan, 1985, 2000). The periodization method targeted athlete autonomy as they were able choose the volume/intensity based on their own personal physical readiness. The instruction they received related to movement skill and technique targeted their competence. Relatedness was targeted by performing the workout together and allowing athletes to choose who they worked with. Perceptions of self-efficacy and outcome expectancy were also examined at season’s end.
Following the 15-week in-season training program, athletes had significant increases in lower body power and upper body strength from pre-season. However, athletes did not show increases in lower body strength. There were no significant differences in motivation within the construct of autonomy, competence, self-efficacy, and outcome expectancy, but reported levels were consistently high. Player readiness varied greatly across the season as players reported anywhere from the maximum possible readiness (20) to the minimum possible readiness (4). Trends were identified between game minutes and physical readiness of players, including 9/10 players averaging over 10 minutes played or more per game dropping in readiness in early January after Christmas break and seven players seeing steady decreases in readiness during the months of December and February.
Ultimately, this program showed increases in upper body strength and lower body power, no changes in athlete motivations, and great variability in player readiness across the entire season
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