1,720,976 research outputs found
Hängt die erlebte Sportfreude vom Lehrerverhalten, vom Unterrichtsklima oder vom Inhalt der Sportstunde ab?
No full textDo executive functions predict physical activity behavior? A meta-analysis
Full text linkBACKGROUND: Executive functions (EFs) are important determinants of health behaviors. In the present study, a meta-analysis was conducted to investigate the relationship between EFs and physical activity (PA) behavior. METHODS: Systematic searches were carried out in PsycInfo, MEDLINE, and SPORTDiscus databases throughout April 2021. Prospective empirical studies conducted with general healthy populations across the lifespan, which reported the relationship between baseline EFs and later PA behavior were selected. RESULTS: Eight studies were found eligible. Results of the multilevel meta-analysis revealed a small but significant total effect size for EFs on PA behavior of z = 0.12. High heterogeneity was observed among studies. When potential moderators were tested, residual heterogeneity remained significant and the effects of the moderators were not significant. The effect size dropped when accounted for publication bias. CONCLUSIONS: Despite limitations, the study provided evidence for EFs’ determinant role on PA behavior. More research is however encouraged to inform PA promotion programs that are well-prepared for individual differences in EFs. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40359-023-01067-9
...und irgendwann macht Sport einfach Spass. Sportbezogene Motive und Erwartungen als Basis differenziell angelegter Sportprogramme
Full text link
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
Perceived stress and trait self-control interact with the intention-behavior-gap in physical activity behavior.
No full textRegular physical activity is an empirically well-documented health behavior. Despite the fact that many individuals intend to exercise, they often fail to implement this intention into behavior. Planning is an effective technique for translating physical activity intentions into actions. The present study aimed to examine relevant mediators and moderators in order to explain how and for whom intentions translate into action. In a longitudinal study, 108 participants (Mage = 31.17 years, 61 women) from different jobs completed measures for intention and trait self-control at baseline (T1), action planning and coping planning 4 weeks later (T2), and physical activity behavior and perceived stress another 4 weeks later (T3). A moderated mediation analysis indicated that perceived stress and trait self-control interact with physical activity intention to predict behavior. In particular, in individuals with low levels of perceived stress and medium–to-high trait self-control, intention and physical activity correlate positively. Unexpectedly, action planning facilitated behavior enactment only in individuals with low perceived stress and high trait self-control. In addition, when perceived stress and trait self-control were high, coping planning served as a significant mediator between intention and behavior. Our results highlight the moderating role of perceived stress and trait self-control in the context of intention and physical activity behavior. Under specific perceived stress levels, enactment of behavior based on intentions and planning is supported by high trait self-control. Examining potential mediators and moderators of the intention–behavior gap seems to be a fruitful approach to explain physical activity behavior
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
- …
