1,720,955 research outputs found
The effect of repetition ranges on maximal strength and hypertrophy
Full text linkThis study investigated the effects of repetition ranges with modified intensity and volume on muscle mass and maximal strength. Fourteen healthy athletes from a sports club were randomly assigned to either a low repetitions or high repetitions group. The low repetitions (LR) group performed 3 sets of 3-5 reps at 90-95% one repetition maximum (1RM) and high repetitions (HR) group performed 5 sets of 10-12 repetitions at 60-70% 1RM in specific strength training exercises for eight weeks. Muscle strength and muscle thickness measures were taken at baseline, four weeks and after the eight weeks of training. Results show LR gained better maximal strength than the HR group after the eight weeks of training in both the flat bench press and the squat test (p=0.0201 and p=0.0165 respectively). As for muscle thickness, outcomes of the quadriceps cross section thickness were almost identical between the two groups. There was no significant difference in 4 or 8 weeks (p=0.8776 and p=0.9335 respectively). Our findings suggest performing low repetitions with high intensity (load) is more beneficial for gaining maximal strength and muscle mass in short training cycles. Further research is needed to substantiate these findings in a larger cohort
L’apport De La Préparation Physique Integrée A L\u27entrainement En Football Des Jeunes Footballeurs Algeriens U-17 (les Qualités Physiques Et Techniques Combinées)
Full text linkA travers cette étude on a essayé de connaître l’apport de la préparation physique intégrée en générale sur l’amélioration des paramètres physiques et techniques dans la discipline football, et en particulier, si ce concept était transposable chez les jeunes footballeurs U-17. Deux objectifs étaient visés, du point de vue scientifique mesurer l’apport de la P.P.I chez les jeunes joueurs, et du point de vue pratique, présenter un outil pédagogique aux entraineurs et étudiants dans la compréhension de ce concept d’entrainement. On a utilisé la méthode expérimentale, et l’élaboration d’un programme de 8 semaines, appliquer sur un échantillon composé de 20 joueurs U-17.l ’analyse les résultats des pré-tests et des post-tests a démontré ce qui suit. La marge de progression du groupe expérimental était nettement significative en comparaison avec le groupe témoin, et que l’impact de ce concept s’est avéré positif dans l’approche de la préparation physique des jeunes footballeurs U-17. Les hypothèses émises en amont, se sont confirmées à travers l’intervention pédagogique l’expérimentation, les résultats obtenus sont significatifs. Nous recommandons la nécessité, Initier les entraineurs des jeunes catégories au concept de la préparation physique intégrée, ainsi qu’une attention particulière à la préparation et la formation des entraineurs des catégories jeunes, le cas échéant, et de la nature spécifiques de ces catégories
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
The Effect Of Proprioceptive Training In Injury Prevention Of Young Footballers
Full text linkAgonist and antagonist muscle balance is an essential element of joint stability and motor functioning. Sport training is often accompanied by disturbances of this balance, causing musculo-tendon injuries. The objective of this study is to prove that the so-called "natural" leg of the footballer is less powerful than the leg leans. Our hypothesis supposes that with a musculation and muscular strengthening program based on proprioceptive exercises, we will be able to reduce this difference and arrive at a certain muscular balance between the two legs and thus limit or avoid the muscular injuries due to this imbalance. 23 U-21 players were chosen to lead this 8-week experience based on proprioceptive muscle-building exercises. A unipodal balance and overall postural proprioception test were applied. After the statistical processing, it was found that training based on proprioceptive muscle strengthening exercises allows players to have a better balance in both legs and therefore the reduction in risk of injury and optimal performance. And there was a positive and significant correlation between the two legs when you use the right methods and the right procedures and proprioceptive exercises
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
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