1,721,040 research outputs found
Acute effects of whole-body vibrations on the fatigue induced by multiple repeated sprint ability test in soccer players
No full textBackground: We tested the hypothesis that Whole Body Vibration (WBV) positively affects the fatigue process ensuing from repeated bouts of maximal efforts, as induced by repeated sprints ability (RSA). Eleven male soccer players performed three sets of six repeated shuttle sprints (40 metres). Methods: Eleven male soccer players (age 23,6±4,5 years) were cross-randomized to perform WBW before RSA and during the recovery between sets (WBV-with) or to warm-up and passive recovery between sets (WBV-without). The effects of WBV were quantified by sprint time (ST) and blood lactate concentration (LA), collected up to 15th min after completion of tests. Results: ST during RSA showed a better maintenance of performance in the WBV-with compared to WBV-without condition in all three sets, reaching a statistical significance between-groups during the 2nd and 3rd set (P< 0.05). No significant differences in ST over the sets were detected in WBVwith, whereas a significant decrease was observed in the WBV-without condition (P<0.001). LA recovered significantly faster from the 9th to 15th minute of recovery in WBV-with as compared to WBV-without (P<0.05). Conclusions: These findings would indicate that WBV performed during recovery between RSA sets is capable of delaying the onset of muscle fatigue resulting in a better maintenance of sprint performance
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
Prognostic role of baroreflex control of heart rate: Further insights from dynamic assessment of baroreceptor-cardiac reflex?
No full text[No abstract available
The role of non invasive central hemodynamics in patients with heart failure at cardiac rehabilitation
No full textBackground: Heart failure is a complex clinical syndrome in which the heart’s ability to pump blood around the body is reduced1. Central hemodynamics is an important factor to be considered for the individuals with heart failure. Disturbance of ventricular functions can worsen heart failure symptoms, impair independence, reduce quality of life and lead to increased health care utilization in patients with heart failure. Previous studies have identified exercise as a possible treatment for impaired ventricular function without other cardiac disease; however, there is limited evidence for the effect of this form of treatment in patients with heart failure.
Aim: The primary aim of this study was to examine the effect of a supervised, out patient based exercise training programme on noninvasive central hemodynamics in patients with heart failure. Secondary aims were to examine the reproducibility of the Non invasive Cardiac system and find the effect of exercise on functional capacity, echocardiographic measures and quality of life. Methods: The participants for the study was enrolled from IRCCS San Raffaelle Pisana, Rome, Italy. Patients diagnosed with heart failure in outpatients department for cardiac rehabilitation, who met eligibility criteria, were recruited. Participants were screened by a Cardiac Rehabilitation Specialist at each sessons to ensure exercise safety prior to study enrolment. Demographic data, medical history, medications, functional capacity (six minute walk test), echocardiography parameters (Tricuspid Annular Plane Systolic Excursion, Ejection Fraction), Sort Form-36 Quality of Life Questionnaire and Kansas City Cardiomyopathy Questionnaire were repeated at Baseline and after 8 weeks.
We enrolled 50 patients (42 men and 8 women, Mean age 64+9 Years) diagnosed with chronic heart failure.This was a prospective, single-center study. The intervention consisted of 1 hour of aerobic interval training about thrice a week. Program were designed and supervised by Cardiac Rehabilitation Physiotherapists. The primary outcome measure was a change in central hemodynamics measured by Non invasive cardiac system and secondary outcome measure was chages in echocardiographic parameters, six minute walk test and quality of life parameters.
Results: The study participants reported significantly greater clinical improvement in central hemodynamics of Stroke Volume (P = 0.005), Cardiac Output (P = 0.054), Stroke Index (P = 0.003), Cardiac Index (P= 0.035), Heart Rate (P= 0.011) Cardiac Power index (p = 0.004) and Granov Goor Index (P= 0.001).These participants also had significant improvements in six minute walk test (p = 0.000), Tricuspid Annular Plane Systolic Excursion (P=0.017), Ejection Fraction (P= 0.001) and Short Form-36 Quality of Life questionnaire (P= 0.001) and also significantly improvement in clinical course of disease byKansas City Cardiomyopathy Questionnaire (P= 0.001).
Conclusion: Eight weeks of supervised, outpatient based, aerobic interval training can improve the Non invasive central hemodynamics, echocardiographic parameters, functional capacity and Quality of life in patients with heart failure. According to our study results, the exercise training, part of cardiac rehabilitation is an important component of therapy in patients with Heart failure
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
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