1,720,954 research outputs found
Acute hemodynamic changes associated with dance exercises in females of Lusaka, Zambia
Get PDFThesisThe research was titled; Acute Hemodynamic Changes Associated with Dance Exercises
in Females of Lusaka, Zambia. Dynamic exercises are known to elicit hemodynamic
changes in the cardiovascular system. Zumba and ZOCA are part of a fast growing
group of dance fitness programmes designed to provide a cardiovascular dynamic
workout by moving the large muscle groups rhythmically, repetitively and continuously
following choreography in synchrony to music. However, despite their growing
popularity, very few studies have been done to provide knowledge regarding the
hemodynamic changes associated with these dance exercises. The study was a case
study in which 27 female participants took part in 60 minutes of either a Zumba or
ZOCA class. Using digital blood pressure monitors, recordings of blood pressure and
heart rate were taken at three different points. The first readings were taken before
commencement of the exercise (baseline measures), the second measurements were
taken 30 minutes after exercise (peak exercise time) and at the end of the class (after the
cool down choreography which is performed slowly in order to gradually restore the
body back to its resting state before exercise). The results obtained were as follows;
Mean baseline blood pressures were 118 and 77 7 mmHg, systolic and
diastolic blood pressure, respectively. After 30 minutes of dancing, mean systolic blood
pressure increased to 130 mmHg (p˂ 0.05) while diastolic blood pressure only rose
to an average of 80 mmHg (p˃ 0.05). At the end of the class (after the cool down
phase) mean systolic blood pressure reduced to 109 mmHg (p˂0.05) while
diastolic blood pressure reduced to 74 mmHg (p˂ 0.05). Heart rate increased from
a baseline value of 83 16 beats/min to 124 beats/min after 30 minutes of dance
exercise (p˂ 0.05) and reduced to 110 17 beats/min at the end of the class (p˂ 0.05).
From the heart rate at 30 minutes, the average percentage of maximum heart rate (%
HRmax) was calculated to be 65 %. The researchers concluded that Zumba and
ZOCA elicited significant hemodynamic changes that can be attributed to these
exercises stimulating the cardiovascular regulatory mechanisms sufficiently and hence
resulting in autonomic adjustments that were concurrent with dynamic exercise
Acute Hemodynamic Changes Associated with Zumba and ZOCA Dance Exercises among Females of Selected Gyms in Lusaka, Zambia
Get PDFBackground: Dynamic exercises are known to elicit hemodynamic changes such as an increase in arterial blood pressure and heart rate. Zumba and ZOCA are part of a fast growing group of dance fitness programmes designed to provide a cardiovascular dynamic workout. Despite their growing popularity, very few studies have been done to provide knowledge regarding the hemodynamic changes associated with these exercises.
Methods: Case study in which 27 females took part in either a Zumba or ZOCA class. Using digital blood pressure monitors, recordings of blood pressure and heart rate were taken, firstly, before commencement of the exercise, secondly, after 30 minutes after exercise and thirdly, at the end of the class. Results:Meanbaselinebloodpressureswere118(SD=14)mmHg and77(SD=7)mmHg,systolicanddiastolic blood pressures, respectively. After 30 minutes of dancing, mean systolic blood pressure increased to 130 (SD = 19) mmHg (p˂ 0.05) while diastolic blood pressure only rose to an average of 80 (SD = 8) mmHg (p˃ 0.05). At the end of the class (after the cool down phase) mean systolic blood pressure reduced to 109 (SD = 13) mmHg (p˂0.05) while diastolic blood pressure reduced to 74 (SD = 12) mmHg (p˂ 0.05).
Conclusions: Zumba and ZOCA elicited significant hemodynamic changes that can be attributed to these exercises stimulating the cardiovascular regulatory mechanisms (e.g central command and exercise-pressor) sufficiently and hence resulting in autonomic adjustments that were concurrent with effective dynamic exercise
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
