101,883 research outputs found
Cuore e nuove tecniche di palestra: la selezione dei pazienti e i carichi di lavoro
No full textObiettivo principale dello studio è stato quello di quantificare una
serie di variabili metaboliche, cardiovascolari ed ergometriche nel
corso di una seduta standard della durata di 50 min di spinning bike,
eseguita da istruttori di entrambi i sessi (6 maschi, 6 femmine).
Sono stati valutati vari parametri cardiometabolici ed emodinamici
ed i valori medi rilevati nei partecipanti per i parametri di potenza,
frequenza cardiaca e consumo di ossigeno sono stati di
120 ± 4 W, 136 ± 13 b/min e 32.8 ± 5.4 ml/kg/min per gli istruttori,
e 73 ± 43 W, 143 ± 25 b/min e 30 ± 9.9 ml/kg/min per le
istruttrici. L’analisi delle prestazioni individuali ha evidenziato come
il carico di lavoro nel corso della prova variasse tra moderato/
pesante a molto/estremamente pesante, essendo queste due
ultime condizioni decisamente prevalenti. I risultati ottenuti dimostrano
come questo tipo di attività di fitness abbia un impatto
molto elevato sulla funzione cardiovascolare e ne sconsigliano pertanto
la pratica a soggetti con storia di sedentarietà, specie se
avanti negli anni o decisamente anziani o con un elevato rischio
cardiovascolare.The main objective of this study was to evaluate a number of metabolic and cardiovascular variables during
a standard 50 min class performed by spinning bike instructors of both sexes: 6 males and 6 females. Mean
power output, heart rate, and oxygen uptake during the performance were 120 ± 4 W, 136 ± 13 bpm, and
32.8 ± 5.4 ml/kg/min respectively for males, and 73 ± 43 W, 143 ± 25 bpm, and 30 ± 9.9 ml/kg/min respectively
for females. The analysis of individual performances showed that these were compatible with a physical
exercise that ranged from moderate to heavy, to very heavy, the latter condition definitely prevailing. Results
show that this type of fitness activity has a high impact on cardiovascular function, and suggest that it
is unsuitable for unfit or sedentary individuals, especially if middle aged or elderly, who are willing to begin a
recreational physical activity program
[Systolic afterload-shortening relation: dependence of preload and influence of inotropism]. FT Relazione sistolica afterload-accorciamento: dipendenza dal preload ed influenza dell'inotropismo.
No full textBibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
The Right to Strike under the United States Constitution: Theory, Practice, and Possible Implications for Canada
No full textAnswering critics of the Canadian Supreme Court's judgment in B.C. Health, the author argues that the Court laid the foundation for a principled and durable doctrine protecting constitutional labour rights, one that goes directly to the heart of the matter — the inequality of workers’ power in the employment relation. In the author’s view, two paths could lead from B.C. Health to the recognition of Charter protec- tion for a right to strike: one that treats the right as an accessory to col- lective bargaining, and one that upholds the right directly on the basis of the Charter values of equality and participation. The author supports the latter approach, contending that constitutional rights should be defined in relation to fundamental values, in a way that is not contingent on time-bound or fact-sensitive assessments about the role of strikes within a particular collective bargaining regime. Although a Charter right to strike may involve the courts in difficult choices about when to defer to legislative policy decisions, and courts may lack the institutional capac- ity to deal effectively with labour law issues, the author points out that judges can look to ILO standards for expert guidance. Noting that the U.S. experience in this area might be of considerable use to Canadians, the author concludes by providing an overview of American case law concerning a constitutional right to strike.Peer reviewe
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