Perceptions and benefits of static and dynamic stretching in dancers: qualitative and quantitative aspects / Percepções e benefícios do alongamento estático e dinâmico em dançarinos: aspectos qualitativos e quantitativos

ABSTRACT The present study investigated the beneficial effects induced on dancers by the two types of stretching protocol: static and dynamic stretching, in order to elevate the aesthetics of the figures and body positions to the highest level. The subjects were 20 young female dancers divided into two groups: Group DS (n=10), which performed dynamic stretching, and Group SS (n=10), a static stretching, both for six months. A survey, with the aim of assessing perceptions about the benefits induced by the type of stretching performed, and a Sit and Reach Test were administered to the dancers to assess both qualitative and quantitative aspects of flexibility. An independent samples t-test was performed to assess the differences in flexibility between DS and SS group before and after six months, and a Fisher's exact test to analyse their perceptions on the benefits induced by two training protocols. Result was statistically significant after six months and four associations were found (P <0.05). Dynamic stretching brought greater benefits both qualitatively and quantitatively. From the results of the study, it was possible to state that dancers in terms of induced benefits and satisfaction with the performance result achieved, preferred dynamic stretching.

RESUMO O presente estudo investigou os efeitos benéficos induzidos em dançarinos pelos dois tipos de protocolo de alongamento:: alongamento estático e dinâmico, a fim de elevar a estética das figuras e posições corporais ao mais alto nível. Os sujeitos foram 20 jovens bailarinas divididas em dois grupos: Grupo DS (n = 10), que realizou alongamento dinâmico, e Grupo SS (n = 10), alongamento estático, ambos por seis meses. Uma pesquisa, com o objetivo de avaliar as percepções sobre os benefícios induzidos pelo tipo de alongamento realizado, e um Teste Sentar e Alcançar, foram administrados às bailarinas para avaliar aspectos qualitativos e quantitativos da flexibilidade. Um teste t de amostras independentes foi realizado para avaliar as diferenças na flexibilidade entre os grupos DS e SS antes e depois de seis meses, e um teste exato de Fisher para analisar suas percepções sobre os benefícios induzidos por dois protocolos de treinamento. O resultado foi estatisticamente significativo após seis meses e quatro associações foram encontradas (P <0,05). O alongamento dinâmico trouxe maiores University of Salerno (UNISA), Fisciano-SA, Italy benefícios tanto qualitativa quanto quantitativamente. A partir dos resultados do estudo, foi possível afirmar que os bailarinos em termos de benefícios induzidos e satisfação com o resultado de desempenho alcançado, preferem o alongamento dinâmico.

Primary Percutaneous Coronary Intervention in a Patient with Acute Inferior Myocardial Infarction and Agenesis of Right Coronary Artery. "In Search of a Coronary Ostium".

Coronary arteries with anomalous origin from the aorta may represent a trouble for interventional cardiologist, in particular in setting of acute coronary syndromes. Research of coronary ostium may cause crucial delay in reperfusion with important consequences for myocardial salvage. We described a case of inferior ST-elevation myocardial infarction (STEMI) complicated by bradyarrythmia and hypotension, and treated with primary percutaneous coronary intervention (PCI) in a patient with agenesis of right coronary ostium. The patient had only a single left coronary artery occluded at the distal portion before a bifurcation with a huge branch that encompassed the theoretical territories of right coronary artery.