{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,3]],"date-time":"2025-09-03T09:55:38Z","timestamp":1756893338021},"reference-count":49,"publisher":"FapUNIFESP (SciELO)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev Bras Med Esporte"],"published-print":{"date-parts":[[2013,2]]},"abstract":"<jats:p>OBJETIVO: Caracteriza\u00e7\u00e3o da t\u00e9cnica de bru\u00e7os, na rela\u00e7\u00e3o entre os par\u00e2metros cinem\u00e1ticos e neuromusculares. M\u00c9TODO: A eletromiografia de superf\u00edcie (EMG) foi utilizada para analisar a din\u00e2mica da atividade neuromuscular nos m\u00fasculos peitoral maior (PM), bic\u00edpite braquial (BB), tric\u00edpite braquial (TB) e deltoide anterior (DA) em 12 nadadores de elite nacional. Foi utilizado um par de c\u00e2maras, fornecendo uma proje\u00e7\u00e3o dupla a partir de uma c\u00e2mara subaqu\u00e1tica e outra acima da superf\u00edcie da \u00e1gua, para an\u00e1lise das vari\u00e1veis cinem\u00e1ticas: velocidade de nado (VN), frequ\u00eancia gestual (FG) e dist\u00e2ncia de ciclo (DC) em 200m bru\u00e7os. RESULTADOS: A VN diminui de 1,41 (0,07) para 1,16 (0,09)m.s-1 (P &lt; 0,05). A DC diminuiu de 2,32 (0,37) para 1,96 (0,24)m, enquanto a FG sofreu um decr\u00e9scimo de 37,52 (5,16) para 34,40 (3,58) ciclo\/min do primeiro percurso de 50m at\u00e9 ao terceiro percurso de 50 m, aumentando ligeiramente no \u00faltimo percurso para 35,82 (3,39) ciclo\/min. O lactato sangu\u00edneo aumentou de repouso para o pico de lactato sangu\u00edneo de 1,12 (0,22) para 12,00 (3,23) mmol.L-1. Os resultados de EMG indicaram um aumento da frequ\u00eancia em rela\u00e7\u00e3o \u00e0 amplitude para todos os m\u00fasculos em estudo, exceto para o DA. Correla\u00e7\u00f5es negativas foram obtidas entre a frequ\u00eancia e a VN, FG e DC, ou seja, para os m\u00fasculos BB, TB e PM, verificou-se uma correla\u00e7\u00e3o forte entre VN, FG e DC, isto \u00e9, \u00e0 medida que as vari\u00e1veis cinem\u00e1ticas aumentam a frequ\u00eancia diminui. As correla\u00e7\u00f5es sugerem que a ativa\u00e7\u00e3o neuromuscular apresenta rela\u00e7\u00e3o direta com as vari\u00e1veis cinem\u00e1ticas, nomeadamente para uma diminui\u00e7\u00e3o da frequ\u00eancia, nos m\u00fasculos BB, TB e PM e para uma elevada amplitude e forte correla\u00e7\u00e3o com as vari\u00e1veis cinem\u00e1ticas em PM. CONCLUS\u00c3O: A rela\u00e7\u00e3o entre as vari\u00e1veis cinem\u00e1ticas e EMG s\u00e3o determinantes na avalia\u00e7\u00e3o da performance em nata\u00e7\u00e3o pura desportiva, nomeadamente, no suporte na prescri\u00e7\u00e3o de exerc\u00edcios para o aumento da resist\u00eancia muscular dos m\u00fasculos envolvidos na t\u00e9cnica de bru\u00e7os.<\/jats:p>","DOI":"10.1590\/s1517-86922013000100012","type":"journal-article","created":{"date-parts":[[2013,4,20]],"date-time":"2013-04-20T10:37:23Z","timestamp":1366454243000},"page":"56-61","source":"Crossref","is-referenced-by-count":3,"title":["Observa\u00e7\u00e3o e caracteriza\u00e7\u00e3o t\u00e9cnica em nata\u00e7\u00e3o pura desportiva: 200 m bru\u00e7os"],"prefix":"10.1590","volume":"19","author":[{"given":"Ana","family":"Concei\u00e7\u00e3o","sequence":"first","affiliation":[{"name":"Escola Superior de Desporto de Rio Maior,  Portugal; Centro de Investiga\u00e7\u00e3o em Desporto, Sa\u00fade e Desenvolvimento Humano,  Portugal"}]},{"given":"Ant\u00f3nio","family":"Silva","sequence":"additional","affiliation":[{"name":"Universidade de Tr\u00e1s-os-Montes e Alto Douro,  Portugal; Centro de Investiga\u00e7\u00e3o em Desporto, Sa\u00fade e Desenvolvimento Humano,  Portugal"}]},{"given":"Tiago M.","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Desporto, Sa\u00fade e Desenvolvimento Humano,  Portugal; Nanyang Technological University,  Singapura"}]},{"given":"Hugo","family":"Louro","sequence":"additional","affiliation":[{"name":"Escola Superior de Desporto de Rio Maior,  Portugal; Centro de Investiga\u00e7\u00e3o em Desporto, Sa\u00fade e Desenvolvimento Humano,  Portugal"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1007\/s00421-004-1251-x","article-title":"Energy cost and intracyclic variation of the velocity of the centre of mass in butterfly stroke","volume":"93","author":"Barbosa 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