{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T00:57:51Z","timestamp":1648774671131},"reference-count":54,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. bras. educ. f\u00eds. esporte"],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:p>O presente estudo analisou as vari\u00e1veis de produto no servi\u00e7o de t\u00eanis em 12 jogadores experientes, quando constrangidos com um escoamento aerodin\u00e2mico induzido (EAI) produzido por um ventilador industrial. Para o c\u00e1lculo da exatid\u00e3o do servi\u00e7o, recorreu-se a uma an\u00e1lise 2D. A velocidade de sa\u00edda da bola foi medida atrav\u00e9s de um radar. Os jogadores realizaram 100 servi\u00e7os \u00e0 m\u00e1xima velocidade e para o ponto de interse\u00e7\u00e3o da linha central e linha de servi\u00e7o. Os resultados n\u00e3o evidenciam diferen\u00e7as estatisticamente significativas na exatid\u00e3o e precis\u00e3o entre a condi\u00e7\u00e3o de controlo e as quatro condi\u00e7\u00f5es com EAI. Na vari\u00e1vel velocidade de servi\u00e7o verificaram-se diferen\u00e7as significativas em seis participantes. Na rela\u00e7\u00e3o entre a velocidade e a exatid\u00e3o constatou-se a exist\u00eancia de correla\u00e7\u00f5es negativas e estatisticamente significativas, nas condi\u00e7\u00f5es EAI1; EAI3 e EAI aleat\u00f3rio. Os jogadores apresentaram uma menor exatid\u00e3o e precis\u00e3o em profundidade e maior na dire\u00e7\u00e3o do servi\u00e7o.<\/jats:p>","DOI":"10.1590\/s1807-55092012000200003","type":"journal-article","created":{"date-parts":[[2017,2,4]],"date-time":"2017-02-04T23:17:14Z","timestamp":1486250234000},"page":"193-208","source":"Crossref","is-referenced-by-count":0,"title":["An\u00e1lise do rendimento no primeiro servi\u00e7o em tenistas de competi\u00e7\u00e3o sob o efeito de um escoamento aerodin\u00e2mico induzido"],"prefix":"10.1590","volume":"26","author":[{"given":"Pedro Cabral","family":"Mendes","sequence":"first","affiliation":[{"name":"Universidade de Coimbra, Portugal; Escola Superior de Educa\u00e7\u00e3o de Coimbra, Portugal"}]},{"given":"Rui","family":"Mendes","sequence":"additional","affiliation":[{"name":"Escola Superior de Educa\u00e7\u00e3o de Coimbra, Portugal; Universidade T\u00e9cnica de Lisboa, Portugal"}]},{"given":"Fernando","family":"Martins","sequence":"additional","affiliation":[{"name":"Escola Superior de Educa\u00e7\u00e3o de Coimbra, Portugal; 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