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Research in Sports Sciences is supported often by inferences based on thedeclaration of the value of the statistic statistically significant ornonsignificant on the bases of a P value derived from a null-hypothesis test.Taking into account that studies are manly conducted in sample, the use of nullhypothesis testing only allows estimating the true values (population) of thestatistics used. However, evidence has grown in many areas of knowledge thatthis approach often leads to confusion and misinterpretation. To overcome thislimitation they have recently emerged recommendations to support thestatistical analysis with approaches that make use of more intuitiveinterpretations and more practical, especially based on the magnitudes(certainty / uncertainty) of the true values found. With the intent to providealternative solutions to methodological designs recurrently used in research insports sciences, this paper will seek to i) briefly spell out some of theweaknesses associated with the null hypothesis tests based in the P value; ii)reflect on the implications of the use of practical/clinical significance asopposed to statistical significance; iii) submit proposals for use theinferences based on the magnitude, particularly in the visualization andinterpretation of results; iv) present and discuss the limitations ofmagnitude-based inference. Thus, this update article discourages, in asustained-based, the use of significance tests based only on the concept ofnull hypothesis. Alternatively, it is proposed to use methods of inferencebased on magnitudes as they allow interpretations of the practical/clinicaleffects results obtained.  As investiga\c{c}\~oes em ci\^encias do esportesustentam-se frequentemente em infer\^encias baseadas na declara\c{c}\~ao de umvalor estatisticamente significativo, ou n\~ao significativo, com base no valorde p que deriva dos testes de hip\'otese nula. Considerando que os estudoss\~ao iminentemente amostrais, o recurso aos testes de hip\'otese nula apenaspossibilita estimar os valores verdadeiros (popula\c{c}\~ao) das estat\'isticasutilizadas. Contudo, tem crescido a evid\^encia, em diversas \'areas doconhecimento, de que esta abordagem origina frequentemente interpreta\c{c}\~oesconfusas e at\'e erradas (7). Para ultrapassar esta limita\c{c}\~ao t\^emsurgido recentemente recomenda\c{c}\~oes no sentido de sustentar as an\'alisesestat\'isticas com abordagens que recorram a interpreta\c{c}\~oes maisintuitivas e mais pr\'aticas, baseadas sobretudo nas magnitudes(certezas/incertezas) dos valores verdadeiros encontrados. Com o intento defornecer pistas alternativas aos desenhos metodol\'ogicos recorrentementeutilizados na investiga\c{c}\~ao em ci\^encias do esporte, neste trabalhoprocuraremos i) enunciar sucintamente algumas das fragilidades associadas aostestes de hip\'otese nula sustentados no valor de p; ii) refletir sobre asimplica\c{c}\~oes da utiliza\c{c}\~ao da signific\^ancia pr\'atica/clinica emoposi\c{c}\~ao \`a signific\^ancia estat\'istica; iii) apresentar propostas deutiliza\c{c}\~ao das t\'ecnicas de infer\^encias baseadas na magnitude,particularmente na visualiza\c{c}\~ao e interpreta\c{c}\~ao dos resultados; iv)apresentar as principais limita\c{c}\~oes do uso das infer\^encias baseadas emmagnitudes. Assim, neste artigo de atualiza\c{c}\~ao desencoraja-se, de formasustentada e fundamentada, o uso dos testes de signific\^ancia baseados apenasno conceito de hip\'otese nula. Em alternativa, prop\~oe-se a utiliza\c{c}\~aode m\'etodos de infer\^encias baseados em magnitudes por possibilitareminterpreta\c{c}\~oes dos efeitos pr\'aticos/cl\'inicos dos resultados obtidos.

Infer\^encia Baseada em Magnitudes na investiga\c{c}\~ao em Ci\^encias  do Esporte. A necessidade de romper com os testes de hip\'otese nula e os  valores de p