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      Estimativa do consumo máximo de oxigênio e análise de concordância entre medida direta e predita por diferentes testes de campo Translated title: Estimated maximum oxygen uptake and agreement analysis between direct and predicted measurement by different field tests Translated title: Estimativa del consumo máximo de oxígeno y análisis de concordancia entre medida directa y prevista, según diversas pruebas de campo

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          Abstract

          OBJETIVO: Verificar a estimativa da potência aeróbia e a concordância entre a medida direta e predita por três diferentes testes de campo em jovens universitários. MÉTODOS: Participaram do estudo 12 sujeitos (23,1 ± 2,8 anos), sete homens e cinco mulheres, que foram submetidos a medidas antropométricas de massa corporal, estatura e espessura de dobras cutâneas. Além disso, os sujeitos realizaram um teste máximo direto (MD) em esteira e três testes de campo para verificação do consumo máximo de oxigênio (VO2máx), em valores relativos. Os testes de campo utilizados foram: corrida/caminhada de 12 minutos de Cooper (COOPER), corrida/caminhada de uma milha (MILHA) e shuttle run de 20 metros (SR-20m). Os dados foram analisados por procedimentos descritivos e para as comparações entre a medida direta e cada um dos testes de campo foi utilizado o teste t pareado. A regressão linear simples forneceu informações quanto ao desempenho dos testes e suas respectivas equações, enquanto que a concordância entre os métodos foi feita pela análise de Bland-Altman, com determinação da tendência de medida. RESULTADOS: Não foram encontradas diferenças significantes entre o MD e os três testes de campo. Os erros padrão de estimativa variaram de aproximadamente 5,8 a 6,0 ml.kg-1.min-1, e as correlações de r = 0,61 - 0,64. Os limites de concordância foram considerados amplos para os três testes, porém sem viés e tendência de estimativa. CONCLUSÃO: Apesar da similaridade entre os valores médios obtidos nas comparações entre os testes de campo e a medida de referência, o teste da MILHA foi o que apresentou melhores resultados de desempenho e concordância para a estimativa do VO2máx.

          Translated abstract

          OBJECTIVE: To verify the estimate of aerobic power and agreement between direct and predicted measurement by three different field tests. METHODS: The study included 12 subjects (23.1±2.8 years), seven men and five women, who underwent anthropometric measurements of body mass, height and thickness of skin folds. Moreover, the subjects performed a maximal direct test (DT) in a treadmill and three field tests for verification of maximal oxygen uptake (VO2max), in relative values. The field tests performed were: run/walk, 12 minutes by Cooper (COOPER), run/walk a mile (MILE), and 20 meter shuttle run (SR-20M). Data were analyzed by descriptive procedures and for comparisons between the direct measurement and each of the field tests, the paired t test was used. Simple linear regression provided information about the performance of tests and their equations, while the agreement between the methods was made by Bland-Altman analysis, with determination of the t measurement trend. RESULTS: No significant differences were found between the MD and the three field tests. The standard errors of estimation ranged from about 5.8 to 6.0 ml.kg-1.min-1and the correlation of r = 0.61 - 0.64. The limits of agreement were considered large for the three tests, but without bias and an estimation trend. CONCLUSIONS: Despite the similarity between the mean values obtained in comparisons between the field tests and the measurement of reference, the MILE test showed the best performance and agreement to estimate the VO2max.

          Translated abstract

          OBJETIVO: Verificar la estimativa de la potencia aeróbica y la concordancia entre la medida directa y la prevista, según tres diferentes pruebas de campo en jóvenes universitarios. MÉTODOS: Participaron en el estudio 12 individuos (23,1 ± 2,8 años), siete hombres y cinco mujeres, quienes fueron sometidos a medidas antropométricas de masa corporal, estatura y espesura de dobleces cutáneos. Además de eso, las personas realizaron una prueba máxima directa (MD) en estera y tres pruebas de campo para verificación del consumo máximo de oxígeno (VO2máx), en valores relativos. Las pruebas de campo que se utilizaron fueron: carrera/caminata de 12 minutos de Cooper (COOPER), carrera/caminata de una milla (MILLA) [1,6 quilómetro] y shuttle run de 20 metros (SR-20m). Los datos fueron analizados mediante procedimientos descriptivos, y se utilizó la prueba t en pares para las comparaciones entre la medida directa y cada una de las pruebas de campo. La regresión linear simple suministró informaciones cuanto al desempeño en las pruebas y sus respectivas ecuaciones, mientras que la concordancia entre los métodos se hizo por el análisis de Bland-Altman, con determinación de la tendencia de medida. RESULTADOS: No se encontraron diferencias significativas entre el MD y las tres pruebas de campo. Los errores estándares de estimativas variaron desde, aproximadamente, 5,8 a 6,0 ml.kg-1.min-1, y las correlaciones de r = 0,61 - 0,64. Los límites de concordancia fueron considerados como siendo amplios para las tres pruebas, no obstante, sin bies ni tendencia de estimativa. CONCLUSIÓN: Aun considerando la similitud entre los valores promedios obtenidos en las comparaciones, entre las pruebas de campo y la medida de referencia, la prueba de la MILLA fue la que presentó mejores resultados de desempeño y concordancia para la estimativa del VO2máx.

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          A progressive shuttle run test to estimate maximal oxygen uptake.

          The purpose of the present study was to examine the validity of using a 20 m progressive shuttle run test to estimate maximal oxygen uptake. Running ability was described as the final level attained on the shuttle run test and as time on a 5 km run. Maximal oxygen uptake (VO2 max) was determined directly for seventy-four volunteers (36 men, 38 women) who also completed the shuttle run test. Maximal oxygen uptake values were 58.5 +/- 7.0 and 47.4 +/- 6.1 ml.kg-1.min-1 for the men and women respectively (mean +/- SD, P less than 0.01). The levels attained on the shuttle run test were 12.6 +/- 1.5 (men) and 9.6 +/- 1.8 (women; P less than 0.01). The correlation between VO2 max and shuttle level was 0.92. The correlation between VO2 max and the 5 km run was -0.94 and the correlation between both field tests was -0.96. The results of this study suggest that a progressive shuttle run test provides a valid estimate of VO2 max and indicates 5 km running potential in active men and women.
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            A Means of Assessing Maximal Oxygen Intake

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              A generalized equation for prediction of VO2peak from 1-mile run/walk performance.

              The purpose of this study was to develop and cross-validate a generalized equation for predicting VO2peak from 1-mile run/walk (MRW) time and demographic variables in youth and young adults. Data for 753 males and females 8-25 yr of age were divided into validation (N = 495) and cross-validation (N = 258) samples. The validation sample was used to develop a multiple regression equation for predicting treadmill VO2peak (ml.kg-1.min-1) from gender (0 = F, 1 = M), age (yr), body mass index (kg.m-2; BMI) and MRW time (min). The multiple correlation (R) and standard error of estimate (SEE) were: R = 0.71, SEE = 4.8 ml.kg-1.min-1. The accuracy of this equation was confirmed when applied to the cross-validation sample. The regression equation for the total sample was: VO2peak = -8.41 (MRW) + 0.34 (MRW)2 + 0.21 (Age x Gender) -0.84 (BMI) + 108.94, R = 0.72, SEE = 4.8 ml.kg-1.min-1. We conclude that the generalized equation provides valid estimates of VO2peak in youth and young adults. The equation should be useful for educators, clinicians, and researchers who would like to interpret results of the MRW test in terms of VO2peak.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbme
                Revista Brasileira de Medicina do Esporte
                Rev Bras Med Esporte
                Sociedade Brasileira de Medicina do Exercício e do Esporte (São Paulo )
                1806-9940
                December 2013
                : 19
                : 6
                : 404-409
                Affiliations
                [1 ] Universidade Estadual de Londrina Brazil
                [2 ] Universidade Estadual de Londrina Brazil
                [3 ] Universidade Estadual de Londrina Brazil
                [4 ] Universidade de Coimbra Portugal
                [5 ] Universidade Estadual de Campinas Brazil
                Article
                S1517-86922013000600005
                10.1590/S1517-86922013000600005
                9368d374-3eb9-492c-897d-07b2d97da70b

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1517-8692&lng=en
                Categories
                PHYSIOLOGY
                SPORT SCIENCES

                Sports medicine,Anatomy & Physiology
                physical fitness,oxygen consumption,exercise test,aptitud física,consumo de oxígeno,prueba de esfuerzo,aptidão física,consumo de oxigênio,teste de esforço

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