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      Reliability and accuracy of Cooper's test in male long distance runners Translated title: Fiabilidad y precisión del test de Cooper en corredores varones de larga distancia Translated title: Fiabilidade e precisão do teste de Cooper em corredores de longas distâncias do sexo masculino

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          Abstract

          Abstract Objective: Endurance capacity can be assessed by field test such as Cooper's test; however, reliability and accuracy are rarely reported in the literature. It was our aims to describe reliability and accuracy of Cooper's test in long distance runners. Method: Fifteen male long distance runners performed twice all-out Cooper's test in a 400 m track. Total distance covered, maximum heart rate (HR) and rate of perceived exertion were recorded. Bias correction factor (Bc) was used to describe accuracy and the main dimensions of reliability were calculated by an intraclass correlation coefficient (ICC), effect size (ES) and agreement analysis. Results: Accuracy for total distance and HR were relatively high (Cb = 0.994 and 0.956). Reliability for covered distance was as small as 1.7% (52.2 m) and ICC was 0.99; additionally, neither proportional nor systematical bias was detected in the agreement analysis. Conclusions: All together, our results may confirm a good accuracy and reliability of Cooper's test in amateur long distance runners. Also, improvements or impairment lower than 52.2 m must not be associated with exercise training or retraining, since they are below the values of intra-subject reliability.

          Translated abstract

          Resumen Objetivo: La capacidad de resistencia puede ser evaluada por una prueba de campo como el test de Cooper, sin embargo, la precisión y fiabilidad son raramente divulgados en la literatura. Es nuestro objetivo describir la fiabilidad y la exactitud del test de Cooper en corredores de larga distancia. Método: Quince varones fondistas realizaron pruebas de Cooper dos veces en una pista de 400 metros. La distancia recorrida, la frecuencia cardíaca máxima (FC) y la percepción de esfuerzo fueron registradas. El factor de corrección de sesgo fue utilizado para describir la exactitud y las dimensiones de la fiabilidad y se calcularon los coeficientes de correlación intraclase (CCI), el tamaño del efecto y un análisis de concordancia. Resultados: La precisión de distancia total recorrida y de la frecuencia cardiaca fueron relativamente altas (Cb = 0.994 y 0.956). La confiabilidad para el recorrido era tan pequeña como el 1.7% (52.2 metros) y el CCI de 0.99, además no se detectó ni sesgo proporcional ni sistemático mediante el análisis de concordancia. Conclusiones: Nuestros resultados pueden confirmar una buena exactitud y fiabilidad del test de Cooper en corredores de larga distancia aficionados. También, las variaciones inferiores a 52.2 metros no deben ser asociados con el ejercicio de entrenamiento o desentrenamiento, puesto que están por debajo de la fiabilidad intra-sujeto.

          Translated abstract

          Resumo Objetivo: A capacidade de resistência pode ser avaliada pelo teste de campo, tal como o teste de Cooper; no entanto, a fiabilidade e precisão são raramente relatados na literatura. O objetivo foi descrever a fiabilidade e precisão do teste de Cooper em corredores de longa distância. Método: Quinze corredores de longa distância do sexo masculino realizaram teste de Cooper 2 vezes, numa faixa de 400 metros. Distância total percorrida, frequência cardíaca máxima (FC) e taxa de esforço percebido foram registadas. Fator de correção do viés (BC) foi usado para descrever a precisão e as principais dimensões de fiabilidade foram calculados por meio do coeficiente de correlação de intraclasse (ICC), tamanho do efeito (ES) e análise de concordância. Resultados: A precisão da distância total e frequência cardíaca eram relativamente altas (Cb = 0.994 e 0.956). Fiabilidade para o curso era tão pequena quanto 1.7% (52.2 metros) e ICC de 0.99, além disso, uma vez que nem viés proporcional, nem sistemático foram detetados através da análise de jogo. Conclusões: Os nossos resultados podem confirmar uma boa precisão e fiabilidade do teste de Cooper em corredores de longa distância amadores. Além disso, melhorias ou prejuízo menor do que 52.2 metros não devem ser associados a treinamento físico ou destreinamento, uma vez que estão abaixo dos valores de fiabilidade intrassujeitos.

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          Psychophysical bases of perceived exertion

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            A Means of Assessing Maximal Oxygen Intake

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              Reliability of ratings of perceived effort regulation of exercise intensity.

              This study assessed the reliability of ratings of perceived exertion (RPE) for the prescription of exercise intensity during cycling. Ten healthy men (21 to 62 years) and six women (25 to 50 years) attended the laboratory four times, 5 to 7 days apart. On the first visit each subject's maximal oxygen uptake was measured and, subsequently, they cycled at constant work rates based on their perception of ratings 9, 13 and 17 of the Borg 6-20 scale by regulating the resistance of the ergometer without reference to the instrument display panel. Analysis of variance revealed no significant between-trial differences with regard to oxygen uptake (VO2) or heart rate for men or women. The relative exercise intensities corresponding to the 3 ratings of exertion did not differ between men and women. Between-trial correlations for VO2 were highest for visits two and three at RPE levels 9 and 13 (r = 0.83 and r = 0.94) and consistently high (r = 0.92 or greater) for the three trials at RPE17. These data suggest that RPE is a useful frame of reference for the regulation of high levels of exercise intensity in healthy men and women. Small amounts of practice with the scale improve its applicability at lower exercise levels.
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                Author and article information

                Journal
                ramd
                Revista Andaluza de Medicina del Deporte
                Rev Andal Med Deporte
                Centro Andaluz de Medicina del Deporte (Sevilla, Sevilla, Spain )
                1888-7546
                2172-5063
                2017
                : 10
                : 2
                : 60-63
                Affiliations
                [4] Orlando FL orgnameTranslational Research Institute for Metabolism and Diabetes orgdiv1Florida Hospital orgdiv2Sanford, Burnham, Prebys Medical Discovery Institute USA
                [1] Málaga Andalucía orgnameUniversidad de Málaga orgdiv1Andalucía Tech orgdiv2Facultad de Medicina Spain
                [3] Málaga Andalucía orgnameUniversidad de Málaga orgdiv1Andalucía Tech orgdiv2Laboratorio de Biodinámica y Composición Corporal, Facultad de Ciencias de la Educación Spain
                [2] Galicia orgnameUniversidade da Coruña orgdiv1Facultad de Ciencias de la Actividad Física y el Deporte Spain
                Article
                S1888-75462017000200060 S1888-7546(17)01000200060
                10.1016/j.ramd.2016.03.001
                d34de205-f5c1-44e5-9651-c514c38885b6

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 14 March 2016
                : 08 March 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 10, Pages: 4
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                SciELO Spain

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                Original Articles

                Erro técnico de medição,Análise de concordância,Coeficiente de correlação intraclasse,Effect size,Tamanho do efeito,Test de campo,Intraclass correlation coefficient,Fator de correção de viés,Amateur athletes,Agreement analysis,Field endurance test,Technical error of measurement,Bias correction factor,Atletas Amateur,Teste de campo resistência,Atletas amadores,Factor de corrección de sesgo,Tamaño del efecto,Coeficiente de correlación intraclase,Análisis de concordancia,Error técnico de medición

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