ESTIMATED MAXIMUM OXYGEN UPTAKE AND AGREEMENT ANALYSIS BETWEEN DIRECT AND PREDICTED MEASUREMENT BY DIFFERENT FIELD TESTS

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-1 and 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.19640440

VALIDITY OF EQUATIONS FOR ESTIMATING (V) over dotO(2)PEAK FROM THE 20-M SHUTTLE RUN TEST IN ADOLESCENTS AGED 11-13 YEARS

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Batista, MB, Cyrino, ES, Arruda, M, Dourado, AC, Coelho-E-Silva, MJ, Ohara, D, Romanzini, M, and Ronque, ERV. Validity of equations for estimating V.o(2)peak from the 20-m shuttle run test in adolescents aged 11-13 years. J Strength Cond Res 27(10): 2774-2781, 2013The aim of this study was to analyze the validity of 4 regression equations to estimate the peak oxygen consumption (V.o(2)peak) from the 20-m shuttle run test in adolescents aged 11-13 years. One hundred and fifteen adolescents, 61 boys (mean +/- SD: age = 12.3 +/- 0.9 years) and 54 girls (age = 12.1 +/- 0.7 years) performed the 20-m shuttle run test and an incremental progressive maximal test for direct V.o(2)peak analysis. Four linear regression equations were used to estimate the V.o(2)peak: Barnett et al. (equation 1), Leger et al. (equation 2), Mahar et al. (equation 3), and Matsuzaka et al. (equation 4). For boys, only the V.o(2)peak estimated by EQ3 did not differ from the value directly measured (p > 0.05). The EQ1, EQ2, and EQ4 underestimated the V.o(2)peak, whereas the EQ3 overestimated, particularly in girls (p < 0.05). Large limits of agreement were found between the reference method and the 4 equations, with higher estimated values by EQ2 for boys (8.36 +/- 15.24 mLkg(-1)min(-1)) and girls (2.45 +/- 12.63 mLkg(-1)min(-1)). The highest correlation values were observed by EQ4 for boys (r = 0.80), EQ1 for girls (r = 0.72), and EQ3 for total sample (r = 0.80). The equations analyzed were not precise for individual V.o(2)peak prediction; however, the EQ3 revealed better agreement, particularly for boys. Considering the data obtained in the boys and total sample, our results suggest that the EQ3 may provide the best predictive measure of V.o(2)peak from the 20-m shuttle run test in adolescents aged 11-13 years.271027742781Foundation for the Support of Scientific and Technological Development of Parana (FAADCT/Brazil)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Aptidão física relacionada à saúde em escolares de Jequié, BA, Brasil Health-related physical fitness in students from Jequié, BA, Brazil

O objetivo deste estudo foi analisar a aptidão física relacionada à saúde (AFRS) em escolares de Jequié, BA, Brasil. Para tanto, a AFRS de 182 meninos e 160 meninas (sete a 12 anos), escolares da rede pública de ensino, foi avaliada mediante a aplicação dos testes motores corrida/caminhada de nove minutos (indicador de resistência cardiorrespiratória), abdominal modificado em um minuto (indicador de força e resistência abdominal), sentar-e-alcançar (indicador de flexibilidade). O somatório das espessuras das dobras cutâneas tricipital e subescapular foi utilizado como indicador de gordura corporal. Os resultados encontrados indicaram maior prevalência de meninos e meninas abaixo (19% e 49%, respectivamente) do que acima (3% e 1%, respectivamente) dos critérios estabelecidos pela AAHPERD (1988) para indicadores de gordura corporal. Por outro lado, somente 51% dos meninos e 58% das meninas no sentar-e-alcançar; 11% e 7%, respectivamente, no abdominal modificado em um minuto, e 15% e 14%, respectivamente, na corrida/caminhada de nove minutos alcançaram os critérios estabelecidos. Portanto, os resultados sugerem que programas efetivos de intervenção parecem necessários para a promoção de mudanças no estado nutricional e na atividade física habitual de escolares de Jequié.<br>The aim of this study was to analyze the health-related physical fitness (HRPF) in students from Jequié, BA, Brazil. Therefore, the HRPF of 182 boys and 160 girls aged 7-12 years, students from public schools, was assessed by the application of 9-minute-run/walk (indicator of cardiorespiratory capacity), modified in one minute abdominal (indicator of abdominal strength and endurance), sit-and-reach (indicator of flexibility) motor tests. The sum of the triciptal and subscapular skinfolds thickness was used as indicator of body fat. The results found indicated higher prevalence of boys and girls below (19% and 49%, respectively) than above (3% and 1%, respectively) the criteria established by the AAHPERD (1988) for indicators of body fat. Conversely, only 51% of the boys and 58% of the girls in the sit-and-reach; 11% and 7%, respectively, in the modified in one minute abdominal; and 15% and 14%, respectively, in the 9-minute-run/walk reached the established criteria. Thus, the results suggest that effective intervention programs seem necessary for the promotion of alterations in the nutritional status as well as habitual physical activity of students from Jequié

Produção de frutos de morango em função de diferentes períodos de vernalização das mudas Production of strawberry fruits depending on vernalization periods of the transplants

Avaliou-se a produção de frutos de morango da cv. Camarosa em função de diferentes períodos de vernalização das mudas, comparando-a com a de mudas importadas. O experimento foi realizado em Pelotas, utilizando sistema de produção sob túnel. O transplante foi realizado em 18/05/06, utilizando-se mudas produzidas no sul do Rio Grande do Sul, vernalizadas por 0; 7; 14; 21 e 28 dias (4±1ºC, 94±2% UR), e mudas não vernalizadas do Chile. Os tratamentos foram dispostos em delineamento de blocos ao acaso, com quatro repetições. A unidade experimental foi constituída por 21 plantas, avaliadas quanto à produção, número de frutos por planta e massa média dos frutos ao longo de 20 semanas (agosto a dezembro de 2006). As mudas chilenas proporcionaram maiores produção e número de frutos do que as produzidas no RS na ausência de vernalização (1.038,3 e 491,7 g planta-1; 55,1 e 34,3 frutos planta-1, respectivamente). A vernalização das mudas nacionais por cerca de 24 dias otimizou a produção e o número de frutos (1.023,1 g planta-1; 55,6 frutos planta-1). As mudas produzidas no RS apresentaram maior produção em novembro e dezembro, enquanto as chilenas em outubro e novembro.<br>The yield of strawberry fruits cv. Camarosa was evaluated as affected by different vernalization periods of the transplant, in comparison with imported ones. The experiment was carried out in Pelotas, Rio Grande do Sul State, Brazil, using a tunnel as production system. The plants were transplanted on May18, 2006, using transplants produced in the south of Rio Grande do Sul, which were vernalized during 0; 7; 14; 21 and 28 days (4±1ºC, 94±2% RH), and transplants without vernalization coming from Chile. The treatments were disposed according to a randomized complete block design with four replications. The experimental unit were composed of 21 plants. The yield, number of fruits per plant and average fruit mass were analyzed during 20 weeks (August to December). The Chilean transplants provided greater production and number of fruits than transplants produced in Rio Grande do Sul (1,038.3 and 491.7 g plant-1; 55.1 and 34.3 fruits plant-1, respectively). The vernalization of the national transplants during approximately 24 days optimized the yield and number of fruits significantly (1,023.1 g plant-1; 55.6 fruits plant-1). Transplants produced in Rio Grande do Sul presented higher production in November and December, while Chilean ones in October and November