Cardiovascular responses to endurance training in children: effect of gender

Obert, Philippe; Mandigout, Stéphane; Nottin, Stéphane; Vinet, Agnès; Nguyen, Long-Dang; Lecoq, A.-M.

doi:10.1046/j.1365-2362.2003.01118.x

“…É importante destacar também que o VO 2 máx é uma medida utilizada para nortear a prescrição do exercício e a análise do efeito dos programas de treinamento 8,9 .…”

Section: Introductionunclassified

Maximum oxygen uptake in adolescents as measured by cardiopulmonary exercise testing: a classification proposal

Rodrigues

¹

,

Perez

²

,

Carletti

³

et al. 2006

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Objective: The identification of populational levels of maximum oxygen uptake (VO 2max ) is an aid to studies that propose to relate physical fitness to cardiovascular risk, and also for prescribing exercise and analyzing the effects of training. To date, there is no information with which this parameter can be classified in samples of adolescents from the Brazilian population. This study is, therefore, the first to propose the determination of mean VO 2max levels in a sample of the Brazilian population.Methods: A sample of 380 schoolchildren (177 boys and 203 girls, aged 10 to 14 years) was selected at random from public schools in Vitória, ES. After anthropometric assessment they underwent cardiopulmonary exercise testing, VO 2max was measured directly and results were classified according to quintiles calculated from the study sample.Results: The mean VO 2max values observed ranged from 42.95 to 49.55 mL.kg -1 .min -1 for boys and from 36.76 to 38.29 mL.kg -1 .min -1 for girls.Conclusions: This paper proposes mean VO 2max ranges as a classification parameter for cardiorespiratory fitness, in addition to contributing to a definition of normal values for the Brazilian population. This classification will also be of use for establishing cutoff points in future studies.J Pediatr (Rio J). 2006;82(6):426-30: Maximum oxygen uptake, adolescents, aerobic fitness, cardiopulmonary exercise testing. ResumoObjetivo: A identificação de valores populacionais do consumo máximo de oxigênio (VO 2 máx) auxilia nos estudos que se propõem a relacionar a aptidão física ao risco cardiovascular, bem como na prescrição do exercício e na análise do efeito do treinamento. Em amostras de adolescentes da população brasileira, ainda não existem informações para classificação desse parâmetro. Portanto, a proposta inédita deste estudo foi de determinar os valores médios de VO 2 máx de uma amostra da população brasileira.Métodos: Foi selecionada aleatoriamente uma amostra de 380 escolares (177 meninos e 203 meninas) da rede pública de Vitória (ES), com idade de 10 a 14 anos. Após avaliação antropométrica, foram submetidos a teste cardiopulmonar para medida direta do VO 2 máx, cujos valores foram classificados de acordo com o quintil calculado a partir da amostra estudada.Resultados: Os valores médios de VO 2 máx encontrados para os meninos foram de 42,95 a 49,55 mL.kg -1 .min -1 e, nas meninas, entre 36,76 e 38,29 mL.kg -1 .min -1 .Conclusões: O presente trabalho propõe faixas de valores médios de VO 2 máx como parâmetro para classificação de aptidão cardiorrespiratória, além de contribuir para a definição dos valores de normalidade da população brasileira. Essa classificação auxilia também no estabelecimento de pontos de corte para estudos posteriores. O sedentarismo é um problema crescente que tem atingido um número cada vez maior de crianças e adolescentes. Autores relatam que há uma tendência entre os adolescentes de se envolverem menos nas atividades de educação física escolar e em atividades vigorosas e de aumentarem o tempo d...

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“…It is also important to point out that VO 2max measurements are also used for prescribing exercise and analyzing the effects of training programs. 8,9 Aerobic capacity as measured by VO 2max depends on cardiovascular, respiratory, and hematological components in addition to oxidative mechanisms of muscles being exercised. It is determined by means of the cardiopulmonary exercise testing, which allows for the simultaneous evaluation of the capacities of the cardiovascular and respiratory systems to perform their principal functions, such as gaseous exchange.…”

Section: Introductionmentioning

confidence: 99%

Valores de consumo máximo de oxigênio determinados pelo teste cardiopulmonar em adolescentes: uma proposta de classificação

Rodrigues¹,

Perez²,

Carletti³

et al. 2006

J. Pediatr. (Rio J.)

View full text Add to dashboard Cite

Objective: The identification of populational levels of maximum oxygen uptake (VO 2max ) is an aid to studies that propose to relate physical fitness to cardiovascular risk, and also for prescribing exercise and analyzing the effects of training. To date, there is no information with which this parameter can be classified in samples of adolescents from the Brazilian population. This study is, therefore, the first to propose the determination of mean VO 2max levels in a sample of the Brazilian population.Methods: A sample of 380 schoolchildren (177 boys and 203 girls, aged 10 to 14 years) was selected at random from public schools in Vitória, ES. After anthropometric assessment they underwent cardiopulmonary exercise testing, VO 2max was measured directly and results were classified according to quintiles calculated from the study sample.Results: The mean VO 2max values observed ranged from 42.95 to 49.55 mL.kg -1 .min -1 for boys and from 36.76 to 38.29 mL.kg -1 .min -1 for girls.Conclusions: This paper proposes mean VO 2max ranges as a classification parameter for cardiorespiratory fitness, in addition to contributing to a definition of normal values for the Brazilian population. This classification will also be of use for establishing cutoff points in future studies.J Pediatr (Rio J). 2006;82(6):426-30: Maximum oxygen uptake, adolescents, aerobic fitness, cardiopulmonary exercise testing.

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“…Obert et al (2003) report that children participating in maximal exercise have increased VO ² max . Furthermore, research has confirmed that VO ² peak levels are higher in children participating in daily physical activity and in those children with more lean body mass (Dencker et al, 2007;Dencker, 2006).…”

Section: Chapter 5 Discussion Implications and Conclusionmentioning

confidence: 99%

“…Children participating in maximal exercise have been found to have increased VO ² max (Obert et al, 2003). However, Brown et al (2006) reports that VO ² max levels plateau in girls at around age 14 and in boys at age 18.…”

Section: Aerobic Fitnessmentioning

confidence: 99%

Self-Efficacy, Physical Activity, and Aerobic Fitness in Middle School Children: Examination of a Pedometer Intervention Program

Manley¹

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Cardiovascular responses to endurance training in children: effect of gender

Abstract: Whatever gender, aerobic training increases VO2max in children, mediated by an improvement in SVmax only. Similar mechanisms, including loading conditions and cardiac morphology, seem to be involved in both genders in order to explain such an improvement.

Cited by 77 publications

References 45 publications

Maximum oxygen uptake in adolescents as measured by cardiopulmonary exercise testing: a classification proposal

Maximum oxygen uptake in adolescents as measured by cardiopulmonary exercise testing: a classification proposal

Valores de consumo máximo de oxigênio determinados pelo teste cardiopulmonar em adolescentes: uma proposta de classificação

Self-Efficacy, Physical Activity, and Aerobic Fitness in Middle School Children: Examination of a Pedometer Intervention Program

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