Ergoespirometria. Teste de esforço cardiopulmonar, metodologia e interpretação

Validade da medida do consumo máximo de oxigênio predito pelo teste de Cooper de 12 minutos em adultos jovens sedentários

“…Já o tempo médio de 10 minutos atingido pelos sujeitos na ergoespirometria se situou na faixa considerada ideal para esse tipo de procedimento, podendo essa zona ser estendida entre 8 e 12 minutos 17,17,25,11 . As médias de distância percorrida no teste de 12 minutos e o tempo do teste na ergoespirometria do presente estudo são apresentadas na tabela 2.…”

Efeito do estradiol sobre as respostas cardiopulmonar e metabólica em mulheres normotensas após a menopausa submetidas à cicloergoespirometria

“…The anaerobic threshold may be detected by use of ventilatory variables, such as the loss of the linear relation between pulmonary ventilation (VE) and oxygen consumption (VO2), based on the oxygen ventilatory equivalent (VE/VO2) added to the tendency towards an elevation in the relation between the expired carbon dioxide volume per minute (VCO2) and oxygen consumption (VO2), called ratio of respiratory exchange (VCO2/VO2). The AT is expressed as a percentage of VO2 peak, ie, based on the observations above, VO2 is measured at a certain moment and the percentage in regard to peak is calculated 1,11,13 ; 5) VO2 in the anaerobic threshold (VO2 in AT), oxygen volume consumed at the moment of the anaerobic threshold, measured in milliliters per kilogram per minute; 6) load applied at the moment of the anaerobic threshold (load in AT), measured in Watts; 7) point of respiratory decompensation (PRD), reached between 65 and 90% of maximum VO2, expressed as a percentage of VO2 peak, calculated in the same way as reported for AT, a moment at which a loss in the linear relation between VE and VCO2 occurs, observed based on the carbon dioxide ventilatory equivalent (VE/ VCO2) 1,2,12 ; 8) duration of exercise (DE), in minutes; 9) maximum load reached during exercise (ML), in Watts; 10) maximum heart rate (HR), in beats per minute (bpm); 11) maximum systolic blood pressure (SBPmax); and 12) maximum diastolic blood pressure (DBPmax), measured in millimeters of mercury.…”

“…The cardiopulmonary test assesses the cardiopulmonary and metabolic capacity through the measurement of maximum oxygen consumption. It determines the metabolic phases during progressive exercise based on the relation between oxygen consumption, pulmonary ventilation, and carbon dioxide production 2 . Estrogen stimulates vasodilation, as already shown by Lieberman et al 3 .…”

Impacto do hipotireoidismo subclínico na resposta cárdio-pulmonar em esforço e na recuperação

“…Os critérios adotados para a sua caracterização foram: perda de linearidade da V E ; tendência de ascensão abrupta de R após alcançar o valor um; aumento sistemático da V E /V O2 , sem um aumento correspondente na V E /V CO2 (9)(10)(11). Identificado o momento no teste de esforço em que o LA ocorreu, este é expresso pelo valor de V O2 em que o paciente se encontra.…”