Uso de la cinética del consumo de oxígeno para la evaluación de la capacidad cardiorrespiratoria en pacientes con obesidad

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dc.contributor.authorMiranda, C.
dc.contributor.authorIbacache, P.
dc.contributor.authorOpazo, E.
dc.contributor.authorRojas, J.
dc.contributor.authorCano, M.
dc.date.accessioned2019-05-28T15:05:59Z
dc.date.available2019-05-28T15:05:59Z
dc.date.issued2018-01
dc.descriptionIndexación: Scopus.es_ES
dc.description.abstractBackground: The evaluation of cardiorespiratory fitness (RCC) using maximal or peak oxygen consumption (VO2), requires a high level of effort in obese patients. We propose a method to evaluate RCC using constant and moderate loads, called VO2 kinetics (tau). Aim: To determine the relationship between tau and peak VO2 in patients with obesity. Material and Methods: Forty patients (87% females) aged 37 ± 12 years and with a body mass index (BMI) of 34.6 ± 4.0 kg/m2, were divided into two groups according to the applied workload (0.5 and 0.8 Watts/kg body mass) using a cycle ergometer and Cortex Metalyzer 3b equipment. The protocol was started with 6 minutes at constant load and then increments of 20-25 Watts every two min were made until determination of the peak VO2. Results: The tau value was 51.8 ± 17.6 s, the absolute peak VO2 was 2.0 ± 0.7 L/min and the relative peak VO2 was 26.6 ± 30.0 ml/kg/min. There was a significant difference of tau medians between the group that used 0.5 and 0.8 Watts/kg (p = 0.002) and a significant inverse correlation between the absolute peak VO2 and the tau value for a load of 0.5 Watts/kg (rho = -0.415, p = 0.0327). Conclusions: The higher tau value, the lower the peak VO2 of an obese patient. It is suggested to apply loads of 0.5 Watts/kg for a VO2 kinetics test in obese patients or in subjects who do not wish to carry out higher physiological demands with a non-invasive and low risk procedure.es_ES
dc.description.urihttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0034-98872018000100015&lng=en&nrm=iso&tlng=en
dc.identifier.citationRevista Medica de Chile, 146(1), pp. 15-21.es_ES
dc.identifier.issn0034-9887
dc.identifier.otherhttp://dx.doi.org/10.4067/s0034-98872018000100015
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/8917
dc.language.isoeses_ES
dc.publisherSociedad Medica de Santiagoes_ES
dc.subjectExercise testes_ES
dc.subjectObesityes_ES
dc.subjectOxygen consumptiones_ES
dc.titleUso de la cinética del consumo de oxígeno para la evaluación de la capacidad cardiorrespiratoria en pacientes con obesidades_ES
dc.title.alternativeOxygen uptake kinetics to assess cardiorespiratory fitness in obese patientses_ES
dc.typeArtículoes_ES
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