Oxygen uptake efficiency slope as a useful measure of cardiorespiratory fitness in morbidly obese women

Autor: Eliane Ferreira da Silva, Amanda Felismino, Selma S. Bruno, Nicole Oliver, Renata Cristina Corte, Renata Carlos, Tatiana Onofre
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Pulmonology
Physiology
Pulmonary Function
lcsh:Medicine
030204 cardiovascular system & hematology
Pulmonary function testing
Body Mass Index
0302 clinical medicine
Medicine and Health Sciences
Medicine
Public and Occupational Health
Treadmill
lcsh:Science
education.field_of_study
Multidisciplinary
Anthropometry
Respiration
Middle Aged
Sports Science
Obesity
Morbid
Chemistry
Physiological Parameters
Cardiorespiratory Fitness
Physical Sciences
Cardiology
Female
Analysis of variance
Anatomy
Anaerobic exercise
Research Article
Chemical Elements
Adult
medicine.medical_specialty
Population
Body adiposity index
03 medical and health sciences
Oxygen Consumption
Internal medicine
Humans
Obesity
Sports and Exercise Medicine
education
Exercise
business.industry
Body Weight
lcsh:R
Biology and Life Sciences
Cardiorespiratory fitness
030229 sport sciences
Physical Activity
Morbid Obesity
Oxygen
Physical Fitness
lcsh:Q
business
Physiological Processes
Zdroj: PLoS ONE, Vol 12, Iss 4, p e0172894 (2017)
PLoS ONE
ISSN: 1932-6203
Popis: Cardiopulmonary assessment through oxygen uptake efficiency slope (OUES) data has shown encouraging results, revealing that we can obtain important clinical information about functional status. Until now, the use of OUES has not been established as a measure of cardiorespiratory capacity in an obese adult population, only in cardiac and pulmonary diseases or pediatric patients. The aim of this study was to characterize submaximal and maximal levels of OUES in a sample of morbidly obese women and analyze its relationship with traditional measures of cardiorespiratory fitness, anthropometry and pulmonary function. Thirty-three morbidly obese women (age 39.1 ± 9.2 years) performed Cardiopulmonary Exercise Testing (CPX) on a treadmill using the ramp protocol. In addition, anthropometric measurements and pulmonary function were also evaluated. Maximal and submaximal OUES were measured, being calculated from data obtained in the first 50% (OUES50%) and 75% (OUES75%) of total CPX duration. In one-way ANOVA analysis, OUES did not significantly differ between the three different exercise intensities, as observed through a Bland-Altman concordance of 58.9 mL/min/log(L/min) between OUES75% and OUES100%, and 0.49 mL/kg/min/log(l/min) between OUES/kg75% and OUES/kg100%. A strong positive correlation between the maximal (r = 0.79) and submaximal (r = 0.81) OUES/kg with oxygen consumption at peak exercise (VO2peak) and ventilatory anaerobic threshold (VO2VAT) was observed, and a moderate negative correlation with hip circumference (r = -0.46) and body adiposity index (r = -0.50) was also verified. There was no significant difference between maximal and submaximal OUES, showing strong correlations with each other and oxygen consumption (peak and VAT). These results indicate that OUES can be a useful parameter which could be used as a cardiopulmonary fitness index in subjects with severe limitations to perform CPX, as for morbidly obese women.
Databáze: OpenAIRE
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