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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2018 March;177(3):57-64

DOI: 10.23736/S0393-3660.17.03501-X

Copyright © 2017 EDIZIONI MINERVA MEDICA

lingua: Inglese

Equations to predict maximal oxygen consumption during cardiopulmonary exercise testing in healthy Thai adults

Tichanon PROMSRISUK 1, Wilaiwan KHRISANAPANT 1 , Orapin PASURIVONG 1, Watchara BOONSAWAT 2, Boonsong PATJANASOONTORN 2, Burabha PUSSADHAMMA 2

1 Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; 2 Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand


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BACKGROUND: Cardiopulmonary exercise testing (CPET) is used to evaluate responses of various body organs to sub-maximal and maximal exercise. Maximal oxygen consumption (VO2max) is the maximum capacity of a person to absorb, carry, and consume oxygen. Normal reference values for VO2max are important for interpretation and diagnosis in clinical practice. However, reference values for VO2max using CPET were determined using subjects from other countries, and have never been measured specifically in the Thai population.
METHODS: The objectives of the present study were to provide reference values and create prediction equations of VO2max during CPET in the healthy Thais, and to compare our prediction equations with those cited by previous studies. Two hundred healthy Thai subjects (100 males and 100 females) aged between 20-69 years old were recruited. All subjects underwent CPET using a treadmill and an incremental protocol until symptom limitation.
RESULTS: All subjects were within the normal ranges for anthropometry, clinical characteristics, and pulmonary function. Prediction equations of VO2max for the Thai population were obtained from multiple linear regression analysis and significant correlations were found with age, weight, height, and gender. We also showed that the prediction equations of VO2max derived from previous studies (mostly in Caucasian or Japanese populations) overestimated the actual values in our subjects.
CONCLUSIONS: The present study provides prediction equations of VO2max that are ideal for interpreting the results of CPET performed using a treadmill in the Thai population.


KEY WORDS: Exercise test - Oxygen consumption - Reference values

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