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Validity of the VO2 Master Pro device for maximal oxygen consumption prediction and the measurement of resting metabolism
Goldschmidt, Tobiáš ; Nohel, Michal (referee) ; Chlíbková, Daniela (advisor)
Measurements of maximal oxygen uptake and resting metabolic rate are one of the most important things in testing athletes and madical patients. For these measurements are used breath analyzers. These analyzers are usually non-portable costly devices. VO2 Master Pro is on the other hand portable breath analyzer with much lower prize. It is biggest disadvantage is that it contains only O2 sensor and not CO2 sensor as madically aproved devices. Aim of this study is to determinate validity and difference of measurements between VO2 Master Pro and reference device for measuring maximal oxygen uptake and resting metabolic rate. Difference for measuring maximal oxygen uptake was 4,15 ± 4,41 %. For measuring of resting metabolic rate difference was 41,20 ± 11,44 %. For measuring of maximal oxygen uptake is VO2 Master Pro valid but for measuring of resting metabolic rate it is not. It was also confirmed, that size of measured value have non-linear corelation with size of difference in measuring maximal oxygen uptake.
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Validity of the VO2 Master Pro device for maximal oxygen consumption prediction and the measurement of resting metabolism
Goldschmidt, Tobiáš ; Nohel, Michal (referee) ; Chlíbková, Daniela (advisor)
Measurements of maximal oxygen uptake and resting metabolic rate are one of the most important things in testing athletes and madical patients. For these measurements are used breath analyzers. These analyzers are usually non-portable costly devices. VO2 Master Pro is on the other hand portable breath analyzer with much lower prize. It is biggest disadvantage is that it contains only O2 sensor and not CO2 sensor as madically aproved devices. Aim of this study is to determinate validity and difference of measurements between VO2 Master Pro and reference device for measuring maximal oxygen uptake and resting metabolic rate. Difference for measuring maximal oxygen uptake was 4,15 ± 4,41 %. For measuring of resting metabolic rate difference was 41,20 ± 11,44 %. For measuring of maximal oxygen uptake is VO2 Master Pro valid but for measuring of resting metabolic rate it is not. It was also confirmed, that size of measured value have non-linear corelation with size of difference in measuring maximal oxygen uptake.
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Comparison of two analysers of respiratory gases by paired examination of the same persons
Moravcová, Martina ; Vilikus, Zdeněk (advisor) ; Majorová, Simona (referee)
Title: Comparison of two analysers of respiratory gases by paired examination of the same persons. Resource: The basic assumption of laboratory measurements is precision of devices. The aim of this study was to determine if the values of spiroergometric parameters measured at the same load on the same subjects by two different devices are comparable. We compared the respiratory gas analyzer Kardiospirox (Junkalor, CR) and Oxycon Delta (Jaeger, Germany). Methods: We studied 11 subjects on both devices on the same day. The intensity and duration of load were chosen to be repeatable in the same quality after a short rest. We measured the basic spiroerometric parameters at rest, during exercise 20W, 50W, 100W and 150W for men and at rest, during exercise 20W, 40W, 80W and 120W for women, always at steady state. For statistical comparison method we used Student's paired T test. Results: Heart rate (HR), oxygen consumption (VO2.kg-1 ), ventilatory equivalent (VE/VO2), breathing frequency (DF), respiratory exchange ratio (RER) did not differ significantly. Pulmonary ventilation (VE) and expired carbon dioxide (VCO2.kg-1 ) were significantly different. The reason could be that the sensor for ventilation of Oxycon works with inhaled and exhaled air while Kardiospirox works with just exhaled air....
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