摘要：Winkle JM, Evans BW, Dilg P, Galparoli S. Comparing a Portable and Standard Metabolic Measuring System during Rest and Exercise. JEPonline 2011;14(2):80-87. The usefulness of a portable metabolic measuring system is dependent upon its ability to produce valid and reliable results when compared to standard laboratory equipment such as non-portable metabolic measuring systems. Results from studies comparing the VO2000 with non-portable systems have been inconsistent. The purpose of this study was to compare the metabolic and ventilatory values during exercise using a portable metabolic measuring system (VO2000) with a facemask (FM) and mouthpiece/ nose clip (MP) and a standard laboratory metabolic measuring system, CPX-Ultima (CPX/U). Eighteen volunteers (age = 25.7 ± 7.2 yrs) completed three 20 min exercise sessions (10 min walking/10 min jogging) using the CPX/U, FM, and MP. A counter-balanced design determined treatment order. Metabolic and ventilatory values were recorded at 20 sec intervals and averaged over the last 5 min of walking and jogging. A one-way ANOVA with repeated measures compared the mean values for each variable for the three conditions during walking and jogging. No significant difference (p > 0.05) in HR or VO2 was found due to treatment order. The VO2000 produced similar metabolic and ventilatory values whether using the FM or MP (p > 0.05). However, significant differences (p < 0.01) were found for VE, VO2, VCO2, and RER among the CPX/U, FM and MP during walking and jogging. The VO2000 overestimated VO2 compared to the CPX/U by 2.4 mL . kg-1.min-1 during walking and 6.9 mL . kg-1.min-1 during jogging.
关键词：Oxygen Uptake;Portable Metabolic Measuring System
