%0 Journal Article
%T Comparison of Conventional and Individualized 1-MET Values for Expressing Maximum Aerobic Metabolic Rate and Habitual Activity Related Energy Expenditure
%J Nutrients | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/nu11020458
%X The maximum aerobic metabolic rate can be expressed in multiple metabolically equivalent tasks (MET), i.e., METmax. The purpose was to quantify the error when the conventional (3.5 mL£¿kg £¿1£¿min £¿1) compared to an individualized 1-MET-value is used for calculating METmax and estimating activity energy expenditure (AEE) in endurance-trained athletes (END) and active healthy controls (CON). The resting metabolic rate (RMR, indirect calorimetry) and aerobic metabolic capacity (spiroergometry) were assessed in 52 END (46% male, 27.9 ¡À 5.7 years) and 53 CON (45% male, 27.3 ¡À 4.6 years). METmax was calculated as the ratio of VO 2max over VO 2 during RMR (METmax_ind), and VO 2max over the conventional 1-MET-value (METmax_fix). AEE was estimated by multiplying published MET values with the individual and conventional 1-MET-values. Dependent t-tests were used to compare the different modes for calculating METmax and AEE (¦Á = 0.05). In women and men CON, men END METmax_fix was significantly higher than METmax_ind ( p < 0.01), whereas, in women END, no difference was found ( p > 0.05). The conventional 1-MET-value significantly underestimated AEE in men and women CON, and men END ( p < 0.05), but not in women END ( p > 0.05). The conventional 1-MET-value appears inappropriate for determining the aerobic metabolic capacity and AEE in active and endurance-trained persons. View Full-Tex
%U https://www.mdpi.com/2072-6643/11/2/458