The metabolic equivalent of task (MET), or simply metabolic equivalent, is a physiological concept expressing the energy cost of physical activities as multiples of resting metabolic rate (RMR) and is defined as the ratio of metabolic rate (and therefore the rate of energy consumption) during a specific physical activity to a reference rate of metabolic rate at rest, set by convention to 3.5 ml O<sub>2</sup>·kg<sup>-1</sup>·min<sup>-1</sup> or equivalently 1 kcal·kg<sup>-1</sup>· h<sup>-1</sup> or 4.184 kJ·kg<sup>-1</sup>· h<sup>-1</sup>. By convention 1 MET is considered as the resting metabolic rate obtained during quiet sitting. MET values of physical activities range from 0.9 (sleeping) to 18 (running at 17.5 km/h or a 5:31 mile pace).
Although the RMR of any specific person may deviate significantly from the above mentioned conventional reference value. MET values of physical activities provide a rough indication of the intensity of physical activities such as manual labour or exercise. MET is actually an index... Read More