Stress test and MET
The Metabolic Equivalent of Task (MET), or simply metabolic equivalent, is a physiological measure expressing the energy cost of physical activities and is defined as the ratio of metabolic rate (and therefore the rate of energy consumption) during a specific physical activity to a reference metabolic rate, set by convention to 3.5 ml O2·kg−1·min−1 or approximately:
| Physical activity | MET |
|---|---|
| Light intensity activities | < 3 |
| sleeping | 0.9 |
| watching television | 1.0 |
| writing, desk work, typing | 1.5 |
| walking, 1.7 mph (2.7 km/h), level ground, strolling, very slow | 2.3 |
| walking, 2.5 mph (4 km/h) | 2.9 |
| Moderate intensity activities | 3 to 6 |
| bicycling, stationary, 50 watts, very light effort | 3.0 |
| walking 3.0 mph (4.8 km/h) | 3.3 |
| calisthenics, home exercise, light or moderate effort, general | 3.5 |
| walking 3.4 mph (5.5 km/h) | 3.6 |
| bicycling, <10 mph (16 km/h), leisure, to work or for pleasure | 4.0 |
| bicycling, stationary, 100 watts, light effort | 5.5 |
| sexual activity | 5.8[10] |
| Vigorous intensity activities | > 6 |
| jogging, general | 7.0 |
| calisthenics (e.g. pushups, situps, pullups, jumping jacks), heavy, vigorous effort | 8.0 |
| running jogging, in place | 8.0 |
| rope jumping | 10.0 |