Table 3.
Variables Used and Equations to Estimate Basal Metabolic Rate (BMR), METy-minutes, METy-hours, and Kilocalories Expended in Various Activities.
| Activity | METya | BMRb (kcal·min−1) | Minutes | Hours | METy-minutes (METy × minutes) | METy-hours (METy × hours) | Estimated kilocaloriesc (METy × BMR × minutes) |
|---|---|---|---|---|---|---|---|
| Hopscotch | 6.5 | 0.948 | 15 | 0.25 | 97.5 | 1.63 | 92.4 |
| Computer for schoolwork | 1.5 | 0.948 | 60 | 1.00 | 90.0 | 1.50 | 85.3 |
| Soccer | 8.1 | 0.948 | 45 | 0.75 | 364.5 | 6.08 | 345.5 |
| Walking (3.0 mph) | 4.1 | 0.948 | 30 | 0.50 | 123.0 | 2.05 | 116.6 |
| Watching TV | 1.3 | 0.948 | 30 | 0.50 | 39.0 | 0.65 | 37.0 |
| Total | 180 | 3.00 | 714.0 | 11.91 | 676.8 |
a
METy is listed for ages 10–12, taken from the Youth Compendium of Physical Activities
b
This example is for a 12-year old boy with a body mass of 40 kg. BMR is estimated from the Schofield et al. equation for 10–18 year old boys. Hence, BMR is predicted as follows: [17.686 × 40 kg + 658.2]/1440 = 0.948 kcal·min−1.
c
Kilocalories = METy × BMR (kcal·min−1) × Minutes